摘要:
The invention relates to a dried, unfired material from at least one silicate-containing base material and a water-repelling agent. The base material selected from marl, clay, lime or mixtures thereof is contained in an amount between 35 and 95% by weight, and at least 8% of at least one water-repelling agent selected from oils or greases and optionally one or more organic or inorganic additives are included, the remainder being water. The invention relates furthermore to a method for producing a dried, unfired material, which is characterised by water resistance and frost resistance.
摘要:
Compositions and methods for the deposition of ettringite (3CaO.A12O3.3Ca(SO4).30-32H2O) onto the surfaces of fibers, aggregates, and other fillers. The ettringite is produced in situ within an aqueous suspension while in proximity to the fibers, aggregates, or other fillers to form a mineralized composite material comprising ettringite coated fibers, aggregates or other fillers. Ettringite treated fibers, aggregates, or other fillers are formed by adding chemical reactants such as calcium oxide and aluminum sulfate, which react together in the presence of water to form ettringite, which then precipitates onto the surface of the fibers or other substrates being treated. The ettringite treated fibers, aggregates or other fillers can be added to hydraulically settable materials to improve the chemical and mechanical bond between the fibers or other substrates within the resulting hardened hydraulically settable composite material, particularly a cementitious or concrete material.
摘要:
Cellulose fibers such as wood pulp are made more suitable for reinforcement of cement products by a treatment which reduces their swelling in aqueous and alkaline mediums. The fibers are dispersed in water, allowed to swell, and impregnated with a solution of a titanium and/or zirconium chelate compound. After drying, the fibers are heated to react the chelate compound(s) with the hydroxyl on the cellulose fibers, preferably to produce cross-linking between hydroxyl group residues. The treated fibers are more stable in cement media, and, despite their increased hydrophobicity, are dispersible in cement slurries to give good web formation in the manufacture of cement products such as sheet. They impart improved flexural strength and modulus to cement products compared with untreated cellulose reinforcing fibers.
摘要:
A composition with adjustable characteristics, the composition including charged coir fibre pith or dust charged with at least one material having desirable characteristics.
摘要:
Verfahren zur Herstellung von Baustoffen mit pflanzlichem Zuschlag, umfassend das Mischen (a) des ggf. zerkleinerten pflanzlichen Zuschlags, (b) eines Mineralisators aus Kalkhydrat, bevorzugt aus Weißkalkhydrat, (c) eines Bindemittels auf Zementbasis, und (d) einer entsprechenden Menge an Anmachwasser. Fertichmischung bzw. Baustoff zur Herstellung leichtgewichtiger schichten mit guter Verbindung zwischen pflanzliche Zuschlag und Bindemittel sowie guten physikalischem Eigenschaften.
摘要:
The invention relates to a lignocellulose additive and to a method for producing it, based on chip-like processing material composed of wood, wood shavings and/or parts of stalk plants, said material being provided with a casing, wherein the individual elements of the additive comprise the lignocellulose core and a casing composed of hardened mineral binder. Such technical solutions are required in the building sector for the production of lightweight concrete and for the production of heat-insulating and sound-insulating fills.
摘要:
Die Erfindung betrifft einen lignocellulosischer Zuschlagstoff und ein Verfahren zu dessen Herstellung, auf der Basis von spanartigem Aufbereitungsgut aus Holz, Schaben und/oder Halmpflanzenteilen, welches mit einer Ummantelung ausgestattet ist, wobei die einzelnen Elemente des Zuschlagstoffs aus dem lignocellulosischen Kern und einer Ummantelung aus ausgehärtetem mineralischen Bindemittel bestehen. Derartige technische Lösungen werden im Bauwesen für die Herstellung von Leichtbeton und für die Herstellung von wärme- und schalldämmenden Schüttungen benötigt.
摘要:
The invention relates to a method for producing construction parts comprised of a material which is hard when the construction part is finished and of a reinforcement which stabilizes said material. The invention provides that the stabilizing reinforcement is formed by using wood treated with cement slurry. The construction parts can, in particular, be walls, ceilings and roofs for low-energy houses.
摘要:
Methods and compositions for treating a subterranean formation are described. The methods include providing a petrified cellulosic material, combining the petrified cellulosic material with a treatment fluid, and introducing the treatment fluid with the petrified cellulosic material in the subterranean formation.
摘要:
Bei einem Zuschlagstoff aus Holzspänen mit einer Ummantelung aus einem mineralischen Bindemittel, enthält die Ummantelung neben dem mineralischen Bindemittel weitere mineralische Feinstpartikel, wobei wenigstens 50 % der weiteren mineralischen Partikel einen Partikeldurchmesser von 0,05 bis 0,7 µm aufweisen.