铅污染黏土微观结构与变形强度特性

doi:10.13722/j.cnki.jrme.2014.s2.107

Abstract
Figure/Table
References (15)
Related Citation (15)

Download: PDF (1729 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract The microstructure and deformation properties of clay was affected by the migration of Pb2+ chemical solution. In order to investigate surface morphology and pore structure of polluted clay by Pb2+ pollutant，the scanning electron microscope(SEM) test and low-temperature N2 adsorption test were carried out. The results of microstructure tests show that pore of undisturbed clay is small. The soil particles are mainly lamination arrangement. Pore size of polluted clay is mainly near 10 nm，and secondary pore increases. The arrangement of soil particles transformed lamination to point-point under chemical solution. A series of tests are conducted，unconfined compressive strength test，direct shear test and consolidation test，to research deformation properties of polluted clay. The unconfined compressive strength，shear strength and consolidation properties of undisturbed clay were affected obviously by Pb2+ chemical solution. The unconfined compressive strength of polluted clay decreased with increasing of Pb2+ pollutant concentration. The shear strength index(c，) of polluted clay decreased with an increase of Pb2+ pollutant concentration. As Pb2+ pollutant concentration increased，void ratio(e) of polluted clay increased，compressibility coefficient() and compression index() increased，but compression modulus() decreased.

Key words： soil mechanics polluted clay microstructure compressive strength compression modulus

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	LU Haijun1
	LIAO Zhuwei1
	WANG Qi1
	ZHAO Ying2
	CHEN Wei1

Cite this article:

LU Haijun1,LIAO Zhuwei1,WANG Qi1, et al. MICROSTRUCTURE AND DEFORMATION PROPERTIES OF POLLUTED CLAY BY Pb2+ CHEMICAL SOLUTION[J]. , 2014, 33(S2): 4252-4257.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.s2.107 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/IS2/4252

[1]	龙新宪，杨肖娥，倪吾钟. 重金属污染土壤修复技术研究的现状与展望[J]. 应用生态学报，2002，13(6)：757-762.(LONG Xinxian，YANG Xiaoe，NI Wuzhong. Current situation and prospect on the remediation of soils contaminated by heavy metals[J]. Chinese Journal of Applied Ecology，2002，13(6)：757-762.(in Chinese))
[2]	SERRANTI S，BONIFAZI G. Pollution level detection in dump clay liners by hyperspectral imaging[J]. International Journal of Environmentand Waste Management，2012，10(2/3)：163-176.
[3]	TENNAKOON N，INDRARATNA B，NIMBALKAR S，et al. Deformation and degradation of clay fouled ballast subjected to monotonic loading[C]// Proceedings of the International Conference on Ground Improvement and Ground Control. Singapore：Research Publishing，2012：1521-1528.
[4]	NAYAK S，SUNIL B M，SHRIHARI S. Hydraulic and compaction characteristics of leachate-contaminated lateritic soil[J]. Engineering Geology，2007，94(3/4)：137-144.
[5]	ABDULHADI N O，GERMAINE J T，WHITTLE A J. Stress-dependent behavior of saturated clay[J]. Canadian Geotechnical Journal，2012，49(8)：907-916.
[6]	闫鹏峰，孙英杰，郭庆园，等. 电动修复技术处理铬污染黏土试验研究[J]. 青岛理工大学学报，2012，33(2)：93-97.(YAN Pengfei，SUN Yingjie，GUO Qingyuan，et al. Study of remediation for chromium-polluted clay with electrokinetics[J]. Journal of Qingdao Technological University，2012，33(2)：93-97.(in Chinese))
[7]	ANIRUDHAN T S，JALAJAMONY S，SREEKUMARI S S. Adsorptionof heavy metal ions from aqueous solutions by amine and carboxylate functionalised bentonites[J]. Applied Clay Science，2012，65/66：67-71.
[8]	查甫生，刘晶晶，崔可锐，等. 水泥固化稳定重金属污染土的工程性质试验研究[J]. 工业建筑，2012，42(11)：79-82.(ZHA Fusheng，LIU Jingjing，CUI Kerui，et al. Engineering properties of solidified andstabilized heavy metal contaminated soils with cement[J]. IndustrialConstruction，2012，42(11)：79-82.(in Chinese))
[9]	ANDRÁŠA P，TURISOVÁA I，KRNÁ? J，et al. Hazards of heavy metal contamination at L¢ubietová Cu-deposit[J]. Procedia Environmental Sciences，2012，14：3-21.
[10]	KATSUMI T，ISHIMORI H，ONIKATA M，et al. Long-term barrier performance of modified bentonite materials against sodium and calcium permeant solutions[J]. Geotextiles and Geomembranes，2008，26(1)：14-30.
[11]	魏明俐，杜延军，张帆. 水泥固化锌污染黏土的压缩特性试验研究[J]. 土木工程学报，2011，44(增)：165-168.(WEI Mingli，DU Yanjun，ZHANG Fan. Compressibilityof cement solidified/stabilized zinc contaminated soils[J]. China Civil Engineering Journal，2011，44(Supp.)：165-168.(in Chinese))
[12]	江贻满，段钰锋，杨祥花，等.ESP飞灰对燃煤锅炉烟气汞的吸附特性[J]. 东南大学学报：自然科学版，2007，37(3)：436-440.(JIANG Yimang，DUAN Yufeng，YANG Xianghua，et al. Adsorption characterization of coal fired flue gas mercury by ESP fly ashes[J]. Journal of Southeast University：Natural Science，2007，37(3)：436-440.(in Chinese))
[13]	范云鸽，李燕鸿，马建标. 交联聚苯乙烯型多孔吸附剂的中孔性质研究[J]. 高等学校化学学报，2002，23(8)：1622-1626.(FAN Yunge，LI Yanhong，MA Jianbiao. Mesoporous properties of porous crosslinked polystyrene absorbents[J]. Chemical Research ofChinese Universities，2002，23(8)：1622-1626.(in Chinese))
[14]	查甫生，许龙，崔可锐. 水泥固化重金属污染土的强度特性试验研究[J]. 岩土力学，2012，33(3)：652-656.(ZHA Fusheng，XU Long，CUI Kerui. Strength characteristics of heavy metal contaminatedsoils stabilized/solidified by cement[J]. Rock and Soil Mechanics，2012，33(3)：652-656.(in Chinese))
[15]	杜延军，金飞，刘松玉，等. 重金属工业污染场地固化/稳定处理研究进展[J]. 岩土力学，2011，32(1)：116-124.(DU Yanjun，JIN Fei，LIU Songyu，et al. Review of stabilization/solidification technique for remediation of heavy metals contaminated lands[J]. Rock and Soil Mechanics，2011，32(1)：116-124.(in Chinese))