聚羧酸高性能减水剂在蒙华铁路预制T梁中的技术应用
Technology Application of Polycarboxylate Superplasticizer in the Prefabricated T-Typed Beam of Menghua Railway
摘要:
本文结合蒙华铁路预制T梁外观质量情况，研究了聚羧酸高性能减水剂不同母液及小料对混凝土工作性、含气量、凝结时间、抗压强度等指标的影响，并通过混凝土实体外观对比，确定了最佳的减水剂复配方案。采用此方案成型的T梁外观颜色均一，气泡面积约占到整个表面积的5%之内，气泡最大尺寸仅1.5 mm。
Abstract:
In consideration of the appearance quality of prefabricated T-typed beam of Menghua Railway, this article studied the influences of polycarboxylate superplasticizer with different mother liquor and auxiliary material on the workability, gas content, setting time and compressive strength of concrete, and according to the concrete entity appearance, the optimum composition of formula of polycarboxylate superplasticizer was determined. The formed T-typed beam by this scheme had uniform color, and the area of the bubble accounted for about 5% of the whole surface area, and the maximum size of the bubble was only 1.5 mm.
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