摘要:
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.
摘要:
The invention provides a process for the production of a cementious material. The process comprises mixing cement starting materials and a particulate healing agent to provide the cementious material. The healing agent comprises coated particles, wherein the coated particles comprise bacterial material and additive. The bacterial material is selected from the group consisting of a bacterium, a lyophilized bacterium and a bacterial spore of a bacterium. The present invention solves these problems, as (substantially leakage-proof) tablets containing the actual healing agent may neither interfere with either the workability of the liquid mixture (“cementious material”) nor negatively affect properties of either mixture or final material (hardened concrete), even when applied in large quantities. During crack formation in cementious based constructions, the particles also crack, and healing agent is released.
摘要:
A clay plaster formulation and application. The clay plaster is a mixture of various clays, and aggregate. This plaster is both functional and decorative and is for use on new and existing construction.
摘要:
The present invention provides resilient cement compositions and methods which are particularly useful in the construction and repair of oil and gas wells. The cement compositions have improved mechanical properties including elasticity and ductility.
摘要:
Disclosed are (1) osteogenic devices comprising a matrix containing substantially pure natural-sourced mammalian osteogenic protein; (2) DNA and amino acid sequences for novel polypeptide chains useful as subunits of dimeric osteogenic proteins; (3) vectors carrying sequences encoding these novel polypeptide chains and host cells transfected with these vectors; (4) methods of producing these polypeptide chains using recombinant DNA technology; (5) antibodies specific for these novel polypeptide chains; (6) osteogenic devices comprising these recombinantly produced proteins in association with an appropriate carrier matrix; and (7) methods of using the osteogenic devices to mimic the natural course of endochondral bone formation in mammals.
摘要:
Compositions containing nonfibrous calcium sulfate in hemi-hydrate or anhydrous form and fibrous additives, including paper fibers preferably derived from waste newspaper, capable of being formed into an unfaced building material having superior mechanical properties and/or fire resistance.
摘要:
Highly porous ceramic material for adsorption and absorption purposes, particularly for animal litter, characterized by a porosity of 50 to 300%, preferably 200 to 250%; a water absorption capacity of 50 to 200%, preferably 100 to 150%, a pH-value in the range 5 to 9, preferably 7 to 8; a bulk density of 400 to 700 g/1; an internal surface (BET-N.sub.2) between 20 and 200 m.sup.2 /g, preferably between 80 and 150 m.sup.2 /g; which can be produced by firing a foamed mixture of clay or clays, optionally aggregate or aggregates, anionic or cationic surfactant or surfactants and deflocculant or deflocculants, process for the production thereof and use thereof.
摘要:
Article made of conglomerate material comprising an aggregate comprising granules of expanded glass or expanded ceramic/clay and defining between them intergranular cavities, and a binder. The binder is present in the minimum quantity necessary for coating the expanded glass or expanded ceramic/clay granules, and the intergranular cavities contain only air and are free from filler material. Moreover, the binder is present in a volumetric quantity comprised between 6% and 12% of the total volume of the article.
摘要:
The pumpable aqueous concrete mixture has an air pore volume of 10-85 volume-%, that includes a hydrophobic resin at least partially soluble in the concrete mixture and optionally an aggregate material.
摘要:
The invention relates to a method for producing thermal energy storage components comprising phase change material embedded into porous components, in particular for use in cement-based compositions. The method comprises: an impregnation step (10) comprising introducing phase change material into porous components inside a main vessel (102) by vacuum impregnation; an injection step (12) at a temperature within a melting temperature range of said phase change material and under an overpressure, in order vacuuming to force the phase change material into the porous components; and an entrapment step (14) comprising reducing the temperature inside the main vessel, while maintaining an the overpressure, in order to lower the viscosity of said phase change material.