Antirust concrete water reducer and preparation method thereof

Abstract

The invention discloses an antirust concrete water reducer. The antirust concrete water reducer is prepared from the following raw materials by weight: 0.5 to 1 part of sodium petroleum sulfonate, 1 to 2 parts of tung oil, 2 to 4 parts of polyvinyl alcohol, 5 to 10 parts of hydrogen peroxide with a concentration of 20 to 30%, 0.3 to 0.5 part of hydroxyethylidene diphosphonic acid, 5 to 10 parts of hydrogen peroxide, 0.1 to 0.2 part of polysorbate-80, 40 to 50 parts of modified polycarboxylic acid mother liquor, 1 to 2 parts of hydroxypropyl guar gum, 2 to 4 parts of water-soluble lanolin and 40 to 50 parts of water. The water reducer has good compatibility with cement, is small in doping amount and high in a water reducing rate, can improve the bonding strength of cement and strengthen compression resistance and fracture resistance of concrete, shows antirust effect, exerts good protection effect on steel bars in concrete, is applicable to a reinforced concrete project with requirements on rust inhibition and has a high practical value.

Description

technical field [0001] The invention relates to the technical field of chemical additives, in particular to a rust-proof concrete water reducing agent and a preparation method thereof. Background technique [0002] Concrete water-reducing agent is one of the important products in the building materials industry. Adding water-reducing agent to the concrete mixture has a dispersing effect on the cement particles, which can improve the fluidity of the concrete mixture, reduce the unit cement consumption, save cement, and ensure the Workability and strength of concrete. At present, the commonly used water reducers mainly include lignosulfonates, naphthalene series water reducers and polycarboxylic acid series water reducers. Polycarboxylic acid-based superplasticizers have the advantages of high water-reducing rate, remarkable reinforcement effect, good workability of concrete, and environmental protection. They are the most promising superplasticizers in recent years. However...

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.