A flowable composition. The composition may consist of fly ash, filler, water, and air. The fly ash may be Class C fly and/or Class F fly ash. The filler may be sand. The composition may have a set time of less than 1 hour. The composition may have a compressive strength of between 10 psi and 100 psi after 4 hours. The composition may have a compressive strength of between 50 and 1200 psi at 28 days.

A cementitious material made from industry accepted precursor materials that will adhere to existing concrete or rock has several exploitable features beyond adhesion. The primary motivation for the invention was a self-adhering thin overlay of quality better or equal to the parent concrete floors is now possible. Structural repair of concrete is possible. There are a range of compositions and exploitable features than can be used to give the product flexibility across many concrete repair applications. This resulting material can demonstrate the low permeability and high strength closer to natural stone materials such as quartz and dolomite rocks than to concrete but intermediate compositions are technically viable as well. The material can be used for high quality precasts.

Cementitious mixtures, compositions for use in cementitious mixtures, and methods of producing cementitious mixtures wherein the compositions are suitable for modifying or improving certain properties of the cementitious mixtures. The compositions include a superabsorbent polymer (SAP) hydrogel having a macromolecular network structure, and at least one pozzolanic material that is chemically incorporated into the macromolecular network structure of the SAP hydrogel.

Provided are cementitious mixtures and processes for reinforcing a cementitious matrix. In one form of the process for reinforcing a cementitious matrix includes the steps of mixing a mineral cement and one or more populations of synthetic copolymer microfibers including about 1 mol. % to about 25 mol. % and from about 75 mol. % to about 99.5 mol. % of propylene monomeric units.

An admixture for mineral binder compositions, in particular an after-treatment agent for mineral binder compositions, including at least one water-absorbing substance and at least one shrinkage reducer.

Cementitious mixtures, compositions for use in cementitious mixtures, and methods of producing cementitious mixtures wherein the compositions are suitable for modifying or improving certain properties of the cementitious mixtures. The compositions include a superabsorbent polymer (SAP) hydrogel having a macromolecular network structure, and at least one pozzolanic material that is chemically incorporated into the macromolecular network structure of the SAP hydrogel.

A concrete composition is obtained by dry mixing cement and an aggregate, adding thereto a water dispersion which is preformed by dispersing a low substituted hydroxypropyl cellulose having a hydroxypropoxy substitution of 5-16 wt % in the form of fibrous particles having an aspect ratio of 4-7 in water, and mixing the ingredients. Because of reduced drying shrinkage, only a little drop of fluidity, and proper flow, the concrete composition is useful to form concrete buildings having frost damage resistance.

A repair compound for use in all applications and particularly well-suited for large hole repair. The repair compound includes a latex resin, a thickener, fibers, and a filler material. In some embodiments, the repair compound is configured to exhibit pseudoplastic-type behavior. In some embodiments, the repair compound has a density of not greater than 4.0 lbs/gal. In some embodiments, the repair compound includes hydrophobic and hydrophilic fibers of different morphologies. In some embodiments, the repair compound includes HASE-type thickeners. In some embodiments, the repair compound includes a bimodal distribution of hollow glass microspheres from two different strength/size curves.

A blended cementitious mixture is disclosed, the blended cementitious mixture comprising: a cement included in an amount corresponding to greater than 3% and less than 40% by mass of powders in the cementitious mixture; supplemental cementitious materials included in an amount corresponding to greater than 50% and less than 90% by mass of powders in the cementitious mixture and a carbonate source included in an amount less than or equal to 20% by mass of powders in the cementitious mixture. The cementitious mixture can be mixed with concrete sand, water, chemical admixtures and coarse aggregates and cured to form concrete.

A concrete composition is obtained by dry mixing cement and an aggregate, adding thereto a water dispersion which is preformed by dispersing a low substituted hydroxypropyl cellulose having a hydroxypropoxy substitution of 5-16 wt % in the form of fibrous particles having an aspect ratio of 4-7 in water, and mixing the ingredients. Because of reduced drying shrinkage, only a little drop of fluidity, and proper flow, the concrete composition is useful to form concrete buildings having frost damage resistance.