ConcreteTechnical Field
The invention relates to the technical field of material science, in particular to concrete.
Background
In the conventional environment, nearly 20% of cement in the concrete is not completely hydrated, only plays a filling role, cannot be effectively dispersed to generate chemical reaction, and cannot effectively exert the effectiveness of the cement. Although the admixture has the characteristics of reducing the cement consumption, improving the workability of fresh concrete and the like, the admixture is difficult to act on the concrete after being added to a certain degree due to different influence mechanisms of different admixtures on the cement and the like. Therefore, how to excite the strength of the part of unhydrated cement becomes a problem to be solved urgently.
Disclosure of Invention
The invention aims to provide concrete with good mechanical property aiming at the defects in the prior art.
The concrete comprises the following components in parts by weight: 15-30 parts of mixed material, 10-15 parts of gypsum, 60-200 parts of sand, 0.2-0.5 part of excitant, 15-30 parts of water, 0.5-3 parts of water reducer, 0.2-0.5 part of retarder and 0.1-0.3 part of air entraining agent; the mixed material is formed by mixing and grinding 5-20% of phosphogypsum, 30-60% of fly ash or phosphorous slag, 15-30% of water-quenched slag and 10-20% of steel slag according to weight percentage; the water reducing agent comprises the following components in parts by weight: 30-40 parts of triethanolamine oleic acid soap-based polyacrylic acid copolymer, 10-15 parts of modified activated clay, 5-10 parts of 4-aminophenyl fucoside, 4-6 parts of polyether amine, 10-15 parts of isopropanol and 30-40 parts of water.
Preferably, the triethanolamine oleic acid soap-based polyacrylic acid copolymer is prepared by carrying out copolymerization reaction on triethanolamine oleic acid soap, (2R,3S,4S) -rel-2-carboxyl-4- (1-methylethenyl) -3-pyrrolidine acetic acid, sulfosuccinic acid-1- (2-propenyl) -4-tridecyl ester sodium salt and N-trimethylolpropane methacrylamide.
Preferably, the gypsum comprises hemihydrate gypsum and dihydrate gypsum, and the mass ratio of the hemihydrate gypsum to the dihydrate gypsum is 0-4.
Preferably, the exciting agent consists of polymethyl methacrylate microemulsion, triethanolamine, triisopropanolamine, redispersible latex powder, nano silicon dioxide, xanthan gum and defoaming agent according to the mass ratio of 1:0.5:0.8:3:0.2:0.3:0.1
Preferably, the retarder is a polymer containing carboxyl, phosphonic acid, sulfonic acid, hydroxycarboxylic acid (salt) or organic phosphonic acid (salt).
Preferably, the air entraining agent is one of wood resin salt, synthetic detergent, lignosulfonate or a mixture thereof.
The cement concrete activator can activate the activity of cement to a certain extent, ensures that the strength of the concrete is in a required range, has the effect of reducing the production cost of the concrete, and can generate certain economic benefit; and the performance of the excitant in improving the strength of concrete is good under the condition of not reducing the using amount of cement.
Detailed Description
The following are specific examples of the present invention and further describe the technical solutions of the present invention, but the present invention is not limited to these examples.
The concrete comprises the following components in parts by weight: 15-30 parts of mixed material, 10-15 parts of gypsum, 60-200 parts of sand, 0.2-0.5 part of excitant, 15-30 parts of water, 0.5-3 parts of water reducer, 0.2-0.5 part of retarder and 0.1-0.3 part of air entraining agent; the mixed material is formed by mixing and grinding 5-20% of phosphogypsum, 30-60% of fly ash or phosphorous slag, 15-30% of water-quenched slag and 10-20% of steel slag according to weight percentage; the water reducing agent comprises the following components in parts by weight: 30-40 parts of triethanolamine oleic acid soap-based polyacrylic acid copolymer, 10-15 parts of modified activated clay, 5-10 parts of 4-aminophenyl fucoside, 4-6 parts of polyether amine, 10-15 parts of isopropanol and 30-40 parts of water.
The cement concrete activator can activate the activity of cement to a certain extent, ensures that the strength of the concrete is in a required range, has the effect of reducing the production cost of the concrete, and can generate certain economic benefit; and the performance of the excitant in improving the strength of concrete is good under the condition of not reducing the using amount of cement.
The triethanolamine oleic acid soap-based polyacrylic acid copolymer is prepared by carrying out copolymerization reaction on triethanolamine oleic acid soap, (2R,3S,4S) -rel-2-carboxyl-4- (1-methylethenyl) -3-pyrrolidine acetic acid, sulfosuccinic acid-1- (2-propenyl) -4-tridecyl ester sodium salt and N-trimethylolpropane methacrylamide.
The gypsum comprises semi-hydrated gypsum and dihydrate gypsum, and the mass ratio of the semi-hydrated gypsum to the dihydrate gypsum is 0-4.
The excitant consists of polymethyl methacrylate microemulsion, triethanolamine, triisopropanolamine, redispersible latex powder, nano silicon dioxide, xanthan gum and defoaming agent according to the mass ratio of 1:0.5:0.8:3:0.2:0.3:0.1
The retarder is a polymer containing carboxyl, phosphonic acid group and sulfonic group, and hydroxycarboxylic acid (salt) or organic phosphonic acid (salt).
The air entraining agent is one or a mixture of wood resin salt, synthetic detergent and lignosulfonate.
The above is not relevant and is applicable to the prior art.
While certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing is illustrative only and is not limiting of the scope of the invention, as various modifications or additions may be made to the specific embodiments described and substituted in a similar manner by those skilled in the art without departing from the scope of the invention as defined in the appending claims. It should be understood by those skilled in the art that any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention are included in the scope of the present invention.