混凝土与水泥制品
混凝土與水泥製品
혼응토여수니제품
China Concrete and Cement Products
2015年
10期
20-23
,共4页
水泥矿物组成%碳硫硅钙石%Al相
水泥礦物組成%碳硫硅鈣石%Al相
수니광물조성%탄류규개석%Al상
Mineral composition of cement%Thaumasite%Aluminum phase
通过外观变化、砂浆强度、XRD及SEM- EDS分析等技术，研究了两种不同矿物组成的水泥对掺石灰石粉水泥砂浆经温度为5℃、质量分数为5%的MgSO4溶液侵蚀后碳硫硅钙石形成的影响。结果表明，Al相含量越多，生成的碳硫硅钙石越多，侵蚀越严重。通过对水泥矿物组成进行合理优化，可以提高混凝土抗TSA侵蚀能力，提高其耐久性。
通過外觀變化、砂漿彊度、XRD及SEM- EDS分析等技術，研究瞭兩種不同礦物組成的水泥對摻石灰石粉水泥砂漿經溫度為5℃、質量分數為5%的MgSO4溶液侵蝕後碳硫硅鈣石形成的影響。結果錶明，Al相含量越多，生成的碳硫硅鈣石越多，侵蝕越嚴重。通過對水泥礦物組成進行閤理優化，可以提高混凝土抗TSA侵蝕能力，提高其耐久性。
통과외관변화、사장강도、XRD급SEM- EDS분석등기술，연구료량충불동광물조성적수니대참석회석분수니사장경온도위5℃、질량분수위5%적MgSO4용액침식후탄류규개석형성적영향。결과표명，Al상함량월다，생성적탄류규개석월다，침식월엄중。통과대수니광물조성진행합리우화，가이제고혼응토항TSA침식능력，제고기내구성。
The effect of two different mineral compositions on the thaumasite formation of cement pastes containing limestone powder was investigated. The samples were cured in 5% MgSO4 solution at 5℃. It was analyzed by appearance erosion change, X-ray diffraction, mortar strength, scanning electron microscopy and energy disperse spectroscopy. The re-sults show that more aluminum phase will lead to form more thaumasite. By optimizing the mineral composition of cement reasonably, the concrete can enhance the ability of resisting the thaumasite form of sulfate attack.
