减水剂对铬渣-水泥硬化浆体中Cr(Ⅵ)渗出的影响  

Effect of Water Reducer on Leaching of Cr(Ⅵ) from System of Chromium Slag-Cement

作　　者：施惠生[1] 阚黎黎[2] 

机构地区：[1]同济大学先进土木工程材料教育部重点实验室,上海200092 [2]同济大学材料科学与工程学院,上海200092

出　　处：《建筑材料学报》2006年第6期638-643,共6页Journal of Building Materials

基　　金：国家自然科学基金资助项目(20277027)

摘　　要：在研究铬渣的胶凝活性以及不同掺量对水泥硬化浆体物理性能影响的基础上,选用了羰基焦醛系、聚羧酸系及萘系3类减水剂,并探讨了这3类减水剂对铬渣-水泥硬化浆体物理性能及Cr(Ⅵ)渗出的影响.试验表明,铬渣具有良好的胶凝活性,聚羧酸系减水剂对铬渣-水泥硬化浆体中Cr(Ⅵ)的浸出有一定的弱化作用.Based on the research of the effect of cementitious activity of chromium slag and different dosage of chromium slag on physical properties of Portland cement, three kinds of water reducer, sulfonic aceton formaldehyde, polycarboxylic and naphthalene series were chosen to investigate the influences of the three kinds of water reducer on physical properties and Cr（Ⅵ） concentrations in the leachate of the chromium slag-cement hardened paste. The results of this study show that the chromium slag has good cementitious activity, and that the Cr（Ⅵ） concentrations in the leachate is decreased very much by adding polycarboxylic series of water reducer in the chromium slag-cement hardend paste. The polycarboxylic series of water reducer has good effect action on decreasing the leaching of Cr（Ⅵ） from the chromium slag-cement hardened pastes.

关 键 词：铬渣 水泥硬化浆体 减水剂 物理性能 

分 类 号：TU528.042.2[建筑科学—建筑技术科学]