框架桥防水护层材料的试验研究

Experimental Investigation of Proofing Concrete Layer on Frame Bridge

推进式混凝土整体框架桥顶面护层要求高抗折和高抗渗。本文用５２５＃普硅水泥、小粒径卵石、二区中砂等原材料，采用钢纤维增强、外加剂减水和内掺超细矿粉等措施，成功地配制了用于框架桥混凝土防水护层材料。

A high performance proofing concrete layer is necessary for a push seton frame bridge which is designed as an underway across a railroad to defend oneself against permeability of water and destruction by pushing setting.With 525# Portland cement,fine gravel and median sand as main raw materials,reinforced by steel fiber,reduced water by superplastisizer and blended with superfine mineral powder,this kind of proofing layer concrete was prepared sucessfully.