CAJ | 학술논문

研究了碳硫硅钙石在不同阳离子(Na＋、Mg2＋)作用下的形成。将水泥-石灰石粉净浆试件分别置于5℃不同浓度的 Na2 SO 4和 MgSO 4溶液中，对腐蚀破坏部分取样进行 X 射线衍射、红外光谱分析。结果表明，试件在 Na2 SO 4和 MgSO 4溶液中均发生了碳硫硅钙石型硫酸盐腐蚀，并随着腐蚀时间的延长，其破坏不断加剧；试件浸泡在 Na2 SO 4溶液中，腐蚀产物以碳硫硅钙石为主，随着 Na2 SO 4浓度的增加，其破坏增加；浸泡在 MgSO 4溶液中，试件由表及里逐渐变为一种白色烂泥状物质，腐蚀产物以碳硫硅钙石和石膏为主，镁离子加速了碳硫硅钙石的形成。
연구료탄류규개석재불동양리자(Na＋、Mg2＋)작용하적형성。장수니-석회석분정장시건분별치우5℃불동농도적 Na2 SO 4화 MgSO 4용액중，대부식파배부분취양진행 X 사선연사、홍외광보분석。결과표명，시건재 Na2 SO 4화 MgSO 4용액중균발생료탄류규개석형류산염부식，병수착부식시간적연장，기파배불단가극；시건침포재 Na2 SO 4용액중，부식산물이탄류규개석위주，수착 Na2 SO 4농도적증가，기파배증가；침포재 MgSO 4용액중，시건유표급리축점변위일충백색란니상물질，부식산물이탄류규개석화석고위주，미리자가속료탄류규개석적형성。
Effects of different cations on the formation of thaumasite were studied in this paper.The cement-ground limestone paste specimens were immerged in sodium sulfate and magnesium sulfate solution with differ-ent concentrations,and the appearance of corroded pastes was observed.Besides,the corrosion products were also characterized by X-ray diffraction and infrared spectrum.The results showed that the specimens which were immerged in sodium sulfate and magnesium sulfate solution were damaged by thaumasite form of sulfate attack (TSA)badly and the damage condition became more and more serious as time evolved.The specimens im-merged in sodium sulfate solution,deteriorated seriously as concentration increased and the corrosion products were mainly thaumasite.The cement-ground limestone pastes immerged in magnesium sulfate solution gradual-ly became non-cementitious muddy material from the outside to the inside,and the corrosion products were mainly thaumasite and gypsum.Therefore,magnesium ion can accelerate thaumasite formation.