The invention discloses high strength concrete and its preparation method, and relates to the technical field of building materials. 1 m of the high strength concrete comprises the following ingredients: 200-300 kg of ordinary Portland cement, 40-50 kg of mineral powder, 15-30 kg of rubber particles, 500-800 kg of fine aggregate, 600-900 kg of coarse aggregate, 20-60 kg of a concrete composite additive, 50-100 kg of polypropylene fiber, 100-200 kg of water, 45-90 kg of phosphorous slag powder, 2-3 kg of a corrosion inhibitor, 5-10 kg of a water reducing agent, and 10-20 kg of a reinforcing agent. According to the prepared concrete product, compressive strength is remarkably raised, cracks are minimized, and life of concrete structures is prolonged. In addition, the preparation method is simple, and production efficiency is high.

High strength concrete and preparation method thereof

The invention discloses a high-adaptability polycarboxylic acid water reducing agent. The high-adaptability polycarboxylic acid water reducing agent is prepared by performing a free radical copolymerization reaction on a carboxylic acid monomer A, a high-molecular-weight polyether macromonomer B, a functional polycation macromonomer C and an unsaturated phosphate monomer D in a mole ratio of (1-5):1:(0.1-0.3):(0.05-0.2). The high-adaptability polycarboxylic acid water reducing agent disclosed by the invention is suitable for regions in which the clay content of sandstone aggregate is high, and has the advantages of low doping amount, high water reducing rate and high slump retaining properties. The preparation technique of the high-adaptability polycarboxylic acid water reducing agent is simple; and the production process is green and environment-friendly, and is low in cost.

High-adaptability polycarboxylic acid water reducing agent and preparation method thereof

The invention provides a foaming agent for plugging gas channeling in displacement of reservoir oil by using CO2. The foaming agent is composed of the following components in percentage by weight: 0.12%-0.30% of anionic surfactant, 0.06%-0.15% of imidazoline-derived ampholytic surfactant, 0.12%-0.30% of lycine-derived ampholytic surfactant, 0.02%-0.04% of foam stabilizer and the balance of water. The foaming agent for plugging gas channeling in displacement of reservoir oil by using CO2 is characterized in that the anionic surfactant, the imidazoline-derived ampholytic surfactant, the lycine-derived ampholytic surfactant and the foam stabilizer are combined so that the obtained foaming agent is capable of forming stable foam with the CO2, and thus is strong in foaming capacity and high in stability; the foaming agent has high plugging selectivity and can be used for plugging CO2 channeling in the displacement of reservoir oil by using CO2, and therefore, the plugging effects of plugging water rather than oil and plugging large rather than small can be achieved, and the oil recovery factor and the effect of the displacement of reservoir oil by using CO2 can be improved.

Foaming agent for plugging gas channeling in displacement of reservoir oil by using CO2

The invention discloses a preparation method of a mud resisting and slump retaining type phosphate group containing polycarboxylate superplasticizer The preparation method comprises the following specific steps that 1, a halogen containing polycarboxylate superplasticizer prepolymer is prepared, wherein halogen containing unsaturated monomers, halogen containing unsaturated acid small monomers and halogen containing unsaturated polyether macromonomers or unsaturated ester macromonomers are subjected to an oxidation-reduction radical polymerization reaction to obtain the halogen containing polycarboxylate superplasticizer prepolymer; 2, the halogen containing polycarboxylate superplasticizer prepolymer and alkyl phosphate are subjected to an Arbuzov reaction to obtain a phosphate group containing copolymerization product, the pH value is adjusted after reacting is completed, water is added, and then the polycarboxylate superplasticizer is obtained The mud resisting and slump retaining type phosphate group containing polycarboxylate superplasticizer prepared through the method has the advantages of being low in mixing amount, high in water reducing ratio, long in slump retaining time and high in mud resisting property, can avoid the adverse effect brought by mud containing aggregate in concrete and is simple in synthesis process, easy to control and low in production cost

Preparation method of mud resisting and slump retaining type phosphate group containing polycarboxylate superplasticizer

The invention discloses a water-reducing slump-retaining type polycarboxylic acid water reducing agent and a preparing method thereof. The water-reducing slump-retaining type polycarboxylic acid water reducing agent has the pH of 6.0-7.0 and comprises the following raw materials in parts by weight: 190-200 parts of methyl-2-buten-1-ol polyoxyethylene ether with the molecular weight of 600-3000, 15-25 parts of acrylic acid, 1-5 parts of hydroxyalkyl acrylate, 0.1-3 parts of unsaturated phosphate, 0.5-5 parts of unsaturated alcohol ether, 1.0-3.5 parts of an oxidant, 0.1-2 parts of a reductant, 0.1-2 parts of sodium formaldehyde sulfoxylate, 0.5-2.5 parts of a chain transfer agent, 325 parts of water, and a proper amount of a caustic soda liquid with the mass concentration of 30-32%. The water-reducing slump-retaining type polycarboxylic acid water reducing agent has the advantages of high content of effective components, good dispersion and excellent performance; and the preparation method adopts a room temperature process and a composite initiation system, has the appropriate reaction temperature of 5-40 DEG C, has no need of heating, makes the production more convenient and the cost lower, saves energy and protects the environment.

Water-reducing slump-retaining type polycarboxylic acid water reducing agent and preparing method thereof

The invention discloses a high-performance polycarboxylate water reducing agent. The polycarboxylate water reducing agent has a structural general formula shown as a structural formula (I). The invention further provides a preparation method of the high-performance polycarboxylate water reducing agent. Apart from a polyether macromonomer and an unsaturated carboxylic acid monomer, an unsaturated phosphate monomer is added to obtain a product, namely, the high-performance polycarboxylate water reducing agent having a phosphate structure. The polycarboxylate water reducing agent disclosed by the invention is safe and simple in preparation process, environmentally friendly, low in energy consumption, low in cost, and suitable for industrial large-scale production. In the structural formula (I), R1 is -H, -COO- or -CH2COO-; R2 is -H or -CH3; R3 is -H or -CH3; R4 is -H or -CH3; R5 is -H or -CH3; R6 is -CH2- or -CH2CH2-; X, Y, Z and n are integers; X=1-100; Y=1-100; Z=1-100; and n=22-53.

High-performance polycarboxylate water reducing agent and preparation method thereof

The invention discloses an organic composite reinforced concrete rust inhibitor and a preparation method thereof. According to the invention, the rust inhibitor is prepared from well-mixed materials of, by weight: 30-40% of alcohol amine carboxylate, 5-10% of sodium monofluorophosphate, 0.1-0.5% of an anionic surfactant, and balance of water. The rust inhibitor has a good diffusion performance inconcrete, and can simultaneously acts upon the cathodes and the anodes of steel bars. The trust inhibitor forms stable chelate rings with the steel bars, and has an excellent rust inhibiting performance. Also, the anions in the rust inhibitor can be combined with calcium ions in the concrete, such that precipitates are formed. With the precipitates, capillary pores in the concrete can be obstructed, and the chloride ion penetration resistance of the concrete can be improved.

Organic composite reinforced concrete rust inhibitor and preparation method thereof

The invention discloses high-performance steam-curing-free durable concrete containing metakaolin and a construction method of segments. The steam-curing-free durable concrete containing metakaolin is characterized by comprising the following components in parts by weight: 100 parts of silicate cement, 10-50 parts of pulverized fuel ash, 5-20 parts of metakaolin, 180-280 parts of natural sand, 300-370 parts of broken stone, 0.6-1.0 part of polycarboxylate water reducer, and 37-45 parts of mixing water. Concrete segments with the designed size and shape, which are prepared by the construction method disclosed by the invention, have the characteristics of good operation performance, achievement of rapid turnaround of a mold without steam curing, low energy consumption, high early-stage, middle-stage and later-stage mechanical properties, excellent durability and good volume stability.

Steam-curing-free durable concrete containing metakaolin and construction method of segments

The invention relates to the technical field of construction of underground engineering and particularly relates to a seawater mud adjusting agent The seawater mud adjusting agent comprises following raw materials in percentage by weight: 1%-2% of a glue type mixture, 05%-1% of a fermentation mixture, 01%-05% of a thickening agent and the balance of water The seawater mud adjusting agent has the advantages that seawater can be directly utilized and the seawater mud adjusting agent has high viscosity, colloid fraction, no toxin and no pollution when being compared with fresh water mud; the seawater mud adjusting agent is good for improving the overall performance of the mud and is also good for energy conservation and emission reduction of the construction engineering

Zhang Hong

Papers

High-performance polycarboxylate water reducing agent and preparation method thereof

Organic composite reinforced concrete rust inhibitor and preparation method thereof

Steam-curing-free durable concrete containing metakaolin and construction method of segments

Seawater mud adjusting agent

Composite stratum waste soil improving foam additive