Patent
Cement-based elastic grouting material suitable for repairing concrete cracks in deep water and preparation method thereof
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TLDR
In this article, a grouting material for repairing concrete cracks in deep water is proposed, which has the characteristics of high binding strength with underwater concrete, high head permeation resistance, high corrosion resistance and high elasticity, adaptability to concrete crack vibration and deformation.Abstract:
The invention relates to an engineering material and particularly relates to a grouting material for repairing concrete cracks in deep water. Cement, slag powder and rubber powder are taken as base materials, silica powder, gypsum powder, polyester fiber, a water reducing agent, water-based latex and a water-based curing agent are added according to a certain ratio, water is added, then the components are blended to form a groutable underwater non-dispersible plastomer, the plastomer is solidified to form an elastic solid capable of being bonded firmly to the interface of a concrete crack, andthe grouting material is mainly applied to the field of repair of concrete cracks in hydraulic engineering. The solidified cement-based elastic grouting material has the characteristics of high binding strength with underwater concrete, high head permeation resistance, high corrosion resistance, high elasticity, adaptability to concrete crack vibration and deformation, and the like.read more
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Patent
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Polymer-modified cements with improved chemical resistance
TL;DR: A coating composition is used for coating or overlaying Portland cement concrete or metal as discussed by the authors, which includes a synthetic polymer latex having ureido functional groups, an amine functional epoxy curing agent, a liquid epoxy resin, and a hydraulic cement.
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High-ductility cement-based composite material for repairing hydraulic concrete structure
TL;DR: In this article, a high-ductility composite material for repairing a hydraulic concrete structure is presented, which consists of 20 to 60 parts of cement, fly ash, 0 to 80 parts of pulverized slag powder, 5 to 10 parts of light-weight calcium powder, 1 to 5 parts of nanometer SiO2, 25 to 40 parts of a fine aggregate, 20 to 40 part of water, 0.1 to 1 part of a water reducing agent and 0.5 parts of polyvinyl alcohol fibers.
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Crack-resistant and durable cement-based elastic protective mortar and preparation method thereof
TL;DR: In this article, a crack-resistant and durable cement-based elastic protective mortar provided by the invention can solve the cracking problem caused by the drying shrinkage and large internal and external temperature difference in the fields of hydraulic engineering, waterway engineering, traffic engineering, civil engineering and the like, and simultaneously can raise the endurance of protected concrete and enhance the antiseepage and heat insulation effects of buildings.