FT-IR Study on Early-Age hydration of Alkali-Activated Slag Cement

摘要：

The hydration process of alkali-activated slag cement, especially at early-age, was studied by FT-IR, compared with that of Portland cement. The results show that during the hydration of alkali activated slag cement, two processes have taken place, the dissolution of Al3+from the slag and then the recombination of Al3+ions with the silicate anions. The former associated with the break of the glass network of slag and the later with the re-polymerization of the silicate and aluminosilicate anions. The rate of break of the glass network increases with the dosage of water glass, which completed in 24 h when the dosage of the water glass solution equivalent to Na2O exceeds 6% of the slag powder. It is confirmed by the IR study that Ca(OH)2 is absent in the hardened alkali activated slag cement paste.

作者: Yonghao Fang Zhenglong Lu Zhongli Wang

作者单位: College of Mechanics and Materials, Hohai University, Nanjing 210098, China Quality Testing Center of Tarim Oilfield Company of PetroChina, Koral, Xingjiang 841000, China

会议类型: 国际会议

会议名称: The Second Annual Meeting on Testing and Evaluation of Inorganic Mateirals(第二届全国无机材料测试与评价学术年会 TEIM-2)

会议地点: 长沙

会议语种:英文

页码: 429-432

在线出版日期: 2011-06-30（万方平台首次上网日期，不代表论文的发表时间）