Lee Jun Cheol, Lee Chang Joon, Chun Woo Young, Kim Wha Jung, Chung Chul-Woo
School of Architecture and Civil Engineering, Kyungpook National University, Daegu 702-701, Republic of Korea.
Department of Architectural Engineering, Chungbuk National University, Cheongju 362-763, Republic of Korea.
J Microbiol Biotechnol. 2015 Aug;25(8):1328-38. doi: 10.4014/jmb.1411.11037.
Years of research have shown that the application of microorganisms increases the compressive strength of cement-based material when it is cured in a culture medium. Because the compressive strength is strongly affected by the hydration of cement paste, this research aimed to investigate the role of the microorganism Sporosarcina pasteurii in hydration of cement paste. The microorganism's role was investigated with and without the presence of a urea-CaCl2 culture medium (i.e., without curing the specimens in the culture medium). The results showed that S. pasteurii accelerated the early hydration of cement paste. The addition of the urea-CaCl2 culture medium also increased the speed of hydration. However, no clear evidence of microbially induced calcite precipitation appeared when the microorganisms were directly mixed with cement paste.
多年的研究表明，当在培养基中养护时，微生物的应用会提高水泥基材料的抗压强度。由于抗压强度受水泥浆体水化的强烈影响，本研究旨在探究嗜盐芽孢杆菌在水泥浆体水化中的作用。在有无尿素 - 氯化钙培养基的情况下（即不在培养基中养护试件）研究了该微生物的作用。结果表明，嗜盐芽孢杆菌加速了水泥浆体的早期水化。添加尿素 - 氯化钙培养基也提高了水化速度。然而，当微生物直接与水泥浆体混合时，没有明显的微生物诱导方解石沉淀的证据。
