特细砂超高强高性能混凝土的配制技术

Preparing Technique of Super High StrengthHigh Performance Concrete with Superfine Sand

本文作者们认识到中、粗砂资源的匮乏，特细砂资源的丰富，以及未来建设工程对超高性能混凝土的需要，在国内外首先用特细砂制成了特细砂高性能混凝土，其塌落度最高达２５５ｍｍ，２８天抗压强度最高达１２６．８ＭＰａ，并与中砂超高性能混凝土进行了比较。

With the understanding that there will be a great demand for superhigh performance concrete (SHPC) in the future construction engineering,while the resources of coarse and intermediate sand commony used for SHPC are scarce,so it is very important to replace coarse and intermediate sand by plentiful superfine one; First in China and abroad as well a superfine sand superhigh performance concrete with max. slump 255mm and max.28d compressive strength 126.8 MPa was prepared.It was compared with superhigh performance concrete with intermediate sand.