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Synergistic effect of triethanolamine on modification of polycarboxylate superplasticizer

Views:17     Author:su     Publish Time: 2018-08-09      Origin:Site Inquire

Synergistic effect of triethanolamine on modification of polycarboxylate superplasticizer

       Since the polycarboxylate water reducing agent can delay the hydration of the cement, the early strength development of the cement concrete is slow, which  limits the use of the polycarboxylate superplasticizer in precast concrete and cold weather buildings. In response to this problem, triethanolamine (TEA) and different  polycarboxylate superplasticizers were used for compound modification. The purpose of this study was to study the dispersibility of the modified superplasticizer on cement  dispersibility, setting time, cement block strength, etc. The impact of performance. Triethanolamine is a white viscous liquid with a slight ammonia smell. It is easily soluble  in water and ethanol. It is alkaline. Because triethanolamine has less dosage, less side effects, it has obvious effects on low temperature and early strength, and it has a certain post-  enhancement effect. Therefore, triethanolamine is selected as an early strengthening agent for compounding with a polycarboxylic acid water reducing agent. The addition of  triethanolamine to the polycarboxylate superplasticizer is compounded and modified, which has a great influence on the slurry dispersibility of the cement, the setting time, and the  strength of the cement block. Therefore, after the combination of TEA and polycarboxylate superplasticizer, the early strength of the cement test block is  significantly improved, the cement setting time is changed to some extent, and the cement dispersibility is slightly reduced. Polycarboxylate superplasticizer is favored by everyone  because of its small dosage, high water reduction rate and good compatibility with cement. One of the more important features is that it can add groups with different functions in  the main chain. Therefore, it Can be integrated into a variety of functions or have a certain performance to suit different purposes.

Triethanolamine 80%








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