期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Influence of CG With High Content of Metallic Particles as a Cement Admixture on Cement Strength
1
作者 万惠文 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2003年第2期65-67,共3页
Copper gangue (CG), containing a large amount of water with grain sizes of 0.037 to 0.10mm,is an inactive industrial waste generated from copper refineries. When it is dried and used as a cement admixture, the inf... Copper gangue (CG), containing a large amount of water with grain sizes of 0.037 to 0.10mm,is an inactive industrial waste generated from copper refineries. When it is dried and used as a cement admixture, the influence of the presence of finely dispersed metallic particles in CG on the microstructure and compressive strength of cement paste has been studied.The results show that the higher the replacement of CG is,the lower the compressive strength of cement mortar is.However,the long-term strength of the specimens with 10% CG,especially after being cured for 3 months,approached to that of the plain mortar.Its mechanism was studied by an electron probe X-ray microanalyzer (EPXMA).The results indicate that a small quantity of Fe(OH) 3·nH 2O slowly formed from Fe 2O 3 in the presence of Ca(OH) 2, free CaO and MgO of the clinker also slowly hydrated and formed Ca(OH) 2 and Mg(OH) 2 respectively,so the hardened cement paste became more compact. 展开更多
关键词 metallic particles industrial waste copper gangue cement admixture distribution of element
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部