机制砂对T梁用C50混凝土体积变形性能的影响研究

Study on the effect of volume stability for T beam concrete of C50 with manufactured sand

某高速公路建设过程中河砂资源匮乏,结合沿线石灰石资源,采用了机制砂代替河砂配制预应力T型梁用C50混凝土。从塑性开裂、收缩性能、及砂浆开裂敏感性方面研究了机制砂的影响,并成功应用于实际工程。

With the rich limestone resources and scarce river sand resources at a certain highway construction, we adopt manufactured sand instead of river sand to manufacture prestressed T beam concrete of C50. It study the mechanism of manufactured sand on plastic cracking, shrinkage property and cracking susceptibility of mortar, and the research result is successfully applied.