长江科学院院报2018，Vol.35Issue(4)：54-59,6.DOI:10.11988/ckyyb.20161179
江西省大中型混凝土水库大坝溶出性侵蚀调查研究
Investigation on Dissoluble Erosion of Large-and-Medium-Sized Concrete Dams in Jiangxi Province
摘要
Abstract
The dissoluble erosion of concrete affects the stability and safety of dams seriously.In this research,concrete's dissoluble erosion of 35 dams in Jiangxi province was analyzed systematically by means of field survey,water and precipitate sampling and analyzing.Results show that the large and medium-sized dams in Jiangxi Province suffered from erosion of different levels,and the ambient water with low concentration of HCO32-is an important factor which leads to the corrosion of concrete.When dams are exposed to water of low HCO32-concentration,the composition,mix proportion,construction quality and curing time of concrete play critical roles in preventing the dam from dissoluble erosion.Though the dams have been reinforced in recent years,some of them are still suffering from severe dissoluble erosion.Therefore,in-depth and systematical researches are necessary on the dynamic migration of Ca2+,the microcosmic mechanism of dissolution and the way of inhibiting the erosion.关键词
混凝土/水库大坝/溶出性腐蚀/环境水质/水样分析Key words
concrete/dam/dissoluble erosion/environmental water quality/water sample analysis分类
建筑与水利引用本文复制引用
胡明玉,徐旺敏,何雯,彭金生..江西省大中型混凝土水库大坝溶出性侵蚀调查研究[J].长江科学院院报,2018,35(4):54-59,6.基金项目
国家自然科学基金项目(51068023) （51068023）
江西省水利厅科技项目(KT201235) （KT201235）
