35 results about "Cementitious matrix" patented technology

A method of producing material from recycled glass comprising: preparing a mixture of glass in a cementitious matrix, and an alkali-silica reaction suppressant; providing a mold of the material and coating said mold with a release agent; casting said mixture into said mold; curing said mold; and removing the material from said mold. The recycled glass and concrete compositions are: 25-79% by weight glass; 8-35% by weight cement and up to 22% by weight of an alkali-silica reaction suppressant.

A structural fiber cement sheet containing cementitious matrix and reinforcing cellulose fibers distributed throughout the matrix having a dry density less than 1.25 g / cm3, a thickness less than 0.7500 in, and able to withstand uniform loads of 200 psf or greater according to test method of Section 6.4.2.4 of PS2 and with a deflection of less than 0.067 inches at 60 psf when spaced on a span of 24 inches or less on center.

A cementitious matrix in which the development of early strength is fast, the hydration heat temperature is small, and the amount of shrinkage during curing is small, while keeping the fluidity when concrete is fresh, is provided. The cementitious matrix is characterized by comprising 100 parts by weight of Portland cement, 5 to 30 parts by weight of silica fume, 5 to 25 parts by weight of limestone powder, 30 to 80 parts by weight of at least one of ground blast furnace slag or fly ash, at least one chemical admixture, water, and 70 to 150 parts by weight of aggregate having a largest aggregate diameter of 1.2 to 3.5 mm.

The present invention relates to a filamentary film construct which is used in providing cementitious mixtures supplemental and reinforcing strength upon setting, and more particularly, to a unitized filamentary construct which comprises a plurality of oriented reinforcing filamentary film components combined with a circumferential retaining element, said circumferential retaining element providing temporary retention of the oriented reinforcing filamentary components until such point the unitized filamentary substrate is incorporated and subjected to mechanical agitation during preparation of a cementitious blend or mixture. The unitized filamentary film construct is endowed with inherent and improved dispensability and dispersability of the associated reinforcing filamentary component into organic or inorganic cementitious matrixes, such as concrete, mortar, plaster, etc. The oriented reinforcing filamentary film components can comprise fibrillated film components.

The present invention relates to a material capable of trapping an inflammable gas, such as hydrogen, comprising at least one metal oxide in a cementitious matrix. The present invention also relates to the preparation of such a material and to its various uses.

The built-in cement-based material composite shrinkage measuring instrument relates to a cement-based material composite shrinkage measuring device. The invention solves the error caused by removing the formwork when the test piece is placed horizontally in the process of measuring the composite shrinkage of the existing cement-based material in the laboratory. And vertical placement measurement also needs to remove the formwork and generally use the bottom of the test mold as the measurement reference point to introduce large deviations in measurement data. The present invention includes metal molds, positioning plates, placement plates, measuring instruments, instrument columns, and instrumentation. There are two transparent L-shaped slots on the metal mold, the top column, the inner wall isolation layer and two matching test pieces. The positioning plate and the placement plate are respectively placed at the bottom of the two L-shaped slots. The instrument column It is fixedly connected with the placement plate and contacted with the positioning plate, the measuring instrument is fixedly connected on the instrument column, and two supporting test pieces are respectively placed on the upper surface of the piece to be tested. The invention is applicable to a composite shrinkage measuring device for cement-based materials.

A hydrophobic admixture, for cementitious materials such as cement paste, mortar, and concrete, includes solid polymer particles with a coating of hydrophobic agent and surfactant. The solid polymer particles adhere to exterior surfaces of hydrated cement particles in the cement matrix. The solid polymer particles deliver the hydrophobic agent into the cement matrix which is hydrophilic. The hydrophobic agents are distributed uniformly throughout the cement matrix. The solid polymer particles can be crumb rubber particles derived from waste rubber tires, recycled plastics and similar solid materials. The hydrophobic liquid agent is derived from waste lubricant oil, spent motor oil, base oil, esters of fatty acids, vegetable oil and the like. Fine particles such as activated carbon, silica fume and spent catalyst can be employed to fill the large pores or cracks that develop in the cementitious matrix. The cured cementitious materials exhibit high contact angles and high compressive strengths.