The present invention provides a storage stable silicon-containing powder composition suitable for use in dry mix compositions containing cement and filler suitable as cement-based tile adhesives, the powder composition comprising (i) a water redispersible polymer powder (RDP); and, (ii) a granular composition of (a) a silicate carrier, (b) a polydiorganosiloxane, (c) a hydrolysable silane containing a C.sub.4 to C.sub.12 alkyl group, or an oligomer thereof, and (d) a polymer encapsulant for the hydrolysable silane and the polydiorganosiloxane, wherein the weight ratio of the total RDP to the total weight of granular composition ranges from 90:10 to 98:2. The present invention provides methods of using dry mixes as cement-based tile adhesives wherein the powder composition enables good open time and excellent tensile adhesion, especially after heat aging.

A composition including: at least one waterbased polyurethane dispersion containing ethylene oxide units; at least one cement; and at least one mineral filler. The composition can be mixed and applied without coagulation of the polyurethane dispersion. Upon curing, it has a high strength and good adhesion properties, with surprisingly low shrinkage and most surprisingly good water impermeability properties. It is particularly suitable for the use as repair mortar, waterproofing mortar or screed mortar.

A mortar composition, in particular for preparing a viscoelastic structure and/or a fire barrier, including: a) 15-50 wt.-% of a hydraulic binder, b) 5-35 wt.-% of lightweight aggregates, c) 5-25 wt. % of further aggregates which have a particle density that is higher than the particle density of the lightweight aggregates, and d) 10-50 wt.-% of a polymer.

A waterproofing system including a functional layer S1 including 10-80 wt.-% of at least one thermoplastic polymer P1 and 10-80 wt.-% of at least one solid particulate filler F, wherein the surface of the functional layer S1 has an Auto-correlation length of waviness W(Sal) of at least 50 ?m. Further, a method for producing a waterproofing system and to the use of a mechanical surface treatment step to increase the waviness factor, determined as the ratio of the Root mean square roughness of waviness W(Sq) to the square of the Auto-correlation length of waviness W(Sal), of a surface of a functional layer S1.

Cementitious compositions and uses of such cementitious compositions especially as tile adhesive, the compositions including or consisting of a) a hydraulic binder itself including (in each case relative to the total dry weight of hydraulic binder) ai) 50-92 w %, preferably 70-77.55 w % of Ordinary Portland Cement, aii) 5-50 w %, preferably 21-30 w % of biomass ash, preferably bagasse ash, b) 0.01-0.5 w %, preferably 0.1-0.45 w % (relative to the total dry weight of the cementitious composition) of cellulose ether, c) optionally 0.05-2.5 w %, preferably 0.1-1 w % (relative to the total dry weight of the cementitious composition) of redispersible polymer powder, and d) optionally at least one activator selected from alkali metal or alkaline earth metal salts of hydroxide, formate, chloride, sulphate, and/or nitrate.

The present disclosure is directed to a gypsum panel and a method of making such gypsum panel. For instance, the gypsum panel comprises a gypsum core and a first facing material and a second facing material sandwiching the gypsum core, wherein the gypsum core includes gypsum and an acetate polymer. The acetate polymer is present in an amount of less than 1 wt. % based on the weight of the gypsum. The gypsum panel exhibits a nail pull resistance of at least about 70 lb.sub.f when tested in accordance with ASTM C1396-17. The method of the present disclosure is directed to making the aforementioned gypsum panel by providing the first facing material, providing a gypsum slurry comprising gypsum, water, and an acetate polymer onto the first facing material, wherein the acetate polymer is present in an amount of less than 1 wt. % based on the weight of the stucco, and providing a second facing material on the gypsum slurry. The gypsum panel exhibits a nail pull resistance of at least about 70 lb.sub.f when tested in accordance with ASTM C1396-17.

Disclosed is a composite waterproof structure comprising: an inorganic elastic undercoat layer including an inorganic material on a construction surface; a complementary reinforced fiber or chopped fiber layer in the form of a mesh in the middle of an inorganic undercoat body; a first intermediate coat layer disposed on the inorganic elastic undercoat layer; a mesh-type fiber-reinforcing sheet layer attached onto the first intermediate coat layer; first and second impregnated layers provided on the mesh-type fiber-reinforcing sheet layer; a second intermediate coat layer disposed on the first and second impregnated layers; a third intermediate coat layer provided on the second intermediate coat layer; and a first top coat layer.

A method for producing an additive manufactured object, the method comprising layering a composition for additive manufacturing comprising a water-curable inorganic composition and a heat-sensitive gelling agent, and non-fluidizing the composition for additive manufacturing by heating at the time of layering and/or after layering, wherein the heat-sensitive gelling agent contains an aqueous medium, a polymer dispersed in the aqueous medium, and a nonionic surfactant having a cloud point of 30 C. or higher and an HLB value of 10 to 18, and the heat-sensitive gelling agent is a heat-sensitive gelling agent having a value of al/a0 of 15 or more when a penetration resistance value at 173 C. immediately after defoaming is defined as a0 and a penetration resistance value at 173 C. after microwave heating at 600 W for 30 seconds after defoaming is defined as a1.

Portland cement-free binder formulations, methods of making, and use of such cement-free binder formulations in building materials. The Portland cement-free binder formulations of the invention at least include a geopolymer material, preferably slag, present in an amount from about 90-98 wt. % of the binder formulation, an activator agent in an amount greater than 0 wt. % to less than 10 wt. %, and a slag accelerating agent in an amount from greater than 0 wt. % to less than 10 wt. % of the binder formulation. The activator agent may be hydrated lime, while the slag accelerating agent may be calcium dihydroxide and a calcium salt. The binder formulations of the invention may be premixed hydrated lime activated geopolymer-based binders for addition with the one or more additional compounds to render a building material composition.