[1]贾强,陈晓翰,孙增斌,等.微生物诱导沉积碳酸钙提高产量的试验研究[J].山东建筑大学学报,2015,(5):423-428.
 Jia Qiang,ChenXiao-han,SunZeng-bin,et al.The raising calcite yield experiment for bacteria induced precipitation[J].Journal of Shandong jianzhu university,2015,(5):423-428.
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微生物诱导沉积碳酸钙提高产量的试验研究()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
期数:
2015年5期
页码:
423-428
栏目:
研究论文
出版日期:
2015-10-15

文章信息/Info

Title:
The raising calcite yield experiment for bacteria induced precipitation
作者:
贾强1 陈晓翰1 孙增斌2 邢建2
1.山东建筑大学 土木工程学院;2.山东建大工程鉴定加固研究所
Author(s):
Jia Qiang 1 ChenXiao-han1 SunZeng-bin2 XingJian2
School of Civil Engineering , Shandong Jianzhu University;2. Shandong JianDa institute of Appraisal and Retrofitting in Building Structures
关键词:
混凝土裂缝碳酸钙菌液
Keywords:
concrete cracks calcium carbonate deposition bacteria
分类号:
TU996
文献标志码:
A
摘要:
微生物灌浆封堵混凝土裂缝具有渗透性好、生成物性质稳定和结合性好等优点。微生物诱导碳酸钙沉积物的产量成为影响裂缝修复效果的重要因素。文章通过对比试验,研究了营养液浓度、钙源溶液种类、钙源浓度和尿素加入方式对微生物诱导碳酸钙产量的影响规律。结果表明:尿素溶液浓度为3 mol/L,钙源溶液采用硝酸钙浓度为2 mol/L,或采用氯化钙时浓度为3 mol/L,单位体积溶液内碳酸钙沉淀物产量分别为0.11 g/ml和0.12 g/ml。菌液中提前60min加入尿素10min的碳酸钙产量是不提前加入尿素产量的5.6倍,有效提高了碳酸钙的早期产量,有利于实现裂缝的快速封堵;采用优化组的灌浆比未优化组的灌浆次数明显减少。
Abstract:
The remediation of concrete cracks by bacterially induced calcium carbonate deposition has advantages of high permeability, stable products and associatively. An important parameter for repair efficiency is the yield of calcite precipitated. The comparison experiments were performed to investigate the optimal parameters of raising calcite yield, which was selected to the comparison experiment of concrete cracks remediation by bacterially grouting . The results of the test show that when the CN2H4O solution concentration of 3% and the Ca(NO3)2 solution concentration of 2%, or the Cacl2 solution concentration of 3%, the calcium carbonate deposition of unit volume is 0.11 g/ml or 0.12g/ml which reaches highest yield. When the CN2H4O added to the bacteria earlier, the quality of calcium carbonate deposition is 5.6 times which acquired in early stage. The comparison experiment of concrete cracks remediation by bacterially grouting shows that the group selected optimal parameters with less grouting frequency.
更新日期/Last Update: 2015-09-21