A concrete block wet cast ready mix composition preferably includes ground recycled glass, river sand, river gravel, cement, soap, water and a water proofing substance. The river gravel preferably includes natural stone, granite, limestone and domite. The cement is preferably an off white cement. The soap is preferably laundry detergent. The water proofing substance is preferably Grace Optec Admix waterproofing. The wet cast composition is preferably mixed in the following manner. The ground recycled glass, the river sand and the river gravel are mixed together to form an aggregate mix. The cement is combined with the aggregate mix to form a cement aggregate mix. Water is added to the cement aggregate mix to form a wet aggregate mix. Finally, the soap and the waterproofing substance are combined with the wet aggregate mix. The wet cast composition is now ready to be poured into concrete block molds or poured as cast concrete.

Hemp straw is ground and burnt to result in hemp straw ash for making concrete. The hemp straw ash is mixed with water, cement, fine aggregate, coarse aggregate and superplasticizer using a two-step addition process to form a concrete mixture. The two-step addition process follows a specific order for the addition of the materials to a concrete mixer drum. Concrete made using the hemp straw ash is useful for lower-strength applications.

A method for manufacturing of paver block and bricks includes addition of cementitious materials, additives, and binding materials. The method also includes homogenization of the added materials to obtain a first mixture, addition of a hardener solution to the first mixture, mixing the first mixture with the hardener solution for 5 to 30 minutes to obtain a second mixture, casting the second mixture into a mold to obtain a solidified part, and curing the solidified part in atmospheric air.

Hemp straw is ground and burnt to result in hemp straw ash for making concrete. The hemp straw ash is mixed with water, cement, fine aggregate, coarse aggregate and superplasticizer using a two-step addition process to form a concrete mixture. The two-step addition process follows a specific order for the addition of the materials to a concrete mixer drum. Concrete made using the hemp straw ash is useful for lower-strength applications.

Disclosed is a composition for a Controlled Low Strength Material (CLSM) including cementitious materials, water, and fine aggregate. The cementitious materials include powdered basaltic lava and Ordinary Portland Cement (OPC). In the composition, the basaltic lava replaces some of the ordinary Portland cement in the CLSM as compared to a conventional CLSM. The basaltic lava replaces 25% to 90% of the OPC in a conventional CLSM. The CLSM can be used as a compacted fill for structural and non-structural construction applications.

Methods of producing cured CO.sub.2 sequestering solid compositions, e.g., precipitate or aggregate compositions, are provided. Aspects of the methods include preparing an initial CO.sub.2 sequestering solid composition, and then contacting the initial composition with a curing liquid sufficient to produce a cured CO.sub.2 sequestering solid composition. Also provided are systems for performing the methods and cured CO.sub.2 sequestering solid compositions produced therefrom.

The invention relates to an environment-friendly artificial stone with low cost and high strength and a preparation method thereof, the artificial stone comprises the following raw materials in parts by mass: 60-80 parts of fritted sand; 10-30 parts of quartz powder; 9-14 parts of terephthalic unsaturated polyester resin; 0.6-1 parts of curing agent; 0.8-1 parts of coupling agent; 0.5-1 parts of pigment paste; 0.1-1 parts of pigment powder. The invention has advantages of: (1) using mine solid waste or waste materials as raw materials, and using blast-furnace gas and coke-oven gas recovered and purified in the productive process of the steel plant and coking plant as fuel, the production process is green and environment-friendly, which can recycle waste materials. (2) high strength, natural stripe, elegance appearance, green and environmental protection, and being recognized by global customers and promising in worldwide market.

The invention provides compositions and methods for controlling setting of carbonatable calcium silicate compositions that are contaminated with hydrating materials. These carbonatable calcium silicate cements are suitable for use as non-hydraulic cement that hardens by a carbonation process and may be applied in a variety of concrete components in the infrastructure, construction, pavement and landscaping industries.

The present disclosure generally relates to scavenging hydrogen sulfide. The disclosure pertains to non-aqueous and non-volatile compositions that include a monolignol alcohol and hydrogen sulfide scavenging compound. The hydrogen sulfide scavenging compound may be hexamine in some aspects. The compositions may also include a C.sub.2-8 polyol. The compositions disclosed are stable and can be used, for example, in removing hydrogen sulfide from hot asphalt.

The present disclosure is related to a family of oil-based dispersions of organic and inorganic metal compounds for use as a hydrogen sulfide scavenger in asphalt, and the preparation thereof. These dispersions comprise organic and inorganic metal compounds, organic solvents, an organoclay suspension agent, an emulsifier and optionally a polymeric stabilizer. The organic and inorganic metal compounds are in the form of micron-sized particles. Copper-based dispersions are particularly effective at reducing the hydrogen sulfide emission of asphalt in the presence of polyphosphoric acid.