摘要:
A disclosed structural and light concrete includes a binding matrix and light aggregates. The binding matrix has a volume fraction from approximately 20% to approximately 50% of a concrete total volume and include: (1) a Portland Type I, II, III, IV or V cement or a mixture thereof, in a dose of at least 100 kg/m3 of concrete; (2) supplementary cementitious materials in a proportion of up to 4 times by volume of Portland cement; (3) a water component having a volume fraction relative to cement and supplementary cementitious materials in a range from approximately 0.2 to approximately 0.7; and (4) a maximum volume fraction of calcium hydroxide (CH) of approximately 10%. The light aggregates correspond to a volume fraction a range from approximately 30% to approximately 80% of the total concrete volume. Properties include increased compression resistance, decreased density, lower thermal conductivity and higher quotient of density resistance.
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:
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:
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:
A process for forming a dispersion of dicalcium phosphate in montmorillonite clay comprising mixing sodium montmorillonite with dicalcium phosphate and some water, and subjecting the mixture to dry heat.
摘要:
A mortar composition, in particular a leveling mortar composition, including: a) 10-50 wt. % of a hydraulic binder, b) 10-25 wt. % of lightweight aggregates, c) 30-50 wt. % of further aggregates which have a particle density that is higher than the particle density of the lightweight aggregates, d) 0.5-5 wt. % of a polymer.
摘要:
A concrete mix for producing freeze-thaw durable concrete having enhanced strength properties, like compressive strength, abrasion resistance, impact strength, toughness, is disclosed. The novel concrete mix contains deformable solid elements in place of 4-8% entrained air for good durability of concrete under freeze-thaw cycles.
摘要:
The present invention relates to a process for preparing, starting from a slag material, a filler for construction materials which contain bitumen or a hydraulic binding agent. The slag used to prepare the filler contains γ-dicalcium silicate. The process comprises the step of removing from the slag material a finer fraction formed by particles of a size between 0 and at least 0.75 mm so as to reduce the γ-dicalcium silicate content of the slag material; and the step of finely milling at least a portion of the remaining coarser fraction of the slag to obtain the filler. The invention also relates to the obtained filler, to the use thereof for preparing construction materials and to concrete or mortar compositions and asphalt compositions containing the filler. By removing the finer fraction from the slag material, a filler is obtained which has a considerably lower water content so that it becomes suitable for use in asphalt or concrete or mortar compositions, in particular in self-compacting concrete compositions.
摘要:
A method of manufacturing a luminescent tile for use in an aqueous environment includes admixing a luminescent pigment capable of being illuminated by an external light source, a forming material, and a catalyst to create a luminescent mixture. Casting the luminescent mixture into a mold and allowing said mixture to substantially harden thereby creating a luminescent tile. The forming material permits luminescence from the luminescent pigment upon excitation by an external light source, such as, a blacklight, while allowing the luminescent pigment to be safely used in an aqueous environment, such as a pool, spa, or the like.