南京工业大学学报（自然科学版）2018，Vol.40Issue(3)：18-23,6.DOI:10.3969/j.issn.1671-7627.2018.03.004
NaOH溶液浓度对硅质集料和白云质集料岩石柱膨胀的影响
Effects of NaOH solution concentration on expansion of rock-prisms of siliceous and dolomitic aggregates
杨文文 1邓敏 1黄蓓 2陈维佳 1王志磊1
作者信息
- 1. 南京工业大学 材料科学与工程学院,材料化学工程国家重点实验室,江苏 南京210009
- 2. 国家"江苏先进生物与化学制造协同创新中心",江苏 南京210009
- 折叠
摘要
Abstract
The expansibility of siliceous aggregates with distributed alkali-silica reactive components and dolomitic aggregates was evaluated by the modified rock-prism test method in which different concentrations of NaOH solution at 80℃ were used.Results showed that significant expansion was recorded on the rock-prisms prepared with siliceous aggregates and dolomitic aggregates cured in 1.00 and 0.50 mol/L NaOH solutions at 80 ℃.When the concentrations of NaOH solution were not more than 0.25 mol/L,little expansion was measured on the rock-prisms of the siliceous aggregates.However,obvious expansion was detected on the rock-prisms of dolomitic aggregates soaked in 0.25 or 0.10 mol/L NaOH solutions at 80℃. The modified rock-prism test method could be used to evaluate alkali-silica reactivity of siliceous aggregates with distributed alkali-silica reactive components,and alkali-carbonate reactivity of dolomitic aggregates could be identified by testing rock-prisms in 0.25 mol/L NaOH solutions at 80℃.关键词
硅质集料/白云质集料/岩石柱/NaOH溶液浓度Key words
siliceous aggregate/dolomitic aggregate/rock-prism test method/concentration of NaOH solution分类
建筑与水利引用本文复制引用
杨文文,邓敏,黄蓓,陈维佳,王志磊..NaOH溶液浓度对硅质集料和白云质集料岩石柱膨胀的影响[J].南京工业大学学报（自然科学版）,2018,40(3):18-23,6.
