CAJ | 학술논문

众多研究表明，微生物诱导碳酸盐沉积技术可应用于改善混凝土材料内部结构，从而提高其物理性能。试验研究了镁盐对含微生物水泥净浆的抗压强度、吸水率、裂缝愈合等性能的影响，并采用X射线衍射技术对矿化产物进行成分分析。结果表明，营养液中镁盐的掺入使含微生物的普通硅酸盐水泥净浆和硫铝酸盐水泥净浆的抗压强度增加，吸水率下降，裂缝处形成一条连续、饱满的矿物填充带；矿化沉淀中除方解石型碳酸钙外，还形成了额外的菱镁矿型碳酸镁，从而促进了水泥净浆中微生物的矿化作用。
음다연구표명，미생물유도탄산염침적기술가응용우개선혼응토재료내부결구，종이제고기물이성능。시험연구료미염대함미생물수니정장적항압강도、흡수솔、렬봉유합등성능적영향，병채용X사선연사기술대광화산물진행성분분석。결과표명，영양액중미염적참입사함미생물적보통규산염수니정장화류려산염수니정장적항압강도증가，흡수솔하강，렬봉처형성일조련속、포만적광물전충대；광화침정중제방해석형탄산개외，환형성료액외적릉미광형탄산미，종이촉진료수니정장중미생물적광화작용。
The researches in recent years indicate that the technology of carbonate precipitation inducing by microorganism can be used to ameliorate the internal structure of concrete materials, thus heightening its physical property. In this paper, the influ-ence of magnesium salt on compressive strength, water absorption ratio and crack filling of cement paste containing microorganism was researched, and the X-ray diffraction method was performed to analyze the components of precipitation. The results indicate that the addition of magnesium in the immersion solutions increased compressive strength and decreased water absorption ratio for both the sulpho-aluminate cement paste and the ordinary silicate cement paste that contain microorganism, and also a plump mineral filling belt was formed in the crack. The mineralization precipitation contains both calcite carbonate and magnesia carbon-ate and the later is really rare, which can promote the mineralization process of cement paste containing microorganism.