A process for preparing powdered dispersants comprising at least 90% by weight of at least one copolymer CP of the polycarboxylate ether type. The powdered dispersants can be easily dispersed in water. The invention also relates to the use of such powdered dispersants in mineral binder compositions, in particular dry mortars, concrete or gypsum formulations.

A process for preparing powdered dispersants comprising at least 90% by weight of at least one copolymer CP of the polycarboxylate ether type. The powdered dispersants can be easily dispersed in water. The invention also relates to the use of such powdered dispersants in mineral binder compositions, in particular dry mortars, concrete or gypsum formulations.

A high-silica-containing supplemental cementitious materials, and a method of producing same. This material undergoes a pozzolanic reaction during hydration in a mixture of Ordinary Portland Cement (OPC) or lime.

A high-silica-containing supplemental cementitious materials, and a method of producing same. This material undergoes a pozzolanic reaction during hydration in a mixture of Ordinary Portland Cement (OPC) or lime.

Various embodiments disclosed relate to compatibilized resin-cement composite compositions and methods of using the same. In various embodiments, the present invention provides a method of treating a subterranean formation that includes placing in the subterranean formation a resin-cement composite composition. The resin-cement composite composition includes a resin, a cement, and a substituted or unsubstituted poly(alkylamine) compatibilizer.

Various embodiments disclosed relate to compatibilized resin-cement composite compositions and methods of using the same. In various embodiments, the present invention provides a method of treating a subterranean formation that includes placing in the subterranean formation a resin-cement composite composition. The resin-cement composite composition includes a resin, a cement, and a substituted or unsubstituted poly(alkylamine) compatibilizer.

Fresh concrete which contains in 1 m3 50 to 300 kg of water, 135 to 400 kg of cement or 135 to 600 kg of a mixture of cement and at least one substituent thereof, 10 to 150 kg of finely ground brick, ceramic, mixed or concrete recyclate having a particle size of 5 to 250 microns and a specific surface of 300 to 1500 m2/kg or 10 to 150 kg of a mixture of finely ground brick, ceramic, mixed or concrete recyclate having a particle size of 5 to 250 microns and a specific surface of 300 to 1500 m2/kg and microsilica and/or at least one substituent thereof, with a content of finely ground recyclate in this combination of at least 10% by weight, and 1000 to 2300 kg of aggregate.

Fresh concrete which contains in 1 m3 50 to 300 kg of water, 135 to 400 kg of cement or 135 to 600 kg of a mixture of cement and at least one substituent thereof, 10 to 150 kg of finely ground brick, ceramic, mixed or concrete recyclate having a particle size of 5 to 250 microns and a specific surface of 300 to 1500 m2/kg or 10 to 150 kg of a mixture of finely ground brick, ceramic, mixed or concrete recyclate having a particle size of 5 to 250 microns and a specific surface of 300 to 1500 m2/kg and microsilica and/or at least one substituent thereof, with a content of finely ground recyclate in this combination of at least 10% by weight, and 1000 to 2300 kg of aggregate.

The present disclosure relates to the building industry and in particular to a block for use in automated building construction. In one aspect, the block comprises a generally cuboid body having a top and a base, a length extending between a pair of opposed ends, and a width extending between a pair of opposed sides; the body including a plurality of hollow cores extending from said top to said base, and arranged in a row between said opposed ends; wherein each core has a rectilinear cross-sectional shape; and wherein the thickness of the block between each pair of adjacent cores is at least double the thickness of the block on all other sides of each core, so that the block is divisible into a plurality of substantially identical block portions, each portion including four walls of substantially uniform wall thickness about its core.

A cementitious blend composition and a concrete mix composition preferable for making concrete resistant to high temperatures and alkaline conditions, particularly for making durable concrete for constructing an alumina digester tank in an aluminum smelter. The cementitious blend composition includes at least one hydraulic cement, silica fume (SF), and natural pozzolan (NP), wherein a weight percent ratio of at least one hydraulic cement:SF:NP in the cementitious blend composition lies in the range of (24-63):(5-44):(32-40) with the sum of the weight percentages of the at least one hydraulic cement, the SF, and the NP not exceeding 100%. The concrete mix composition comprises water and the cementitious blend composition, wherein a weight ratio of the water to the cementitious blend composition is 0.2-0.5, and wherein the concrete mix composition has a content of the cementitious blend composition of 400-550 kg/m.sup.3.