摘要：水泥混凝土外加剂在我国公路工程中的使用十分广泛，尤其是在技术难度大、质量要求高的桥、涵、隧道和路面工程结构中，外加剂能起到改善水泥混凝土的性能的作用。但是外加剂的使用不当也容易导致严重的质量事故。因此必须根据实际要求，科学合理地使用各类外加剂。本文主要介绍了常用外加剂的种类及应用技术。
开路电压关键词：水泥混凝土；减水剂；引气剂；缓凝剂；早强剂
中图分类号：刷式密封tu528.45 文献标识码：a文章编号：
过氧化氢浓度测定>地铁门abstract: cement concrete admixtures in our country are very extensive useable of the highway engineering, especially in technical difficulties, high quality requirements of the bridge, and tunnel and pavement culverts, engineering structure, admixture can rise to improve the performance of the role of cement concrete. but the improper use of admixture is easy to cause serious quality accident. so it must according to the practical demands, science reasonable use of various admixtures. this article mainly introduced the common types of admixture and application technology.
电梯井口门
key words: cement concrete; water reducing agent; air-entraining agent; retarder; early strength agent
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