Patent
Hydraulic binders and building elements formed of non-traditional materials
TLDR
In this article, a process for the formation of hydraulic binders and building elements comprising from 70% ettringite and up to 30% calcium silicate hydrates is disclosed.Abstract:
HYDRAULIC BINDERS AND BUILDING ELEMENTS FORMED OF NON-TRADITIONAL MATERIALS A process is disclosed for the formation of hydraulic binders and building elements comprising from 70% ettringite and up to 30% calcium silicate hydrates. Ettringite is a very strong mineral and the product may be at least the equal in terms of mechanical properties of Portland cement while not suffering shrinkage and expansion problems. The process comprises mixing powdered source materials of reactive CaSO4, CaO and Al2O3 with or without SiO3 with or without SiO2 and hydrating the intimate mixture at a ratio in the range of 1 part powdered source materials to 0.35-1 part water. Most conveniently, impure source material such as industrial by-products are used as they have been found to catalyse the hydration reaction. Further if gypsum is a powdered source material, in a natural, pure or chemical form, it is preferably calcined since such material sets quickly and gives early mechanical strength. A clinker of calcium sulphoaluminate may be produced for use as a powdered source material.read more
Citations
More filters
Patent
Structural sheathing panels
TL;DR: A reinforced, lightweight, dimensionally stable panel capable of resisting shear loads when fastened to framing equal to or exceeding shear load provided by plywood or oriented strand board panels is presented in this paper, where the panels employ a core of a continuous phase resulting from the curing of an aqueous mixture of calcium sulfate alpha hemihydrate, hydraulic cement, an active pozzolan and lime.
Patent
Gypsum-cement system for construction materials
TL;DR: In this paper, the volume ratio of the aggregate to the combined calcium sulfate, Portland cement, pozzolanic material, and lime (a cementitious binder) is equal to or greater than 2/1.
Patent
Very early setting ultra high early strength cement.
TL;DR: In this paper, the average amount of C4A3S^B7 was determined and a final mixture was formed utilizing the high C4S^¨B7 clinker, C containing hydraulic or portland type cement and soluble CS^´B7 anhydride to produce a final cement mixture having a C4B7 content of approximately 10 % to 30 % by weight.
Patent
Cementitious composition and making concrete therefrom
TL;DR: A cementitious composition comprises a ground sulfoaluminous clinker, a ground Portland cement clinker (preferably rapid hardening Portland Cement clinker), calcium sulfate, aggregate (especially sand and a coarse aggregate such as granite) and metal fibers as mentioned in this paper.
Patent
Anti-osteopontin antibody and use thereof
Toshimitsu Uede,Shigeyuki Kon,Yukihiko Saeki,Yasuyuki Yokosaki,Masaki Noda,Nobuchika Yamamoto +5 more
TL;DR: In this paper, an anti-osteopontin antibody is proposed to inhibit the biding of an integrin to osteopontins or its fragment which inhibits the binding of the integrin recognizing RGD sequence to osteopsontin or its fragments and recognizes SVVYGLR sequence or a sequence equivalent thereto.
References
More filters
Patent
Settable cementitious compositions
TL;DR: In the pump packing method of stowing cavities in underground mines, an aqueous slurry of the mineral composition is mixed with a second slurry containing calcium sulfate, lime and, preferably, bentonite, an alkali metal sulfate and a setting and/or hardening accelerator.
Patent
Cementious filling material - contg. Portland cement, plaster, limestone and resin
TL;DR: In use the matl. is made up with water to a fluid consistency as mentioned in this paper, and the material comprises cement, plaster and/or anhydrite, limestone flour and or chalk, quartz flour or sand; the cement being present in 20-50% by wt.
Patent
Fire resistant mouldings or panels with high strength - made from mixt. of gypsum and calcium aluminate
TL;DR: Gypsum molding material contains 60-97 pts. powder gypsum, 3-40 pts. calcium aluminate powder, and 0-20 pts. cement powder as discussed by the authors.
Patent
Cement expanding agent
Tsutomu Mizunuma,Yoshizo Ono +1 more
TL;DR: A calcium sulfoaluminate series Cement Expanding Agent with a specific particle size distribution is proposed in this article, which is not influenced by the variation of curing condition and can develop a high expandability in the concrete.