摘要
本课题将钢渣、矿渣以及石灰,在固定的水灰比下搅拌均匀,并在10MPa的压力下压制成型,放入密闭容器中,通入95%的CO2气体但采用不同的CO2压力进行碳化。试验证明,阶梯递增的CO2压力下碳化后的钢渣表面生长着大量簇生的碳酸钙晶体,强度大幅度提高,安定性明显改善。因此,与单一的CO2压力相比,使用阶梯递增的CO2压力更有利于碳化。
In order to study the reasonable application of steel slag in pervious concrete,the steel slag aggregate is pre cured by carbonation.XRD and SEM were used to observe the mineral composition and micro morphology of the aggregate surface,and the aggregate bulk density,water absorption,porosity and crushing index were tested.The effect of carbonated steel slag aggregate on the working performance,mechanical properties and durability of pervious concrete is studied,and the reasonable content of carbonated steel slag aggregate in pervious concrete is observed.
作者
吴昊泽
徐东宇
Wu Haoze;Xu Dongyu(Cement Quality Supervision and Inspection Station of Shandong Province,Jinan 250022;Key Laboratory of Construction Material Preparation and Testing Technology of Shandong Province,University of Jinan,Jinan 250016)
出处
《商品混凝土》
2020年第7期28-31,共4页
Ready-Mixed Concrete
基金
国家重点研发计划(2017YFE0120900)
山东省自然科学基金(ZR2017JL023)
关键词
钢渣
碳化养护
建筑材料
carbonation
steel slag aggregate
construction material
