Bacteriostatic anticorrosive composite polycarboxylate superplasticizer, and preparation method thereof

Abstract

The invention discloses a bacteriostatic anticorrosive composite polycarboxylate superplasticizer. The bacteriostatic anticorrosive composite polycarboxylate superplasticizer is prepared from the following raw materials by weight: 3 to 5 parts of konjac gum, 2 to 4 parts of polyvinyl alcohol, 5 to 10 parts of hydrogen peroxide with a concentration of 20 to 30%, 0.2 to 0.4 parts of dodecyltrimethylammonium chloride, 0.3 to 0.5 part of glycerol monocaprylate, 0.1 to 0.2 part of polysorbate-80, 40 to 50 parts of modified polycarboxylate mother liquor, 1 to 2 parts of polyethylene glycol, 2 to 4 parts of sodium hexametaphosphate and 40 to 50 parts of water. The polycarboxylate superplasticizer has good compatibility with cement, is small in doping amount and high in a water reducing rate, can improve the bonding strength of cement, strengthen the compression resistance and fracture resistance of concrete and inhibit growth and propagation of bacteria and mildew, effectively prevents deterioration, enables storage time to be long, and has a high practical value.

Description

technical field [0001] The invention relates to the technical field of chemical additives, in particular to an antibacterial and antiseptic polycarboxylic acid composite water reducer and a preparation method thereof. Background technique [0002] Concrete water reducer is one of the important products in the building materials industry. Adding water reducer to the concrete mixture can disperse the cement particles, improve the fluidity of the concrete mixture, reduce the amount of cement per unit, save cement, and ensure Workability and strength of concrete. At present, the commonly used water reducers mainly include lignin sulfonate, naphthalene water reducer and polycarboxylate water reducer. Polycarboxylate superplasticizer has the advantages of high water reducing rate, remarkable reinforcement effect, good workability of concrete, and environmental protection. It is the most promising superplasticizer in recent years. However, in the actual use of concrete engineerin...

AI Technical Summary

Problems solved by technology

However, in the actual use of concrete engineering, the polycarboxylate water reducer has a problem of compatibility with cement, and its use effect is greatly affected by the composition of cement.

Especially when it contains clay and other ingredients, due to the interlayer adsorption effect of clay, it has a serious impact on the water-reducing and dispersing performance of polycarboxylate superplasticizers, which reduces the working performance of concrete and restricts the wide application of polycarboxylate superplasticizers. And development

Moreover, at present, the development of domestic polycarboxylate water reducer products is not yet mature, and there are few varieties, which are difficult to meet the functional and diversified market demand, and further development and improvement are needed.