'Microbial mortar'-restoration of degraded marble structures with microbially induced carbonate precipitation
'Microbial mortar'-restoration of degraded marble structures with microbially induced carbonate precipitation
复制标题
“微生物砂浆”——用微生物诱导的碳酸盐沉淀修复退化的大理石结构
DOI：
10.1016/j.conbuildmat.2018.05.200
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发表时间：
2018-08-20
影响因子：
7.4
通讯作者：
Cheng, Xiaohui
中科院分区：
文献类型：
--
作者：
Minto, James M.;Tan, Qian;Cheng, Xiaohui
为了评估高度降解大理岩结构的修复策略，采用微生物诱导碳酸盐沉淀（MICP）来降低填充粗碎大理岩柱的孔隙度和渗透率。3D x射线断层扫描显示了整个储层孔隙度的空间变化，并在处理过程中间隔记录了示踪剂突破曲线，从而推导出岩心尺度的流体输运性质及其由沉淀碳酸盐引起的变化。基于x射线数据的微连续尺度流动模型表明，处理导致孔隙网络结构发生变化，流动越来越集中到数量更少、流动更快的开放通道中。(C) 2018年作者。Elsevier Ltd.出版。
To evaluate a restoration strategy for highly degraded marble structures, microbially induced carbonate precipitation (MICP) has been employed to reduce porosity and permeability in a column filled with coarse crushed marble. A 3D X-ray tomography scan revealed the spatial variation in porosity throughout the column and tracer breakthrough curves, recorded at intervals during treatment, enabled derivation of core-scale fluid transport properties and their alteration by precipitating carbonate. Micro-continuum scale flow modelling based on the X-ray data indicated that treatment led to changes in the pore network structure with flow increasingly focused into a smaller number of faster flowing open channels. (C) 2018 The Authors. Published by Elsevier Ltd.