Affiliation:
1. College of Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2. College of Architecture, Taiyuan University of Technology, Taiyuan 030024, China
Abstract
To explore the effects of the introduction order of calcium sources and the bacteria-to-calcium ratio on the microbially induced calcium carbonate precipitation (MICP) product CaCO3 and to achieve the regulation of CaCO3 crystal morphology, the mineralisation products of MICP were compared after combining bacteria and calcium at ratios of 1/9, 2/9, 3/9, 4/9, 5/9, and 6/9. A bacterial solution was combined with a urea solution in two calcium addition modes: calcium-first and calcium-later modes. Finally, under the calcium-first addition method, the output of high-purity vaterite-type CaCO3 was achieved at bacteria-to-calcium ratios of 2/9 and 3/9; under the calcium-later addition method, the output of calcite-type CaCO3 could be stabilised, and the change in the bacteria-to-calcium ratio did not have much effect on its crystalline shape.
Funder
the key research project of Shanxi Province: “Research on Mechanism and multi-scale properties of microbial mineralisation repair of concrete damaged by fire”
Technology Project of Cultural Relics in Shanxi, “Research on Disease Development Mechanism and Restoration Technology of Earthen Sites in Jinyang Ancient City”
Shanxi Province Basic Research Project, “Research on Mechanisms and techniques for repairing fissure diseases at rammed earth sites induced by plant root splitting”
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献