盐湖地区镁水泥钢筋混凝土耐久性试验

青海省众多煤矿矿区普遍存在盐渍土，混凝土耐久性问题极为突出，格尔木盐湖地区最为典型。将镁水泥钢筋混凝土梁试件放置于察尔汗盐湖现场进行暴露试验，根据试件的钢筋的锈蚀情况、相对质量、相对动弹性模量及裂缝与变形来研究镁水泥钢筋混凝土在盐湖地区复杂条件作用下的耐久性问题。研究发现：镁水泥混凝土的抗腐蚀性能优越，变形性能与普通混凝土一致，且达克罗涂层有良好的防腐效果；镁水泥钢筋混凝土在盐湖地区耐久性研究，为地处盐渍土地区的煤矿矿区基础设施建设提供有力保障。

Durability of magnesium cement reinforced concrete in saline soil area

Saline soil region are widely distributed in Qinghai Province，China and many coal mining areas are mainly covered with saline soil.Thus，the durability of concrete is very prominent，especially in Golmud salt lake area.In this study，the magnesium cement reinforced concrete beam specimens were exposed in the vicinity of Salt Lake.Based on the relative quality of the specimens，the relative dynamic elastic modulus，and the deformation and cracks corroded steel，the concrete durability were studied.The results show that the corrosion resistance of magnesium cement concrete is superior，the deformation property is consistent with ordinary concrete，and the anticorrosion performance of DACROMET coating steel bar is good.The research on the durability of magnesium cement reinforced concrete in the Salt Lake area provides a guarantee for mining infrastructure construction.