Abstract:
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.
Abstract:
A concrete wall forming system including a plurality of mold units for forming a wall of concrete. The mold units include a bond beam form extending into the body lengthwise, defined by a first wall, a second wall, a bond beam form bottom, a first end and a second end where the first wall and second wall extend a depth defined by a portion of the distance from the top surface to the bottom surface and where the bond beam form does not touch the first side or the second side. First and second ledges extend lengthwise along the body from the first and second sides respectively to the first and second walls respectively of the bond beam form. The bond beam form bottom extends from the first wall to the second wall. At least two column forms extend from the bond beam form bottom to a bottom surface.
Abstract:
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.
Abstract:
A method for improving the resistance of fumigant sorption in a produce container made of expandable polystyrene particles in a fumigation process, and related produce container. Expandable polystyrene particles having a density ranging from 40.0 to 32.0 pounds per cubic foot and a blowing agent amount ranging from 2.5 to 7.5 weight percent are pre-expanded to form pre-expanded particles having a core bulk density ranging from 12.5 to 2.0 pounds per cubic foot, and a skin density ranging between 40.0 and 32.0 pounds per cubic foot and a thickness ranging from 0.1 to 2 microns. These pre-expanded particles are injected into a mold to form a produce container having a wall thickness ranging from 0.25 to 2.0 inches.
Abstract:
A mold assembly for forming a container made of expandable hermoplastic particles, e.g. expandable polystyrene particles, comprises an inner mold and an outer mold, which when assembled form a mold cavity for receiving the thermoplastic particles. Steam and cooling fluid are supplied to passageways in the inner mold and outer mold. Temperature sensing devices, e.g. thermocouples, permanently mounted to the inside wall of the inner mold and to the outside wall of the outer mold, detect the temperature of the mold assembly. Pressure transducers in communication with the steam and cooling fluid being supplied into the passageways detect the pressure of the steam and water supplied to the passageways. These devices are continuously operative throughout the supply of steam and cooling fluid in the molding cycle to adjust the pressure and/or cycle time of the steam and to adjust the cycle time of the cooling fluid to optimally fuse together and cool the particles in the mold assembly.
Abstract:
A concrete wall forming system including interconnected mold units that include a top surface containing a first portion bond beam form, a first top ledge, a first top lip seal portion, a second top ledge, and a second top lip seal portion; a bottom surface containing a second portion bond beam form, a first bottom ledge, a first bottom lip seal portion, a second bottom ledge, and a second bottom lip seal portion; and two or more column forms extending from the top depression to the bottom depression. The first top lip seal portion and first bottom lip seal portion and second top lip seal portion and second bottom lip seal portion are adapted to form a seal between two mold units such that the bond beam form portions are combined to form a bond beam form. The system can be used to form an insulated concrete wall.
Abstract:
A labeled expanded resin container that includes pre-expanded resin beads molded in a shape having a sidewall with an outer surface and a base; and a label formed from a label material capable of maintaining an electrostatic charge disposed over at least a portion of the outer surface of the sidewall of the container. The container has a rim strength that is at least 50% greater than the rim strength of a container that does not contain a label, where the containers are otherwise made using the same equipment. After a liquid at 50°F (10°C) is placed in the container and the container is exposed to conditions of 86°F (30°C) and 60% relative humidity for 30 minutes, less than 2 ml of moisture condenses on the outer surface of the container.
Abstract:
A lightweight cementitious composition comprising 22 to 90 volume percent of a cement composition and from 10 to 78 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, where after the lightweight cementitious composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39. The cementitious composition can be used to make concrete masonry units, construction panels, road beds, and other articles can be included as a layer on wall panels and floor panels and can be used in insulated concrete forms. Aspects of the lightweight cementitious composition can be used to make lightweight structural units such as those shown in Figure 7 with lightweight concrete 550 in relation to embedded metal studs 514.
Abstract translation:一种轻质水泥组合物,其包含22至90体积%的水泥组合物和10至78体积%的平均粒径为0.2mm至8mm的颗粒,堆积密度为0.03g / cc至0.64g / cc ,纵横比为1至3,其中在轻质水泥组合物设定后,其具有至少1700psi的压缩强度,如根据ASTM C39测试的。 水泥组合物可用于制造混凝土砌块单元,建筑面板,路床和其他物品作为墙板和地板板上的一层,可用于绝缘混凝土形式。 轻质水泥组合物的方面可用于制造轻质结构单元,例如图7所示的轻型结构单元,其中轻质混凝土550相对于嵌入金属螺柱514。
Abstract:
A method of making a cementitious composition that includes combining cement, water and optionally aggregates and optionally additives to form an aqueous cement slurry; adding expanded polymer particles to the aqueous cement slurry; and forming a dispersion of expanded polymer particles in the aqueous cement slurry. The expanded polymer particles have an average particle diameter of from 200 μm to 5,000 μm, a bulk density of from 0.02 g/cc to 0.64 g/cc, and an aspect ratio of from 1 to 3.
Abstract:
A concrete wall forming system including interconnected mold units that include a top surface containing a first portion bond beam form, a first top ledge, a first top lip seal portion, a second top ledge, and a second top lip seal portion; a bottom surface containing a second portion bond beam form, a first bottom ledge, a first bottom lip seal portion, a second bottom ledge, and a second bottom lip seal portion; and two or more column forms extending from the top depression to the bottom depression. The first top lip seal portion and first bottom lip seal portion and second top lip seal portion and second bottom lip seal portion are adapted to form a seal between two mold units such that the bond beam form portions are combined to form a bond beam form. The system can be used to form an insulated concrete wall.