酸性花岗岩沥青混合料水稳性试验
Experiment on water stability of acid granite asphalt mixture
谭波 1刘湘伶 2曹忠露 3陈平 1唐琛皓1
作者信息
- 1. 桂林理工大学 广西绿色建材与建筑工业化重点实验室,广西 桂林 541004
- 2. 桂林理工大学 广西绿色建材与建筑工业化重点实验室,广西 桂林 541004;广西交通职业技术学院,南宁 530023
- 3. 中交天津港湾工程研究院有限公司,天津 300222
- 折叠
摘要
为提高高湿热地区花岗岩沥青混合料的长期水稳性能,分别进行单掺 3%水泥、4%水泥及 30%消石灰水浸泡处治,通过冻融、冻融烘循环的劈裂试验来评价酸性花岗岩沥青混合料的长期适用性与水稳性能,并与未处治酸性花岗岩沥青混合料进行对比分析.结果表明:随着冻融、冻融烘次数的增加,处治后酸性花岗岩沥青混合料在3种试验条件下的劈裂强度与残留强度比呈整体下降趋势;冻融循环条件下,4%水泥>3%水泥>30%消石灰水>未处治集料;冻融烘循环条件下,4%水泥>3%水泥>30%消石灰水>未处治集料.
Abstract
In order to improve the long-term water stability performance of granite asphalt mixture in high humid and hot areas,3%cement,4%cement,and 30%hydrated lime water are sequentially added for soaking treat-ment.The long-term applicability and water stability performance of acidic granite asphalt mixture are evaluated through freeze-thaw and freeze-thaw drying cycle splitting tests,and compared and analyzed with untreated acid-ic granite asphalt mixture.The results show that the splitting strength and the ratio of splitting strength of the acid granite asphalt mixture under the three test conditions decrease with the increase of freeze-thaw and freeze-thaw drying times.Among them,4%cement>3%cement>30%sluice water>untreated aggregate under freeze-thaw cycle condition.Under the condition of freeze-thaw drying cycle,4%cement>3%cement>30%sluice water>untreated aggregate.
关键词
酸性花岗岩集料/冻融循环/劈裂强度/长期水稳性能Key words
acidic granite aggregate/freeze-thaw cycle/splitting strength/long-term water stability引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据