An adduct of a polyetheramine and an epoxy-containing compound is used as an agent for reducing drying shrinkage and/or drying cracking in a mineral binder composition.

A method for making geopolymer cementitious binder compositions for cementitious products such as concrete, precast construction elements and panels, mortar and repair materials, and the like is disclosed. The geopolymer cementitious compositions of some embodiments are made by mixing a synergistic mixture of thermally activated aluminosilicate mineral, calcium aluminate cement, a calcium sulfate and a chemical activator with water

A method for making geopolymer cementitious binder compositions for cementitious products such as concrete, precast construction elements and panels, mortar, patching materials for road repairs and other repair materials, and the like is disclosed. The geopolymer cementitious compositions of some embodiments are made by mixing a synergistic mixture of thermally activated aluminosilicate mineral, calcium sulfoaluminate cement, a calcium sulfate and a chemical activator with water.

A method for making geopolymer cementitious binder compositions for cementitious products such as concrete, precast construction elements and panels, mortar, patching materials for road repairs and other repair materials, and the like is disclosed. The geopolymer cementitious compositions of some embodiments are made by mixing a synergistic mixture of thermally activated aluminosilicate mineral, calcium sulfoaluminate cement, a calcium sulfate and a chemical activator with water.

A method for making geopolymer cementitious binder compositions for cementitious products such as concrete, precast construction elements and panels, mortar and repair materials, and the like is disclosed. The geopolymer cementitious compositions of some embodiments are made by mixing a synergistic mixture of thermally activated aluminosilicate mineral, calcium aluminate cement, a calcium sulfate and a chemical activator with water.

A cement-based mixture comprises a polymeric fiber. The polymeric fiber may be obtained from a recycled vehicle tire. The cement-based mixture may comprise between 0.1% and 1.0% polymeric fiber by mass of cement. The cement-based mixture may comprise about 0.4% polymeric fiber by mass of cement. The cement-based mixture may be a mortar or a concrete. The polymeric fiber may be polyethylene-terephthalate.

A method for the control of the shrinkage of cementitious materials, the method comprising the steps of providing a cementitious material, adding aluminium powder to the cementitious material, adding calcium oxide or magnesium oxide to the cementitious material, and adding a shrinkage reducing agent which is an organic molecule to the cementitious material. Cementitious grouts including aluminium powder, calcium oxide or magnesium oxide, and a shrinkage reducing agent which is an organic molecule.

A method for forming concrete is disclosed. The method includes mixing recycled superabsorbent polymers (SAPs) with cement and aggregates. A method of forming recycled SAPs is also disclosed. The method includes neutralizing a mixture of SAP articles and a gel, purifying the mixture, and sieving the mixture into a powder. A concrete is also disclosed. The concrete includes recycled SAPs and cement. The concrete is formed by the methods of the present disclosure.