57results about How to "Pozzolanic activity" patented technology

The invention provides a method for preparing a carbonized brick from wet-milling carbide slag. The method comprises the following steps: carrying out wet milling on 150-300 parts of carbide slag and75-150 parts of water to realize refining of carbide slag particles and high alkalinity of a liquid phase; preparing 120-200 parts of wet-milled carbide slag slurry, 10-35 parts of gypsum and 50-120 parts of slag as cementing materials, adding 420-865 parts of fine aggregate and 0-18 parts of wate and fully and evenly stirring the components, press-shaping the the stirred raw materials, and performing maintenance in a carbonization chamber to obtain the wet-milling carbide slag carbonized brick. By adopting the method, gas carbon dioxide can be cured, and environmental pollution caused by industrial waste gas is reduced; by utilizing the advantage that the wet-milling carbide slag is easy to carbonize and is easy to react with carbon dioxide to form calcium carbonate, and precipitate and crystal growth have cohesion, the prepared brick is high in strength and short in curing age, the production efficiency is improved, and the brick can effectively replace a common brick for construction.

The invention relates to a building rubbish pavement base material and a preparation method thereof. The pavement base material is prepared from the components in parts by mass: 95 to 96 parts of building rubbish recycled aggregate, 4 to 5 parts of binding material, 9.4 to 12.2 parts of water relative to the sum of the components i.e. the building rubbish recycled aggregate and the binding material, and 3.5 to 5.5 parts of alkali-activator relative to the mass of water. The pavement base material provided by the invention adopts building rubbish and industrial waste residues as main raw materials, and the material has the advantages of high strength, dry shrinkage, long construction working time and the like. By applying the building rubbish pavement base material provided by the inventionin a large scale, not only can considerable economic benefit be produced, but also a huge environmental protection benefit can be produced.

The invention discloses a dry powder interface treating agent for aerated concrete. The dry powder interface treating agent is prepared from the following ingredients in parts by weight: 100 parts of cement, 30 to 50 parts of fly ash, 20 to 30 parts of slag powder, 1 to 5 parts of redispersible latex powder, 200 to 300 parts of sand, 0.1 to 0.3 part of hydroxypropyl methyl cellulose, 2 to 5 parts of a sulphoaluminate expanding agent, 1 to 3 parts of cellulose fibers, 2 to 5 parts of polyvinyl alcohol fibers, and 2-3 parts of nano silicon oxide. The invention further discloses a preparation method of the dry powder interface treating agent for the aerated concrete. The interface treating agent prepared by the invention not only has good adhesive property, but also has good impermeability.

The invention provides a production process for separating and recycling metal smelting slag, which belongs to the technical field of metal smelting solid waste utilization, and is characterized in that slag harmless treatment is carried out through sequential cooling treatment, secondary metal recovery and tailing comprehensive recovery and utilization processes, so that sustainable development of enterprises is realized; firstly, slag granulation and dehydration are carried out through a Jiaheng process to replace hydraulic conveying in a traditional process, the process is simple and reliable, environmental pollution is small, and the quality of finished slag is good; according to the invention, residual metal is removed through high-temperature reduction, and the smelting slag is activated through a modification treatment method and is used as a binding material admixture, so that the hardening strength of the binding material is improved, the slag waste is effectively utilized, and the comprehensive utilization rate of the slag waste is improved.

The invention relates to a building rubbish pavement base material and a preparation method thereof. The pavement base material is prepared from the components in parts by mass: 95 to 96 parts of building rubbish recycled aggregate, 4 to 5 parts of binding material, 9.4 to 12.2 parts of water relative to the sum of the components i.e. the building rubbish recycled aggregate and the binding material, and 3.5 to 5.5 parts of alkali-activator relative to the mass of water. The pavement base material provided by the invention adopts building rubbish and industrial waste residues as main raw materials, and the material has the advantages of high strength, dry shrinkage, long construction working time and the like. By applying the building rubbish pavement base material provided by the inventionin a large scale, not only can considerable economic benefit be produced, but also a huge environmental protection benefit can be produced.

The invention provides a method for preparing carbonized bricks by wet grinding calcium carbide slag: 150-300 parts of carbide slag and 75-150 parts of water are wet-ground to realize the refinement of carbide slag particles and the high alkalinity of the liquid phase; Wet ground calcium carbide slag slurry, 10-35 parts of gypsum, 50-120 parts of slag as cementing material, add 420-865 parts of fine aggregate, 0-18 parts of water and mix well, and press the raw materials after mixing. , and cured in the carbonization chamber to obtain wet-ground carbide slag carbide bricks. This method can solidify gaseous carbon dioxide and reduce the pollution of industrial waste gas to the environment; taking advantage of the advantage of easy carbonization of wet-ground carbide slag, it is easier to react with carbon dioxide to form calcium carbonate, and the precipitation and crystal growth have cohesive force; the prepared bricks have high strength and are easy to maintain The age is short, the production efficiency is improved, and it can effectively replace ordinary bricks in construction.

The invention discloses high-volume mixed glass powder C190UHPC (Ultra-High Performance Concrete) and a preparation method thereof. The high-volume mixed glass powder C190UHPC is prepared from the following components in proportions: 773.4kg / m<3> of cement, 154.7kg / m<3> of silica fume, 38.7kg / m<3> of pulverized fuel ash, 154.7kg / m<3> of fine glass powder, 46.4kg / m<3> of a superplasticizer, 216.6kg / m<3> of coarse glass powder, 866.2kg / m<3> of quartz sand, 193.4kg / m<3> of water and 156kg / m<3> of steel fiber. The invention also discloses the preparation method of the high-volume mixed glass powder C190UHPC. A maintenance mode is characterized by tightly coating a concrete test block by using wet cotton cloth, and intermittently spraying water at a high frequency for maintaining, or maintaining in water. Not only a maintenance system is simplified, but also evaporation of water in concrete is effectively prevented. The high-volume mixed glass powder C190UHPC disclosed by the invention hasthe following technical advantages that waste glass can be recycled, consumption of natural materials is reduced, and the effect of environmental protection is achieved; the glass powder has pozzolanic activity, so that the strength and the durability of the concrete are increased; due to the doping of the glass powder in different grain diameters, accumulation gaps between the quartz sand is remedied, and the structure is tighter; a water-glue ratio and the superplasticizer are preferably selected, so that the high-volume mixed glass powder C190UHPC has the advantage of self-compaction.

The invention discloses a high-temperature oil well plugging agent and belongs to the technical field of petroleum drilling materials. The high-temperature oil well plugging agent is prepared from raw materials in percentage by mass as follows: 60%-85% of a cementing material, 2%-10% of phosphate, 10%-35% of an active admixture, 0-5% of a filling material and 3%-6% of a retarder; the cementing material is aluminate cement. Properties of the cementing material are selected, phosphate, the active admixture and the retarder in a specific proportion are added, so that after cement slurry reaches a leaking layer position and loses fluidity, the strength of set cement is quickly increased, plugging is realized by the aid of self strength, and the plugging agent has the characteristic of early strength, meets the requirement of plugging at 80-120 DEG C and has the advantages of good high-temperature resistance and good plugging effect.