A three component composition consisting of a polyol component (A) including at least two polyols, one with high, one with low molecular weight and water, a polyisocyanate component (B) including a methylene diphenyl diisocyanate (MDI) product with an average NCO functionality of at least 2.5, or a methylene diphenyl diisocyanate (MDI) product with an average NCO functionality of at least 2 and at least one further polyol with an amount of between 1% and 30% based on the weight of the polyisocyanate component (B), wherein the MDI product and the polyol have reacted at least partially, and a powder component (C) including at least one hydraulic binder, preferably cement and/or calcined paper sludge, preferably a calcium compound selected from calcium hydroxide and/or calcium oxide, and optionally one or more aggregates.

A three component composition consisting of a polyol component (A) including at least two polyols, one with high, one with low molecular weight and water, a polyisocyanate component (B) including a methylene diphenyl diisocyanate (MDI) product with an average NCO functionality of at least 2.5, or a methylene diphenyl diisocyanate (MDI) product with an average NCO functionality of at least 2 and at least one further polyol with an amount of between 1% and 30% based on the weight of the polyisocyanate component (B), wherein the MDI product and the polyol have reacted at least partially, and a powder component (C) including at least one hydraulic binder, preferably cement and/or calcined paper sludge, preferably a calcium compound selected from calcium hydroxide and/or calcium oxide, and optionally one or more aggregates.

A mixture for a thermal insulating plaster, especially a mixture for a thermal insulating plaster that contains aqueous solution of silicate, which contains 78 to 90 volume percent of hollow glass microspheres, 5 to 17 volume percent of aqueous solution of potassium silicate, 0.1 volume percent of water-glass-binder stabilizer, 1.5 to 5 volume percent of styrene-acrylate dispersion, 0.4 to 3 volume percent of aqueous colloidal solution of silver, 0.2 to 2.4 volume percent of tensides as an aerating agent, and 0.5 to 7 volume percent of water.

A plaster treatment compound, in particular a compound for reinforcing waterproof plaster treatments containing water glass, which contains 20 to 69 wt % of an aqueous solution of potassium silicate, 20 to 59.9 wt % of aqueous lithium silicate solution, 10 to 20 wt % of octyltriethoxysilane, and 0.1 to 1 wt % water glass stabilizer.

Process for preparing a composition comprising a sulfonated lignin, including: preparing a lignin-containing aqueous suspension having a solids content up to about 45 wt % and a pH greater than about 6, by mixing a lignin with water; heating the aqueous suspension between about 65° C. and 160° C.; sulfonating the lignin using a sulfonating agent generating a sulfite ion and/or bisulfite ion, at a temperature of from about 90° C. to 160° C., at a sulfonation pH of from about 6 to 11 and at a molar ratio of sulfonating agent to lignin between about 0.1:1 and 1.5:1 on a sulfite to monomeric lignin sub-unit basis; and cooling the sulfonated lignin-containing resulting mixture. The sulfonated lignin, in aqueous mixture or as a powder, can be used as a dispersant in several products including for instance concrete, grout, mortar, oil-well cement, cement board, gypsum wallboard, agricultural products, drilling fluids, coal slurries.

Process for preparing a composition comprising a sulfonated lignin, including: preparing a lignin-containing aqueous suspension having a solids content up to about 45 wt % and a pH greater than about 6, by mixing a lignin with water; heating the aqueous suspension between about 65° C. and 160° C.; sulfonating the lignin using a sulfonating agent generating a sulfite ion and/or bisulfite ion, at a temperature of from about 90° C. to 160° C., at a sulfonation pH of from about 6 to 11 and at a molar ratio of sulfonating agent to lignin between about 0.1:1 and 1.5:1 on a sulfite to monomeric lignin sub-unit basis; and cooling the sulfonated lignin-containing resulting mixture. The sulfonated lignin, in aqueous mixture or as a powder, can be used as a dispersant in several products including for instance concrete, grout, mortar, oil-well cement, cement board, gypsum wallboard, agricultural products, drilling fluids, coal slurries.

Mineral binder compositions with accelerated setting and/or curing including a mineral binder, at least one free-radical initiator, and at least one catalyst for the at least one free-radical initiator. The mineral binder compositions accelerated setting and hardening and are especially useful for applications at low temperatures and even below 0° C.

A shotcrete composition comprising a) a cementitious binder; b) an ettringite formation controller comprising (i) a glyoxylic acid condensate and/or a glyoxylic acid adduct; and c) an alkali-free, aluminum-based shotcrete accelerator. The invention further relates to a process comprising providing a cementitious composition comprising a) a cementitious binder, and b) an ettringite formation controller comprising (i) a glyoxylic acid condensate and/or a glyoxylic acid adduct; admixing an alkali-free, aluminum-based shotcrete accelerator to the cementitious composition to obtain a shotcrete composition; and applying the shotcrete composition onto a surface to obtain a shotcrete structure and allowing the shotcrete structure to harden. The invention also relates to a hardened shotcrete structure obtained by this process.

A slag-based binder has at least one slag, optionally at least one CO.sub.3-containing mineral powder, optionally at least one co-binder different from the slag and mineral powder, at least one activator of the water/slag reaction, optionally at least one co-activator different from the one activator, at least one chelatant and/or at least one source of chelatant, said chelatant being preferably a scale inhibitor, and, optionally, at least one superplasticizer different from the chelatant. A kit is provided to make the binder. The binder is combined with an aggregate to make a dry concrete or mortar. A method for the preparation of a wet formulation (binder/water or concrete-mortar/water) is disclosed as is method of manufacturing buildings or civil engineering works or elements thereof, coatings, fillers, screeds, tiles, adhesives and/or internal or external insulation systems from the wet formulation. The binder is a substitute to OPC-based compositions and is environmentally friendly.

The invention relates to a method (100) for selecting the composition of a construction material including an excavated clay soil, said construction material composition to include deflocculating agent and activating agent quantities adapted to the excavated clay soil, said method including a step of receiving (130) a measured value of at least one physicochemical property of an excavated clay soil, and a step of selecting (170) a deflocculating agent quantity and an activating agent quantity adapted to the excavated clay soil. In addition, the invention also relates to a method (200) for calibrating a calculation algorithm for determining the composition of a site construction material, to a construction material formed from an excavated clay soil, and to a system (400) for preparing a construction material including an excavated clay soil.