Patent application number | Description | Published |
20140127309 | ENCAPSULATED POLAR MATERIALS AND METHODS OF PREPARATION - The present invention meets one or more of the above needs and is a composition comprising plurality of capsules wherein the capsules comprise: a core of one or more highly polar liquids; one or more polar active materials dissolved in or dispersed in one or more highly polar liquids; a mixture of one or more polymers and one of more highly polar liquids; or a mixture of one or more polymers, one or more highly polar liquids and one or more polar active materials, and a shell comprising, particles in a polymer matrix or particles; wherein the thickness of the shell is sufficient to prevent passage of the highly polar liquid or the active material through the shell or to control the rate passage of the highly polar liquid or the active material through the shell with the proviso that the one or more polymers may be located in the core, in the polymer matrix of the shell or both. | 05-08-2014 |
20140350170 | POLYUREA MACROMER AND LATEXES THEREOF - The present invention is a composition comprising a) a stable aqueous dispersion of polymer particles having one or more structural units of i) a polyurea macromer; and ii) an acrylate, a methacrylate, a vinyl ester, or a styrene monomer, or a combination thereof; and/or b) an aqueous mixture of a i) polyurea macromer polymer particles; and b) acrylate, methacrylate, vinyl ester, or styrenic polymer particles, or a combination thereof, wherein the polyurea macromer is characterized by the following formula I: | 11-27-2014 |
20140350178 | POLYUREA MACROMER AND LATEXES THEREOF - The present invention is a composition comprising a) a stable aqueous dispersion of polymer particles having one or more structural units of i) a polyurea macromer; and ii) an acrylate, a methacrylate, a vinyl ester, or a styrene monomer, or a combination thereof; and/or b) an aqueous mixture of a i) polyurea macromer polymer particles; and b) acrylate, methacrylate, vinyl ester, or styrenic polymer particles, or a combination thereof, wherein the polyurea macromer is characterized by the following formula I: | 11-27-2014 |
20150231588 | MICROCAPSULES - Microcapsules including a shell and core structure are disclosed herein. In one aspect, the core includes at least one poly(allylamine). A process for producing such microcapsules is also disclosed herein. In another aspect, a curable epoxy resin composition includes a mixture of (a) at least one epoxy monomer compound and (b) a plurality of the disclosed microcapsules. Processes for producing the curable epoxy resin composition and a cured epoxy resin composite are also disclosed. | 08-20-2015 |
20150231589 | MICROCAPSULES - A process for adjusting the wettability property of a plurality of on-demand activation-type microcapsules of a core and shell structure including the steps of: (a) providing a plurality of microcapsules of a core and shell structure, wherein the shell includes a polymeric matrix containing a certain amount of unreacted functionalizable reactive electrophiles covalently bonded to the surface of the wall of the shell of the microcapsules; and (b) contacting the plurality of microcapsules of step (a) with a certain amount of nucleophiles; wherein the nucleophiles are adapted to react with the electrophiles; and wherein the nucleophiles are adapted to modify the wettability property of the microcapsules' shell structure to a predetermined degree of hydrophilicity or solvent compatibility. | 08-20-2015 |
20160068673 | POLYUREA MACROMER AND LATEXES THEREOF - The present invention is a composition comprising a) a stable aqueous dispersion of polymer particles having one or more structural units of i) a polyurea macromer; and ii) an acrylate, a methacrylate, a vinyl ester, or a styrene monomer, or a combination thereof; and/or b) an aqueous mixture of a i) polyurea macromer polymer particles; and b) acrylate, methacrylate, vinyl ester, or styrenic polymer particles, or a combination thereof, wherein the polyurea macromer is characterized by the following formula I: | 03-10-2016 |
Patent application number | Description | Published |
20080206007 | Slotting cutter and inserts for same - The present invention is directed to an insert, a slotting cutter assembly and a method for machining a plurality of slots in a metallic alloy part. The insert may comprise a cutting edge, at least one primary radius, at least two secondary radii and a clearance angle. The cutting edge may form a narrow outer end at a tip of the insert and a larger width region at a distance inward from the narrow outer end. The clearance angle may extend rearward from the cutting edge. The slotting cutter assembly may comprise a plurality of inserts and a cutter body. The cutter body may comprise a plurality of retaining slots and a plurality of support portions. The retaining slot may be configured to receive the insert. The support portion may provide support for the insert. | 08-28-2008 |
20100129165 | Ball nose end mill and insert - A cutting insert for a ball nose end mill includes a body including two opposed substantially flat retention surfaces. Each retention surface includes a chip control groove thereon extending from a point at or near an axial center of the body at an angle relative to the axial center of the body. The insert further includes a peripheral surface joining the two retention surfaces, wherein the peripheral surface includes a locating surface at a first end thereof and two arcuate surfaces at an opposed, second end thereof extending rearwardly from approximately the axial center of the second end and positioned on opposite sides of the insert symmetrically with respect to the centerline of the insert. The arcuate surfaces each including an arcuate cutting edge at the intersection of outer portion of a chip control groove and the arcuate surface. The arcuate surfaces are formed with a face clearance angle under the cutting edges. | 05-27-2010 |
20100232890 | CUTTING TOOL INCLUDING A CUTTING INSERT RETAINING AND ADJUSTING MECHANISM - A cutting tool includes a novel cutting insert retaining and adjusting mechanism. The cutting insert retaining and adjusting mechanism is associated with a recess in the cutting tool and includes a nest slidably mounted in the recess. The nest includes a cutting insert pocket. The cutting insert retaining and adjusting mechanism includes a first wedge adapted to selectively exert pressure on the nest to retain the nest in a desired position in the recess, and a second wedge adapted to selectively exert pressure on a cutting insert positioned in the cutting insert pocket to retain the cutting insert in a desired position. The mechanism further includes an adjustment screw including a first threaded portion and a second threaded portion. The first threaded portion is threadedly disposed in a threaded bore in the cutting tool body, and the second threaded portion is threadedly disposed in a threaded bore in the nest. The first threaded portion has the same handedness but a different thread pitch as the second threaded portion. Rotating the adjustment screw axially slidably advances and retracts the nest in the recess. | 09-16-2010 |
20130028679 | SLOTTING CUTTER AND INSERTS FOR SAME - The present invention is directed to an insert, a slotting cutter assembly and a method for machining a plurality of slots in a metallic alloy part. The insert may comprise a cutting edge, at least one primary radius, at least two secondary radii and a clearance angle. The cutting edge may form a narrow outer end at a tip of the insert and a larger width region at a distance inward from the narrow outer end. The clearance angle may extend rearward from the cutting edge. The slotting cutter assembly may comprise a plurality of inserts and a cutter body. The cutter body may comprise a plurality of retaining slots and a plurality of support portions. The retaining slot may be configured to receive the insert. The support portion may provide support for the insert. | 01-31-2013 |
20140271012 | RAIL RE-PROFILING METHOD AND APPARATUS - A method of milling a profile of a railway rail comprises: rotating a milling cutter including a plurality of face mounted cutting inserts mounted about a periphery thereof; milling a railway rail with cutting edges of the cutting inserts rotating in a predetermined plane corresponding to at least a portion of a desired rail profile while controlling the depth of cut of the cutting inserts; traversing the railway rail with the milling cutter while milling the railway rail; and controlling the speed of traverse of the milling cutter along the railway rail. | 09-18-2014 |
Patent application number | Description | Published |
20120079639 | CUT RESISTANT GARMENT - A cut resistant sweater is provided including a chest portion, sleeves, collar, and closure extending from the top edge of the collar through at least part of the chest portion. The closure includes an opening extending from the top of the collar through at least part of the chest portion, and a strip having a first part of a hook and loop fastener thereon. A second part of the hook and loop fastener is disposed on the sweater in at least two pieces, a piece adjacent to a first side of the opening and a piece adjacent to a second side of the opening. The closure is stiff relative to the collar to support the collar. A method for manufacturing the sweater includes providing a cut resistant yarn, and knitting it into a sweater in the order of cuff of first sleeve, first sleeve, body and collar, second sleeve, and cuff of the second sleeve. | 04-05-2012 |
20130000005 | PLAITED GLOVE - A cut resistant glove is provided having an inner surface and an outer surface wherein the inner surface is adapted for contacting a hand of a user, and the outer surface is visible while the user is wearing the glove. The glove includes a two layer knit fabric of a plaited construction including a first layer on the inner surface and a second layer on the outer surface. The outer surface is constructed from non-stretchable, cut resistant yarn, wherein the yarn has filaments that are generally parallel to one another and the inner surface is constructed from a stretchable, elastic yarn. | 01-03-2013 |
20150143620 | Cut Resistant Garment - A cut resistant sweater is provided including a chest portion, sleeves, collar, and closure extending from the top edge of the collar through at least part of the chest portion. The closure includes an opening extending from the top of the collar through at least part of the chest portion, and a strip having a first part of a hook and loop fastener thereon. A second part of the hook and loop fastener is disposed on the sweater in at least two pieces, a piece adjacent to a first side of the opening and a piece adjacent to a second side of the opening. The closure is stiff relative to the collar to support the collar. A method for manufacturing the sweater includes providing a cut resistant yarn, and knitting it into a sweater in the order of cuff of first sleeve, first sleeve, body and collar, second sleeve, and cuff of the second sleeve. | 05-28-2015 |
20150181955 | AMBIDEXTROUS, ANTI-VIBRATION GLOVE WITH IMPACT AND PINCH POINT PROTECTION - A glove for protecting a hand is provided including a flat, first side having a hand-shaped outer perimeter having a palm portion and finger portions, and a flat second side having the hand shaped outer perimeter having a palm portion and finger portions. The second side is a mirror image of the first side. Protuberances are disposed in a pattern on each of the first side and the second side of the glove where the patterns are mirror images of one another. The glove may be used on either a left hand or a right hand of a user. When in use, the protuberances on the one side provide impact protection to the back of the user's hand, and the protuberances on the other side provide vibration damping. | 07-02-2015 |
Patent application number | Description | Published |
20120079639 | CUT RESISTANT GARMENT - A cut resistant sweater is provided including a chest portion, sleeves, collar, and closure extending from the top edge of the collar through at least part of the chest portion. The closure includes an opening extending from the top of the collar through at least part of the chest portion, and a strip having a first part of a hook and loop fastener thereon. A second part of the hook and loop fastener is disposed on the sweater in at least two pieces, a piece adjacent to a first side of the opening and a piece adjacent to a second side of the opening. The closure is stiff relative to the collar to support the collar. A method for manufacturing the sweater includes providing a cut resistant yarn, and knitting it into a sweater in the order of cuff of first sleeve, first sleeve, body and collar, second sleeve, and cuff of the second sleeve. | 04-05-2012 |
20130000005 | PLAITED GLOVE - A cut resistant glove is provided having an inner surface and an outer surface wherein the inner surface is adapted for contacting a hand of a user, and the outer surface is visible while the user is wearing the glove. The glove includes a two layer knit fabric of a plaited construction including a first layer on the inner surface and a second layer on the outer surface. The outer surface is constructed from non-stretchable, cut resistant yarn, wherein the yarn has filaments that are generally parallel to one another and the inner surface is constructed from a stretchable, elastic yarn. | 01-03-2013 |
20150143620 | Cut Resistant Garment - A cut resistant sweater is provided including a chest portion, sleeves, collar, and closure extending from the top edge of the collar through at least part of the chest portion. The closure includes an opening extending from the top of the collar through at least part of the chest portion, and a strip having a first part of a hook and loop fastener thereon. A second part of the hook and loop fastener is disposed on the sweater in at least two pieces, a piece adjacent to a first side of the opening and a piece adjacent to a second side of the opening. The closure is stiff relative to the collar to support the collar. A method for manufacturing the sweater includes providing a cut resistant yarn, and knitting it into a sweater in the order of cuff of first sleeve, first sleeve, body and collar, second sleeve, and cuff of the second sleeve. | 05-28-2015 |
20150181955 | AMBIDEXTROUS, ANTI-VIBRATION GLOVE WITH IMPACT AND PINCH POINT PROTECTION - A glove for protecting a hand is provided including a flat, first side having a hand-shaped outer perimeter having a palm portion and finger portions, and a flat second side having the hand shaped outer perimeter having a palm portion and finger portions. The second side is a mirror image of the first side. Protuberances are disposed in a pattern on each of the first side and the second side of the glove where the patterns are mirror images of one another. The glove may be used on either a left hand or a right hand of a user. When in use, the protuberances on the one side provide impact protection to the back of the user's hand, and the protuberances on the other side provide vibration damping. | 07-02-2015 |
Patent application number | Description | Published |
20150120455 | METHODS AND SYSTEMS FOR DELIVERING ELECTRONIC CONTENT TO USERS IN POPULATION BASED GEOGRAPHIC ZONES - Systems and methods are disclosed for electronic distribution of electronic content. The method may include receiving, from an advertiser or content provider, a request to transmit electronic content to a plurality of electronic devices of a desired subset of individuals. The electronic content may relate to a target location affiliated with the advertiser or content provider. The method also may include retrieving population density data for the target location and surrounding area, and correlating the subset of individuals with the population density. In addition, the method also may identifying a geographical zone extending from the target location to a perimeter location. The zone may have a size based on the population density correlated with the subset of individuals. The method my further include receiving an indication that the electronic device of a user has entered the geographical zone, and transmitting electronic content to the electronic device of the user. | 04-30-2015 |
20150358766 | SYSTEMS AND METHODS FOR OPTIMIZING AND REFINING MESSAGE NOTIFICATION TIMING - Systems and methods are provided for determining release weights for geographic locations and specific times for selected users, and optimizing the timing of message notifications for a mobile device based on those release weights. The release weights may be determined based 1) generalized factors, 2) factors individualized for a particular mobile device user, and/or 3) real-time factors. These release weights are calculated to represent a user's likeliness to launch a client application from a message notification at a given time and geographic location. | 12-10-2015 |
20150371270 | METHODS AND SYSTEMS FOR EVALUATING THE DISPLAY OF ELECTRONIC CONTENT TO INDIVIDUALS IN GEOGRAPHIC ZONE HAVING INNER BOUNDARY - Systems and methods are disclosed for electronic distribution of electronic content. The method includes retrieving data indicating transmission of electronic content to a plurality of electronic devices within a geographical zone extending between an inner boundary extending around a target location and an outer boundary extending around the target location; receiving data indicating presence of one of the plurality of electronic devices in a target geographical zone, the target geographical zone being located within the inner boundary; determining a time difference between transmission of the electronic content to the one of the plurality of electronic devices and the one of the plurality of electronic devices' presence in the target geographical zone; and determining an electronic device conversion occurred when the time difference is less than a threshold period of time associated with the electronic content. | 12-24-2015 |
20160005077 | SYSTEMS AND METHODS FOR ENABLING ACCESS TO DIGITAL CONTENT BASED ON GEOGRAPHIC LOCATIONS VISITED BY MOBILE DEVICE USERS - Systems and methods are provided for enabling access to digital content based on geographic locations visited by mobile device users. One method includes receiving a promotion associated with premium digital content, access information, and one or more locations in which the premium digital content is accessible. The premium digital content includes restricted access content and the premium digital content is associated with open access content, determining one or more geo-fences based on the one or more locations, transmitting at least part of the promotion to one or more mobile devices, receiving a geographic location of the one or more mobile devices, determining whether the geographic location of the one or more mobile devices is within at least one of the one or more geo-fences, and transmitting, when the geographic location of the one or more mobile devices is determined to be within the one or more geo-fences, access information for the premium digital content to the one or more mobile devices within the one or more geo-fences. | 01-07-2016 |
Patent application number | Description | Published |
20080262285 | Method for removing phosphate from aqueous solutions - A method for removing phosphate ion from an aqueous solution containing phosphate ion using a resin loaded with a hydrous oxide of an amphoteric metal ion. The resin loaded with a hydrous oxide of an amphoteric metal ion is produced by combining a resin with at least two bed volumes of an aqueous solution containing a salt of the amphoteric metal ion, and having a metal ion concentration of at least 5%, and then treating with an aqueous alkali metal hydroxide solution. | 10-23-2008 |
20120000275 | DELIVERY DEVICE FOR DISPENSING PHARMACEUTICAL DOSAGE FORMS INTO DISSOLUTION TESTING APPARATUS - The present invention provides a dissolution test cell having a chamber and slide valve for dispensing pharmaceutical dosage forms, such as tablets, capsules, and powders, into the chamber without having to open the cell and expose the chamber and its contents to the ambient environment. The present invention also facilitates removal of a partially dissolved or non-disintegrating dosage form from the chamber and cell entirely, without exposing the interior of the cell and chamber. Dissolution test apparatus comprising at least one dissolution test cell in accordance with the invention is also provided, as well as methods for its operation to obtain Level A IVIVC dissolution results which accurately correlate with in vivo dissolution results are also provided. | 01-05-2012 |
20120034704 | DISSOLUTION TEST EQUIPMENT - Apparatus and method for dissolution testing of active substances in various dosage forms is provided. The apparatus has filtration cells equipped and configured to simulate bodily functions, operate continuously and facilitate testing various types of dosage forms including, but not limited to, tablets, capsules and those having non-disintegrating substrates. | 02-09-2012 |
Patent application number | Description | Published |
20140060069 | COMBUSTOR INCLUDING COMBUSTION NOZZLE AND AN ASSOCIATED METHOD THEREOF - A combustor including a combustion nozzle. The combustion nozzle includes a mixing section and an exit section. The mixing section includes an air inlet, and a fuel inlet. The exit section includes a plurality of jets on an exit surface. The combustor further includes a combustion zone, including a combustion liner, disposed downstream and in fluidic communication with the combustion nozzle. The combustor is configured wherein a, NOx emission of the combustor is related to 1/R, where R is a Reynolds number ratio of a jet of the plurality of jets to the combustion liner. A method for achieving NOx reduction in a combustion nozzle. | 03-06-2014 |
20140260278 | SYSTEM FOR TUNING A COMBUSTOR OF A GAS TURBINE - A system for tuning a combustor of a gas turbine includes a flow sleeve having an annular main body. The main body includes an upstream end, a downstream end, an inner surface and an outer surface. A cooling channel extends along the inner surface of the main body. The cooling channel extends at least partially between the downstream end and the upstream end of the main body. | 09-18-2014 |
20150135718 | COMBUSTOR AND METHOD FOR DISTRIBUTING FUEL IN THE COMBUSTOR - A combustor includes a tube bundle that extends radially across at least a portion of the combustor. The tube bundle includes an upstream surface axially separated from a downstream surface, and a plurality of tubes extend from the upstream surface through the downstream surface to provide fluid communication through the tube bundle. A barrier extends radially inside the tube bundle between the upstream and downstream surfaces, and a baffle extends axially inside the tube bundle between the upstream surface and the barrier. | 05-21-2015 |
20150159875 | FUEL INJECTOR WITH PREMIX PILOT NOZZLE - An apparatus for injecting premixed fuel and air through a center body and into the combustion zone of a gas turbine includes a fuel injector nozzle with a premix pilot nozzle having a plurality of premix passages in fluid communication with an air supply and a fuel supply that premixes air and fuel within the premix passages. The apparatus has either an active or passive fuel feed control. Fuel can be fed to the apparatus either conventionally or as a breech load circuit integrated into the oil cartridge. Fuel can be supplied passively via a fuel channel connecting the swozzle fuel plenum to the premix passages. Alternatively, fuel can be injected from the oil cartridge into the premix passages. | 06-11-2015 |
20150241064 | SYSTEM HAVING A COMBUSTOR CAP - A system includes a combustor cap assembly for a multi-tube fuel nozzle. The combustor cap assembly includes a support structure defining an interior volume configured to receive an air flow. The combustor cap assembly also includes multiple mixing tubes disposed within the interior volume, wherein each mixing tube is configured to mix air and fuel to form an air-fuel mixture. The combustor cap assembly further includes a combustor cap removably coupled to the support structure. The combustor cap includes multiple nozzles integrated within the combustor cap. Each nozzle of the multiple nozzles is coupled to a respective mixing tube of the multiple mixing tubes. The combustor cap is configured to internally cool itself via one or more cooling features integrated within the combustor cap. | 08-27-2015 |
20150241065 | COMBUSTOR CAP HAVING NON-ROUND OUTLETS FOR MIXING TUBES - A system includes a a combustor cap configured to be coupled to a plurality of mixing tubes of a multi-tube fuel nozzle, wherein each mixing tube of the plurality of mixing tubes is configured to mix air and fuel to form an air-fuel mixture. The combustor cap includes multiple nozzles integrated within the combustor cap. Each nozzle of the multiple nozzles is coupled to a respective mixing tube of the multiple mixing tubes. In addition, each nozzle of the multiple nozzles includes a first end and a second end. The first end is coupled to the respective mixing tube of the multiple mixing tubes. The second end defines a non-round outlet for the air-fuel mixture. Each nozzle of the multiple nozzles includes an inner surface having first and second portions, the first portion radially diverges along an axial direction from the first end to the second end, and the second portion radially converges along the axial direction from the first end to the second end. | 08-27-2015 |
20150253011 | ANNULAR PREMIXED PILOT IN FUEL NOZZLE - A combustor for a gas turbine engine has a head end portion that carries at least one fuel/air nozzle. Each fuel/air nozzle includes a premixed pilot nozzle having premix conduits where each premix conduit has an upstream end defining an opening and having a central axis and downstream end defining an outlet and having a central axis where the central axis of the downstream end is non-parallel with a central axis of a center body of the fuel/air nozzle. The premixed pilot nozzle can include an annular channel disposed radially outwardly from the premix conduits and may include air jets that direct air radially outwardly from the premix conduits. | 09-10-2015 |
Patent application number | Description | Published |
20080275149 | DURABLE CONCRETE COMPOSITIONS - Methods of controlling the durability of and/or the amount of air in concrete formulations that include combining cement, water, and optionally aggregates, admixtures and/or additives to form a cement mixture; and adding prepuff particles to the cement mixture to form a concrete formulation. The prepuff particles have an average particle diameter of from 0.2 mm to 3 mm, a bulk density of from 0.015 g/cc to 0.35 g/cc, an aspect ratio of from 1 to 3, and a smooth continuous outer surface. The cured and hardened concrete formulation typically has a relative dynamic modulus of at least 70% determined according to Procedure A of ASTM C666 (2003). The amount of air in the concrete typically increases over the amount of air in similar formulations not containing prepuff particles, as determined according to ASTM C231, based on the volume percent of prepuff. The concrete formulations can be used to make articles. | 11-06-2008 |
20090081446 | METHOD OF PLACING CONCRETE - A method of placing a concrete compositions including a) combining 3-40 volume percent cement, 5-50 volume percent fine aggregate, 5-50 volume percent coarse aggregate, and 10-22 volume percent water; b) adding 1.5-40 volume percent of prepuff particles to form a concrete composition; and c) pumping the concrete composition to a point higher in elevation than the delivery point of the concrete to place the concrete. The concrete composition contains less than 30 volume percent of other light weighting aggregates and the prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the placed concrete measured according to ASTM C 143 is greater than 1 inch and the concrete has a density of from about 40 to about 135 lb./ft | 03-26-2009 |
20100098524 | LIGHTWEIGHT CONCRETE COMPOSITIONS - A lightweight ready-mix concrete composition that contains 8-20 volume percent cement, 11-50 volume percent sand, 10-31 volume percent prepuff particles, 9-40 volume percent coarse aggregate, and 10-22 volume percent water, where the sum of components used does not exceed 100 volume percent;. The prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the composition measured according to ASTM C 143 is from 2 to 8 inches. After the lightweight ready-mix concrete composition is set for 28 days, it has a compressive strength of at least 1400 psi as tested according to ASTM C39. | 04-22-2010 |
20100273902 | DURABLE CONCRETE COMPOSITIONS - Methods of controlling the durability of and/or the amount of air in concrete formulations that include combining cement, water, and optionally aggregates, admixtures and/or additives to form a cement mixture; and adding prepuff particles to the cement mixture to form a concrete formulation. The prepuff particles have an average particle diameter of from 0.2 mm to 3 mm, a bulk density of from 0.015 g/cc to 0.35 g/cc, an aspect ratio of from 1 to 3, and a smooth continuous outer surface. The cured and hardened concrete formulation typically has a relative dynamic modulus of at least 70% determined according to Procedure A of ASTM C666 (2003). The amount of air in the concrete typically increases over the amount of air in similar formulations not containing prepuff particles, as determined according to ASTM C231, based on the volume percent of prepuff. The concrete formulations can be used to make articles. | 10-28-2010 |
20110003904 | Lightweight Concrete Compositions - A lightweight ready-mix concrete composition that contains 8-20 volume percent cement, 11-50 volume percent sand, 10-31 volume percent prepuff particles, 9-40 volume percent coarse aggregate, and 10-22 volume percent water, where the sum of components used does not exceed 100 volume percent;. The prepuff particles have an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.02 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3. The slump value of the composition measured according to ASTM C 143 is from 2 to 8 inches. After the lightweight ready-mix concrete composition is set for 28 days, it has a compressive strength of at least 1400 psi as tested according to ASTM C39. | 01-06-2011 |