微生物诱导碳酸钙沉积固化建筑渣土抗风蚀扬尘影响因素的试验研究

刘忠; 肖水明; 刘飞飞; 龙文梁; 张敏霞

doi:10.13204/j.gyjzG22070609

微生物诱导碳酸钙沉积固化建筑渣土抗风蚀扬尘影响因素的试验研究

doi: 10.13204/j.gyjzG22070609

1. 深圳市市政工程总公司, 广东深圳 518000;
2. 河南理工大学土木工程学院, 河南焦作 454150

基金项目:

国家自然科学基金项目(51580166)

河南理工大学骨干教师项目(2017GGJSS054)。

详细信息

作者简介:
刘忠,男,1978年出生,高级工程师。

通讯作者:
张敏霞,女,1979年出生,博士,教授,zhangminxia@126.com。

计量
- 文章访问数: 58
- HTML全文浏览量: 9
- PDF下载量: 0
- 被引次数: 0
出版历程
- 收稿日期: 2022-07-06

Experimental Study on Influence Factors of Anti-Wind Erosion and Anti-Dust for Construction Debris Cemented by MICP

1. Shenzhen Municipal Engineering Corporation, Shenzhen 518000, China;
2. School of Civil Engineering, Henan Polytechnic University, Jiaozuo 454150, China

摘要

摘要: 为研究钙源、胶结液浓度、菌液浓度、温度和胶结液pH值等对微生物诱导碳酸钙沉积(MICP)固化渣土抗风蚀和扬尘的影响,开展了单因素正交MICP固化建筑渣土试验和风洞试验,同时辅以X射线三维显微镜和X射线衍射等微观手段。试验结果表明:以氯化钙为钙源,胶结液浓度为0.5 mol/L,菌液浓度(OD₆₀₀值)为4.0,温度为20~40 ℃,中性或弱碱性环境下MICP固化建筑渣土抗风蚀效果教佳;MICP固化建筑渣土的易溶盐含量和pH值最大增幅分别为0.92%和0.20,MICP固化建筑渣土兼具环境友好的特性。
- 微生物诱导生成碳酸钙 /
- 建筑渣土 /
- 抑尘 /
- 影响因素 /
- 微观机理
Abstract: In order to systematically study the effect of calcium sources, cementitious solution concentrations, bacteria liquid concentrations, temperatures and pH values of microbial cementitious liquids on the resistance capacity of fugitive dust and wind erosion of construction debris cemented by microbial induced calcite precipitation (MICP), single-factor orthogonal tests cemented construction debris by MICP and wind tunnel tests were conducted, assisted by SEM and XRD microscopic methods. The test results showed that using calcium chloride as a calcium source, the concentration of the cementitious solution was 0.5 mol/L, the concentration of the bacterial liquid (OD₆₀₀) was 4.0, the temperature was 20 to 40 ℃, and the resistance effect of wind erosion for construction debris cemented by MICP in the neutral or weakly alkaline environment was better. The maximum increments of the soluble salt content and the pH value in construction debris cemented by MICP were 0.92% and 0.20 respectively,and the method to cement construction debris by MICP was of the advantage of environmental friendliness.
- microbial induced calcite precipitation /
- construction debris /
- dust suppression /
- influence factor /
- microscopic mechanism

HTML全文

参考文献(23)

[1]	DOUGLAS W, DOCKERY C A P X. An association between air pollution and mortality in six U.S. cities[J]. The New England Journal of Medicine, 1993, 329(24):1753-1759.
[2]	PRYOR S C, SIMPSON R, GUISE-BAGLEY L, et al. Visibility and aerosol composition in the fraser valley during reveal[J]. Journal of the Air & Waste Management Association. 1997, 47(2):147-156.
[3]	田延振. 工地建筑扬尘对大气污染的影响及其防治对策[J]. 环境与发展, 2018, 30(11):69-72.
[4]	YAN W, HOEKMAN S. Dust suppression with glycerin from biodiesel production:a review[J]. Journal of Environmental Protection, 2012,3:218-224.
[5]	江召兵,张倩,杨峰,等. 施工工地扬尘治理工程技术概述[J]. 资源节约与环保, 2019(2):52-53.
[6]	薛丹,刘小彬. 深圳市裸土地扬尘污染治理成效与提升对策[J]. 环境科学导刊, 2019, 38(5):66-70.
[7]	NAEIMI M, CHU J. Comparison of conventional and bio-treated methods as dust suppressants[J]. Environmental Science and Pollution Research, 2017, 24(29):23341-23350.
[8]	TIAN K, WU Y, ZHANG H, et al. Increasing wind erosion resistance of aeolian sandy soil by microbially induced calcium carbonate precipitation[J]. Land Degradation & Development, 2018, 29(12):4271-4281.
[9]	ZHAN Q, QIAN C, YI H. Microbial-induced mineralization and cementation of fugitive dust and engineering application[J]. Construction and Building Materials, 2016, 121:437-444.
[10]	高玉峰,杨恩杰,何稼. 基于微生物诱导碳酸钙沉积的防风固沙试验研究[J]. 河南科学, 2019, 37(1):144-150.
[11]	BANG S C, MIN S, BAO S. Application of microbiologically induced soil stabilization technique for dust suppression[J]. International Journal of Geo-Engineering, 2011, 3(2):27-37.
[12]	MEYER F D,BANG S,MIN S,et al. Microbiologically-induced soil stabilization:application of sporosarcina pasteurii for fugitive dust control[C]//Geo-Frontiers Congress. 2011:4002-4011.
[13]	WANG Z, ZHANG N, DING J, et al. Experimental study on wind erosion resistance and strength of sands treated with microbial-induced calcium carbonate precipitation[J]. Advances in Materials Science and Engineering, 2018. DOI: 10.1155/2018/3463298.
[14]	OLIVEIRA P J V, FREITAS L D, CARMONA J O P S. Effect of soil type on the enzymatic calcium carbonate precipitation process used for soil improvement[J]. Journal of Materials in Civil Engineering,2017,29(4). DOI: 10.1061/(ASCE)MT.1943-5533.0001804.
[15]	明道贵,邱明喜,殷立静,等. 钙源对微生物固化风积沙效果影响的试验研究[J]. 人民黄河, 2020, 42(4):85-88 , 111.
[16]	中华人民共和国水利部. 土工试验方法标准:GB/T 50123-2019[S]. 北京:中国计划出版社, 2019.
[17]	SONG H, ZHANG K, PIAO S, et al. Spatial and temporal variations of spring dust emissions in northern China over the last 30 years[J]. Atmospheric Environment,2016,126. DOI: 10.1016/j.atmosenv.2015.11.052.
[18]	JIANG L, XIAO Y, ZHENG H, et al. Spatio-temporal variation of wind erosion in Inner Mongolia of China between 2001 and 2010[J]. China Geogiaphical Science, 2016,26(2):155-163.
[19]	王雅倩. 基于风洞实验的裸露农田土壤PM10和PM2.5起尘特征研究[D]. 天津:天津师范大学, 2019.
[20]	石俊汇,张明远,赵芳芳. 平原县风沙区的水土流失与防治对策[J]. 中国水土保持, 2012(2):61-62.
[21]	中华人民共和国国家质量监督检验检疫总局. 水质钙的测定EDTA滴定法:GB 7476-87[S]. 北京:中国标准出版社, 1987.
[22]	彭劼,温智力,刘志明,等. 微生物诱导碳酸钙沉积加固有机质黏土的试验研究[J]. 岩土工程学报, 2019, 41(4):733-740.
[23]	SOON N W, LEE L M, KHUN T C, et al. Factors affecting improvement in engineering properties of residual soil through microbial-induced calcite precipitation[J]. Journal of Geotechnical and Geoenvironmental Engineering, 2014, 140(5):1-11.