A composition for forming a bio-compatible membrane applicable to building material, such as concrete, cement, etc., to a method of applying said composition for forming a biocompatible membrane, a biocompatible membrane, use of said membrane for various purposes, and to building material comprising said membrane.

Examples of novel self-repairing cement-polymer composites and processes of making and using are detailed that address various problems in prior art cements. These matrices, compositions and materials that are more mechanically robust, thermally stable and chemically resistant and demonstrate better bonding to various structures and materials, than other self-healing cements known in the prior art. When in place under preselected conditions (the formulation of the slurry can be modified for optimal effectiveness under various conditions) the organic, cross linking and cement forming portions within the slurry form interconnecting chemical bonds and cures to form a self-repairing and self-re-adhering cement polymer composite matrix in the receiving location.

An eco-tile useful for promoting the growth of fauna and flora in an aquatic environment, the eco-tile including at least one type of cement; aggregates comprising at least two fine aggregates and coarse aggregates; and milled incineration sewage sludge ashes, wherein the at least two fine aggregates comprise dredged marine sediment, eco-concrete precursors thereof, and methods of use and preparation of the same.

An interface joint material based on industrial solid waste includes raw materials in parts by weight: portland slag cement, 80?130 parts; metakaolin, 80?130 parts; the industrial solid waste, 80?130 parts; sodium silicate, 25?35 parts; alkali, 8?12 parts; acrylate, 30?36 parts; a trivinyl ether compound, 1?3 parts; inorganic sulfite, 1?3 parts; persulfate, 1?3 parts; a water reducing agent, 3?6 parts, and water, 60?80 parts. The interface joint material is suitable for a concrete interface of different components, with good bonding, high strength, and the advantages of pumping, fast hard, early strength, micro expansion and high ductility; In addition, the industrial solid waste is added into the interface joint material, which improves a utilization rate of the industrial solid waste in construction joint materials, and has significant for recycling of the industrial solid waste.

An underwater rapid repair material for marine steel structure comprises: 20 to 50 parts by weight of an alkali activation material, 3 to 12 parts by weight of a fast hardening waterborne polymer curing agent, 2 to 8 parts by weight of a fast hardening waterborne polymer precursor, 30 to 100 parts by weight of an aggregate, 1 to 5 parts by weight of an activator and 3 to 20 parts by weight of a water. The underwater rapid repair material provided by the present invention is not dispersed and segregated in water, with an initial setting time as low as 0.5 hours and a final setting time as low as 1.1 hours, after pouring 3 hours, the compressive strength and flexural strength can reach about 60 MPa and 10 MPa respectively, and has high bonding strength to steel and is not easy to fall off after solidification.

A method of forming a structure includes a) excavating a material; b) homogenizing the material; c) ensuring aluminosilicate levels in the material; d) increasing alkaline levels of the material; e) foaming the material; and f) injecting the material onto a surface, wherein the material forms into a foam-like structure when injected.

The invention relates to the use of a multi-component composition comprising A) a polyol component (A) comprising at least one polyol and water, B) a hardener component (B) comprising at least one polyisocyanate, and C) a solid component (C) comprising a hydraulic binder and one or more aggregates, as an early water resistant construction or repair material for constructing, repairing or refurbishing component parts, wherein the mixed and applied multi-component composition is immersed in water not later than 8 hours, preferably not later than 2 h, after application.

The use as an early water resistant construction or repair material is especially suitable for component parts, which are in contact with water during operation such as offshore wind energy plants or water retaining systems, e.g. pipelines.

The present invention belongs to the field of composite materials, particularly to an underwater non-dispersible quick-setting and rapid-hardening cement-based composite material and the preparation method and application thereof. The material consists of the following raw materials in percentage by weight: 32%-34% of silicate cement, 8.8%-9% of calcium aluminate, 5%-7% of magnesium oxide, 0.5%-2% of sulfur trioxide, 0.2%-0.3% of polycarboxylate high performance water-reducing agent, 0.3%-0.7% of flocculant, 0.05%-0.2% of setting accelerator, 0.05%-0.2% of air-entraining agent, 0.05%-0.3% of rust inhibitor, 26%-31% of fine aggregate, 13%-18% of coarse aggregate, and 8.4%-8.5% of water. The material can be used for rapid repair of cement buildings in water conservancy projects, the repair material can be quickly set and the initial strength can be guaranteed.

The present invention relates to a new method for stabilising marine clays such as sediments, marine sediments, or dredging muds by using mussel shell powder and cement, their use and a respective product. A properly treated milled shell powder is mixed with a cement in order to obtain a solid composition of powders, which is subsequently mixed with the marine clay to obtain a product that can be used in the building industry.

The present invention provides concrete-containing compositions, and methods of making and using the same, that allow for the prevention of microbially induced corrosion in concrete. In certain embodiments, the concrete-containing compositions comprise a cementitious substrate, and a formulation of heavy metal-laden, carbon-based sorbent.