废玻璃对排水沥青混合料路用性能影响研究.pdf

第40卷,第2期
公路工程
Vol40. No. 2
2015年4月
Highway Engineering
Apr,,2015
废玻璃对排水沥青混合料路用性能影响研究
陈永志
(重庆水利电力职业技术学院,重庆402160
[摘要]先评估玻璃砂和天然细粒料的特性差异,接着以不同比例的玻璃砂来取代排水混合料中细粒料部
分,探讨其在工程性质上的表现和影响。玻璃砂相较于天然细粒料,吸水率低且比重略小,取代排水混合料中细粒
料部分时会有较厚的沥青薄膜厚度,增加其抗磨耗表现;但随着添加比例上升,对于孔隙率及排水能力虽然影响不
大,但都有略为下降趋势。表面纹理平滑使得玻璃砂取代越多,稳定度会略微降低。此外玻璃多角的特性,提供混
合料在抗拉强度上有较佳表现。另外从回弹模量和流值以及车撤试验得知,玻璃砂会使得排水混合料有较高的变
形量,增加其塑性,防止裂缝及龟裂产生。抗水侵害能カ方面,在水侵害初期添加玻璃比例越多,剥脱情形会较严
重;但随浸水天数拉长,有无添加玻璃砂的混合料的强度损失率已差异很小。综合各项试验评估,应用玻璃砂于排
水混合枓中,建议玻璃砂最适当的取代量为5%左右。
[关键词]废玻璃砂;排水沥青混凝土;资源利用;环保
中图分类号]U414.1[文标识码]A
[文章编号]1674-0610(2015)02-0299-07
Research of Waste Glass on the Performance of Drainage
Asphalt Mixture
CHEN Yongzhi
Chongqing Vocational and Technical College of Hydraulic and Electric Engineering, Chongqing
402160, China
L Abstract] The purpose of this study was to assess diffe
terence in glass sand and natu
aractents
tics of the fine aggregate, then with different proportions of glass sand to replace drainage mixture of fine
grained material part, discuss the performance and influence on engineering properties. Glass sand com-
pared with natural fine aggregate, bibulous rate is low and a slightly smaller proportion, replace the
drainage mixture of fine aggregate part will have thicker asphalt film thickness, increase its abrasion re
sistance performance; But with the adding proportion rises, although little impact on porosity and drain-
age ability, but has a slightly downward trend. The more smooth surface texture makes glass sand to re-
place, stability wil decrease slightly. Besides glass more angular features, provide the mixture has better
performance in tensile strength. In addition from the modulus of resilience and flow values, and rutting
test, glass sand will make the drainage mixture have higher deformation, increase its plasticity, to pre
vent the cracks and crack. Ability to resist water enroach on, at the beginning of the water enroach on
adding proportion of glass, the more stripped situation is more serious; But along with the immersed days
stretched, with or without adding glass sand mixture strength loss rate has small differences. Considerin
various test evaluation, application of glass sand in drainage mixture, suggest glass sand is the most ap-
propriate to replace quantity is approximately 5
Key words] waste glass sand; drainage asphalt concrete; resource utilization; environmental pro-
tection
我国每年约有数百万吨的废玻璃未能有效分类于废玻璃焚化不易熔成灰烬,若进行焚化处理将折
再利用,而遭弈置于掩埋场或进入焚化炉处理。由损焚化炉的寿命,此外废玻璃无法经由自然生物分
[收稿日期]2014-10-29
[碁金项目]重庆市自然科学基金资助项目(a2013ja3000);交通部西部交通建设项目(2013318231010)
[作者简介」]陈永志(1982-),男,重庆人,讲师,研究方向:土木工程施工与管理。