水利学报2017，Vol.48Issue(12)：1447-1455,9.DOI:10.13243/j.cnki.slxb.20170648
沼蛤侵蚀对混凝土的性能损伤试验研究
Experimental study on concrete deterioration caused by Limnoperna fortunei fouling
摘要
Abstract
The concrete performance changes caused by L.fortunei fouling has important reference significance on decision and selection of anti-fouling measures.To study the micro performance changes caused by L.fortunei fouling of the homemade specimens colonized by L.fortunei for one year and the cores from the zones colonized by L.fortunei for more than 20 years,indexes of water absorption,pore characteristics and distribution,surface morphology,element composition,and calcium minerals were compared by water absorption method,mercury intrusion method,environment scanning electron microscope method and thermogravimetry method.Quantitative analysis indicated that the pores of different sizes increased,resulting in bulk density decreased by 13.5％ (colonized for one year) and 19.5％ (colonized for more than 20 years)respectively,and water absorption increased by 82％ (colonized for one year) and 101％ (colonized for more than 20 years) respectively.Concentrations of aluminium,manganese and iron increased whereas calcium especially calcium carbonate concentration decreased by 41.7％ (colonized for one year) and 82％ (colonized for more than 20 years) respectively as a consequence of the mussel colonization.Therefore,the colonization of L.fortunei can cause micro-properties deterioration of concrete.The longer the colonization period,the worse the performance deterioration.关键词
沼蛤/性能损伤/吸水率/孔隙特征/表层形貌/钙成分Key words
Limnoperna fortunei/concrete deterioration/absorption/pore characteristic/surface morphology/calcium ingredient分类
建筑与水利引用本文复制引用
姚国友,徐梦珍,安雪晖,严振瑞,秦晓川..沼蛤侵蚀对混凝土的性能损伤试验研究[J].水利学报,2017,48(12):1447-1455,9.基金项目
广东省水利科技创新项目(2015-03) （2015-03）
国家自然科学基金青年基金(51409146) （51409146）
中国科协“青年人才托举工程”项目(YESS20150071) （YESS20150071）
