Abstract:
A fluid loss additive for hydraulic cement, comprising a polyvinyl alcohol resin and a fluid loss ameliorating sulfonic acid-functionalized co-resin, where the polyvinyl alcohol has a characteristic viscosity in the range of about 1 to about 25 cps. The invention includes, in some embodiments, an aqueous concentrate of the PVOH resin and the sulfonic acid-functionalized co-resin, where the total resin content is in the range of about 10 % to about 40 % and the viscosity is less than 15,000 cps. By way of the invention it is possible to adjust hydraulic cement slurry characteristics in real time upon demand and reduce inventory by providing a concentrated aqueous fluid loss additive.
Abstract:
A mixture composition of a cellulose ether made from raw cotton linters and at least one additive is used in a dry tile cement composition wherein the amount of the cellulose ether in the tile cement composition is significantly reduced. When this tile cement composition is mixed with water and applied to a substrate, the correction time, applicability, and sag resistance of the wet mortar are comparable or improved as compared to when using conventional similar cellulose ethers.
Abstract:
The invention relates to a method for producing a coating on a porous and/or absorbent material, by the radiation-induced polymerisation of a liquid coating agent.
Abstract:
The invention relates to a method for producing a coating on a porous and/or absorbent material, by the radiation-induced polymerisation of a liquid coating agent.
Abstract:
A viscous breakable gel additive carrier for mixing with ion containing materials, including dry powder based and calciferous materials, which in its gel form, prevents separation and settling of pigments and other non-soluble chemical additives prior to mixing., is easily measurable, and upon mixing with the ion containing materials liquefies and becomes totally and evenly miscible to allow easy and precise mixing to produce uniform homogeneous mortars, grouts, stuccos and other compositions.
Abstract:
Lightweight concrete that is composed of a mixture of cement, low-density aggregate, water, surfactants, resins and foams pre-manufactured with the mixer or produced by injecting water, characterised in that the final density is within a range of between 250 kg/m3 and up to 1200 kg/m3, the low-density aggregate being pumice stone, volcanic material or baked clay; furthermore, for a density of between 300 kg/m3 up to 1 100 kg/m3 it offers resistance to compression of between 0.9 and 14.3 MPa. Lightweight concrete is ideal for usage in panels for flooring, ceiling and walls, is compatible with all types of finishing, causes minimum waste levels on site, is easy both to transport, and to assemble in elements and structures, and has good fire-resistance, low thermal conductivity, waterproofing and soundproofing.
Abstract:
An improved water-resistant gypsum product prepared with a high-viscosity siloxane is provided. A fuel-efficient method for making the product and reducing the amount of siloxane dust released is provided as well.
Abstract:
The invention relates to a method and device for composing fine aggregates for concrete, to fine aggregates composed in this way and concrete produced therewith, and also to methods for determining the conductivity ratio of a sand and for measuring viscosity of concrete produced therewith. The invention is based on the insight that the conductivity ratio of a sand, i.e. the electrical conductivity of a mixture of the said sand in a liquid divided by the electrical conductivity of the liquid, is a significant indicator for predicting the viscosity properties of concrete produced using the corresponding sand. Matching the conductivity ratio to an ideal value for the said sand also allows the viscosity to be minimized. The conductivity ratio can be matched, for example, by mixing with another suitable sand grade, in particular a fine sand grade, or altering the salt content.
Abstract:
The present invention relates to a non-shrink high viscosity chemical grout composition, more particularly to a non-shrink high viscosity chemical grout composition comprising, on the basis of solid content, a) 100 parts by weight of a room temperature curable organic liquid phase resin; b) 10 to 200 parts by weight of glass beads; and c) 10 to 500 parts by weight of glass powder. In addition, the present invention relates to a method for repairing and reinforcing a construction using the non-shrink high viscosity chemical grout composition. The non-shrink high viscosity chemical grout composition of the present invention has superior acid resistance, alkali resistance, injection property, fluidity, crack resistance, impact resistance, adhesion property and storage property, and the method for repairing and reinforcing a construction of the present invention has affinity with subsidiary materials, can completely restore function and shape of a construction in short time due to rapid curing and simple construction, compensates properties of construction such as tensile strength, allows strong adhesion to a construction, and prolongs lifetime of a construction.