Abstract:
Fiber-reinforced compositions for forming concrete are disclosed. A fiber-reinforced dry-cast cementitious composition includes a cementitious component, aggregate, and at least one reinforcing component selected from the group consisting of metal fibers, synthetic fibers, and rubber pieces, A fiber-reinforced non-cementitious composition includes a pozzolanic component, aggregate, and at least one reinforcing component selected from the group consisting of metal fibers, synthetic fibers, and rubber pieces. The composition excludes any cementitious component. Fiber-reinforced concrete structures obtained by hardening the above-described compositions are also disclosed.
Abstract:
A method of expanding expandable polymeric microspheres including contacting an aqueous slurry including unexpanded, expandable polymeric microspheres with steam in-situ during manufacture of acementitious composition or article, wherein the aqueous slurry optionally further includes an admixture therefor. A method of manufacturing a cementitious composition or article includes: (i) contacting an aqueous slurry of unexpanded, expandable polymeric microspheres with steam proximate to and/or during said manufacturing of the cementitious composition to create expanded polymeric microspheres; (ii) pre-wetting the expanded polymeric microspheres; and (iii) mixing the pre-wetted, expanded polymeric microspheres with cement and water to form the cementitious composition, wherein the aqueous slurry optionally further comprises an admixture therefor.
Abstract:
Dry mix formulations containing a redispersible polymer powder (RDP) made of a low carboxylation, large particle size water-insoluble film‐forming styrene butadiene polymer having at least one ethylenically unsaturated dicarboxylic acid monomer, and a high alumina content cement such as a calcium aluminate cement (CAC) or a calcium sulfoaluminate cement (CSA) provides cement compositions having unexpectedly superior water immersion shear strength and set time for a cement containing tile adhesive (CBTA or CTA), superior adhesion properties in water proofing mortars or mortar applications, and superior flexural and compressive strength in grout applications.
Abstract:
Die vorliegende Erfindung betrifft ein Verfahren zur Beschleunigung der Erhärtung von hydraulischen oder latent-hydraulischen Bindemitteln, wobei dem Bindemittel Ternesit und eine Aluminiumkomponente zugesetzt werden, sowie ein frühfestigkeitssteigerndes Additiv für hydraulische oder latent-hydraulische Bindemittel enthaltend Ternesit und eine nicht hydraulisch reaktive Aluminiumkomponente und die Verwendung eines Additivs umfassend Ternesit und eine Aluminiumkomponente zur Beschleunigung der Erhärtung von hydraulischen oder latenthydraulischen Bindemitteln.
Abstract:
The subject of the present invention is a gypsum containing aqueous slurry containing a phosphate based polycondensate as sole agent with dispersing properties. With a phosphated polycondensate according to the invention as sole dispersing component an improved efficiency was found in comparison with the polycondensates known in the prior art. As additional favorable effect a significantly decreased retardation of the setting and hardening of the various construction compositions and especially of gypsum based slurries compared to other dispersants is to be observed, independently from the dosage of the dispersing component. This effect of the polycondensate component as well as an expedient influence on the pore structure surprisingly can be observed.
Abstract:
A lightweight concrete composition containing from 10 to 90 volume percent of a cement composition, from 10 to 90 volume percent of particles having an average particle diameter of from 0.2 mm to 8 mm, a bulk density of from 0.03 g/cc to 0.64 g/cc, an aspect ratio of from 1 to 3, and from 0 to 50 volume percent of aggregate; where the sum of components used does not exceed 100 volume percent, and where after the lightweight concrete composition is set it has a compressive strength of at least 1700 psi as tested according to ASTM C39 after seven days. The concrete composition can be used to make concrete masonry units, construction panels, road beds and other articles.
Abstract:
The present invention provides marble chips produced by hardening resin compositions containing binders and reactive monomers, wherein said binders contain halogenated alkoxylated diacrylate oligomers. The marble chips of the present invention can be formed into a uniform pattern, regardless of the time taken for hardening or molding. Therefore, an artificial marble using the marble chips of the present invention may have an outer appearance and texture the same as those of engineered stone, and also present thermoformability and workability characteristics which are advantages of an artificial acrylic marble.
Abstract:
The present invention provides an inorganic artificial marble having excellent impact strength and weather resistance. The inorganic artificial marble can be a substitute for natural stone and used as an exterior finishing material.