碎石砂的开发及应用

The Development and Application of Crushed Stone Sand

文章介绍了碎石砂（或称石屑）试配高标号混凝土及试产ＰＨＣ管桩的情况，结果表明：利用碎石砂替代黄砂，可以提高混凝土强度，改善混凝土和易性，生产的ＰＨＣ管桩达到ＧＢ１３４７６－１９９２［１］的要求。

This paper introduces a mixed High Strength Concrete (HSC) and its product PHC pipe piles made of crushed stone sand (or stone chip). The studies show that concrete strengh and concrete workability can be increased and improved by using crushed stone sand instead of yellow sand. The experiments indicate that the pipe piles of such ingrediants meet the requirements of GB13476.