材料科学与工程学报2017，Vol.35Issue(5)：729-733,5.DOI:10.14136/j.cnki.issn 1673-2812.2017.05.009
沸石及膨润土对水泥-铬渣体系中Cr(Ⅵ)浸出的影响
Influence of Zeolite and Bentonite on Leaching of Cr (Ⅵ) from Chromium Residue-cement Matrices
摘要
Abstract
Influences of zeolite and bentonite on leaching of Cr (Ⅵ) from chromium residue-cement matrices were investigated in this paper.The results show that the zeolite or bentonite on controlling the leaching of Cr (Ⅵ) has obvious effect.Under the conditions of the dosage of 30％ and pH 3,Cr (Ⅵ)concentration in the leachate of chromium residue-cement hardened paste at 28 d ages decrease by 82％ and 63％,respectively.The effect of zeolite is better than that of bentonite.Natural curing conditions of exposing to the rain can lead to Cr (Ⅵ) concentration decrease nearly double.At the same time,the adverse impact of bentonite on the compressive strength is greater than zeolite.关键词
铬渣/水泥硬化浆体/沸石/膨润土/Cr(Ⅵ)Key words
chromium residue/cement hardened paste/zeolite/bentonite/Cr(Ⅵ)分类
建筑与水利引用本文复制引用
阚黎黎,王家豪,徐超,施惠生..沸石及膨润土对水泥-铬渣体系中Cr(Ⅵ)浸出的影响[J].材料科学与工程学报,2017,35(5):729-733,5.基金项目
国家自然科学基金资助项目(51172164),云南省应用基础研究基金资助项目(2013FB023) （51172164）
