摘要:
The present invention relates to a bio-aggregate based building product comprising a macroporous element formed from a mixture of: a calcium carbonate derived binder and a lignocellulosic bio-aggregate. The macroporous element has an air and/or vapour and/or water open matrix with a microcapillary structure formed by the lignocellulosic bio-aggregate. The porosity of the macroporous element is at least 50% of the bulk volume of the building product. Between 40% and 80% by weight of bio-aggregate granulates forming the lignocellulosic bio-aggregate have a maximum particle size falling within the lower 50% of the particle size range. No more than 5% by weight of bio-aggregate granulates forming the lignocellulosic bio-aggregate have a maximum particle size falling within the upper 20% of the particle size range.
摘要:
Aqueous compositions may be used preparing special concretes like aerated concrete or lightweight concrete. Such an aqueous composition for preparing such concretes, may combine water, a hydraulic binder, and an aggregate that is ground in the presence of a particular anionic polymer. The ground aggregate is selected from slag, fly ash, sand, and combinations thereof.
摘要:
The invention relates to a dry building material mixture, in particular a plastering mortar, the dry building material mixture comprising at least on aerogel.
摘要:
Construction materials intended for use as structural elements, such as structural blocks, used in the construction of buildings and civil engineering structures. The blocks can comprise hemp hurd and fibers, flax fiber, hydraulic lime and hydrated lime. In one aspect, the blocks may comprise a body shape configured so as to allow it to interlock with other blocks in the construction of a structure. Methods for manufacturing the blocks and structures comprising such materials and methods for building such structures are also disclosed.
摘要:
The primary object of the invention is to provide a sealing material and an injection method that make sure good effects on stopping water and good durability.The inventive sealing material comprises a mixture of Materials A and B, the Material A containing fine-particle silica produced by a process in which a slurry having metallic silicon powders dispersed in water is jetted into a flame for burning and oxidization and having an average particle diameter of 1.0 μm or less, a dispersant and water and being subjected to wet dispersion, and the Material B containing a calcium compound having an average particle diameter of 1.0 μm or less, a dispersant and water and being subjected to wet dispersion. The average particle diameter is measured using a leaser diffraction type particle size distribution analyzer without subjecting the silica and the calcium compound to ultrasonic dispersion. The fine-particle silica is fine-particle spherical silica having an average sphericity of 95% or more, and the calcium compound is calcium hydroxide. Preferably, the sealing material should further contain a hardening time regulator. Preferably, the Material A and/Material B should be produced by a pulverizer using high-pressure water.
摘要:
Subterranean fluids are provided that have improved environmental characteristics, and more particularly, subterranean fluids are provided that include a hydraulic cement in an invert emulsion. Methods of using such fluids in subterranean operations also are provided. An example of a method is a method of using a fluid in a subterranean formation. An example of a composition is a fluid comprising a hydraulic cement and an invert emulsion of an oleaginous fluid, a nonoleaginous fluid, and an emulsifying surfactant, wherein the emulsifying surfactant: has an LC50 or EC50 that is greater than about 10 milligrams/liter with respect to Skeletonema costatum, Acartia tonsa, Scopthalmus maximus (juvenile), or Corophium volutator; and demonstrates a biodegradability of: greater than about 70% biodegradation in 28 days when tested according to method OECD 301A or 301E; or greater than about 60% biodegradation in 28 days when tested according to method OECD 301B, 301C, 301F, or 306.
摘要翻译:提供具有改善的环境特性的地下流体,更具体地说,提供了包括反相乳液中的水硬性水泥的地下流体。 还提供了在地下操作中使用这种流体的方法。 方法的一个实例是在地层中使用流体的方法。 组合物的实例是包含水硬性水泥和油性流体,非油性流体和乳化表面活性剂的反相乳液的流体,其中所述乳化表面活性剂具有LC 50或EC 大于约10毫克/升,相对于骷髅毛癣菌,Ac a a,,,,,us(or or or;;;;;;;;;;;;;;;; 并证实了生物降解性:当根据方法OECD 301A或301E测试时,在28天内大于约70%的生物降解; 或在根据方法OECD 301B,301C,301F或306进行测试时,在28天内大于约60%的生物降解。
摘要:
The invention provides a hydraulic binder, dry premixes and cement compositions having the improved property of maintaining unaltered, brilliance and coloring quantity for a longer time period. These compositions contain, in bulk, particles of a photocatalyst capable of oxidizing polluting substances in the environment in the presence of light, oxygen and water.
摘要:
A coating mortar compound for pressure spraying over a surface to be levelled. The mortar compound comprises as active ingredients the following three ingredients: a) hydraulic lime, preferably of moderate hydraulicity; b) Portland cement; c) vinyl acetate dry polymer; and further comprising as filler and the main ingredient in weight of the total compound weight the following single ingredient: d) a mineral filler, preferably silica sand. Upon having been sprayed over a surface to be levelled, the mortar compound remains both permeable to water vapors while enabling scupturing thereof even after partial curing thereof. Various additives may be included to enhance the performance of the composition. These optional additives include: hollow glass or ceramic spheres, a defoaming agent, a water retention agent, a rheological aid, a water repellent agent, a water reducing agent, and an accelerator agent.
摘要:
An hydraulic composition for setting or hardening soils comprising 100 parts by weight of a component A and 6 to 10 parts by weight of a component B. Component A is the product obtained by calcining a mixture of the following constituents: 100 parts by weight of limestone; 3 to 6 parts by weight of alumina; 15 to 30 parts by weight of silica; 4 to 10 parts by weight of magnesium oxide; 5 to 10 parts by weight of iron oxides; and 5 to 10 parts by weight of magnesium chloride. This mixture is preferably calcined at a temperature between about 1,000* and about 1,300* C. and is thereafter rapidly cooled to a temperature below about 100* C. The calcined granules so produced are pulverized and mixed with component B having the following preferred composition: 79 parts by weight of calcium sulphate; 55 to 75 parts by weight of an alkaline earth metal chloride; 5 to 10 parts by weight of an alkali metal silicofluoride; 10 to 20 parts by weight of an alkali metal carbonate; 10 to 20 parts by weight of a buffering agent; 30 to 50 parts by weight of lignin sulfonate. A further improvement can be made by adding a component C to the mixture of components A and B. Component C has the following composition: 100 parts by weight of at least one member selected from the group consisting of weathered granite soil calcined at 700* to 900* C., decomposed basalt soil calcined at 300* to 500* C., and volcanic ashes or decomposed andesite soil calcined at 300* to 500* C.; and 40 to 60 parts by weight of at least one member selected from the group consisting of sand or pozzolan gravel calcined at 200* to 300* C., limestone residue which comprises overheated calcined residue which is not returned to slaked lime in the presence of water, calcined at 200* to 300* C., calcium hydroxide calcined at 200* to 300* C., nickel blast furnace slag calcined at 200* to 300* C., and the residue of electrolytic refining of aluminum calcined at 200* to 300* C. Component C is preferably employed in the range of about 10 parts by weight to about 20 parts by weight per 100 parts by weight of component A.