A manufacturing method includes: (1) incorporating at least one soluble, calcium, magnesium, or other divalent cation-containing additive into a concrete mixture including aggregates prone to alkali-silica reaction; and (2) curing the concrete mixture to form a concrete product.

An admixture for cement based compositions, the admixture including a) an aqueous solution of polycarboxylate ether and b) at least one functionalized nanomaterial selected from carbon nanotubes functionalized by carboxyl groups and carbon nanofibers functionalized by carboxyl groups, wherein the at least one functionalized nanomaterial is dispersed in the aqueous solution. Low dosages of the admixture in cement based compositions result in significant enhancement of compressive strength.

An admixture for cement based compositions, the admixture including a) an aqueous solution of polycarboxylate ether and b) at least one functionalized nanomaterial selected from carbon nanotubes functionalized by carboxyl groups and carbon nanofibers functionalized by carboxyl groups, wherein the at least one functionalized nanomaterial is dispersed in the aqueous solution. Low dosages of the admixture in cement based compositions result in significant enhancement of compressive strength.

The present disclosure relates to a medical cement composition containing calcium silicate in an amount of less than 20 wt % of a total weight of the composition, with a lithium salt being added thereto. The medical cement composition of the present disclosure has a low compressive strength of 12 MPa or less, after being hardened, for easy removal, excellent stability in storage, and high bioactivity.

The present disclosure relates to a medical cement composition containing calcium silicate in an amount of less than 20 wt % of a total weight of the composition, with a lithium salt being added thereto. The medical cement composition of the present disclosure has a low compressive strength of 12 MPa or less, after being hardened, for easy removal, excellent stability in storage, and high bioactivity.

A manufacturing method includes: (1) incorporating at least one soluble, calcium, magnesium, or other divalent cation-containing additive into a concrete mixture including aggregates prone to alkali-silica reaction; and (2) curing the concrete mixture to form a concrete product.

A manufacturing method includes: (1) incorporating at least one soluble, calcium, magnesium, or other divalent cation-containing additive into a concrete mixture including aggregates prone to alkali-silica reaction; and (2) curing the concrete mixture to form a concrete product.

This present invention relates to compositions to improve concrete using biochemical-producing microbes and/or byproducts synthesized by the microbes. The invention also relates to methods for enhancing the performance of the concrete with said microbial strains and/or their byproducts.

This present invention relates to compositions to improve concrete using biochemical-producing microbes and/or byproducts synthesized by the microbes. The invention also relates to methods for enhancing the performance of the concrete with said microbial strains and/or their byproducts.

A composition for a cementitious roofing tile, the composition includes a cement binder making up 10% to 20% of a total composition weight; a fine aggregate sand making up 20% to 25% of the total composition weight; an aggregate making up 12% to 20% of the total composition weight; a crushed glass making up 15% to 60% of the total composition weight; an alkali-silica reaction (ASR) suppressant; and a predetermined volume of water; the aggregate is selected from one of perlite, vermiculite, hemp, expanded clay, coco coir, shale and slate; and the fine aggregate sand has an average particle size from a minimum of 1 micron to a maximum size of 2 mm; and the crushed glass has an average particle size that ranges from 1 micron to a maximum of 5 mm.