粉煤灰与粒化高炉矿渣对水泥稳定碎石强度和收缩特性影响研究
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摘要
为了系统评价活性粉末对水泥稳定碎石路用性能的影响,采用无侧限抗压试验、间接抗拉试验、干缩试验和温缩试验,研究了粉煤灰与粒化高炉矿渣单掺及复掺比例对水泥稳定碎石强度和收缩性能的影响规律。结果表明:粉煤灰、粒化高炉矿渣在单掺、复掺下均能通过填充效应及二次水化反应改善水泥稳定碎石力学特性和收缩特性,其中掺加粒化高炉矿渣的水泥稳定碎石强度增长较快,复掺粉煤灰与粒化高炉矿渣对水泥稳定碎石力学特性与收缩特性改善效果最佳。
In order to systematically evaluate the effect of reactive powder on the pavement performance of cement stabilized crushed stone,the development law of strength and shrinkage characteristics of it with various ratio of single mixing or compound mixing of fly ash and granulated blast furnace slagare are studied by means of unconfined compressive test,indirect tensile test,drying shrinkage test and temperature shrinkage test. The results show that both fly ash and granulated blast furnace slag adding with single mixing or compound mixing can improve the strength and shrinkage characteristics of cement stabilized crushed stone through filling effect and secondary hydration reaction. In addition,the strength growth rates of cement stabilized crushed stone withgranulated blast furnace slag are greater than those with fly ash. Otherwise, the obvious improvements of both strength and shrinkage characteristics are found for cement stabilized crushed stone with compound mixing with fly ash and granulated blast furnace slag.
In order to systematically evaluate the effect of reactive powder on the pavement performance of cement stabilized crushed stone,the development law of strength and shrinkage characteristics of it with various ratio of single mixing or compound mixing of fly ash and granulated blast furnace slagare are studied by means of unconfined compressive test,indirect tensile test,drying shrinkage test and temperature shrinkage test. The results show that both fly ash and granulated blast furnace slag adding with single mixing or compound mixing can improve the strength and shrinkage characteristics of cement stabilized crushed stone through filling effect and secondary hydration reaction. In addition,the strength growth rates of cement stabilized crushed stone withgranulated blast furnace slag are greater than those with fly ash. Otherwise, the obvious improvements of both strength and shrinkage characteristics are found for cement stabilized crushed stone with compound mixing with fly ash and granulated blast furnace slag.
引文
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[21]盛燕萍,乔云雁,薛哲,等.工业固体废弃物在道路基层应用中的研究进展[J].筑路机械与施工机械化,2016(4):78-81.
[2] WU S H,CHEN H X,ZHANG J P. Effects of interlayer bonding conditions between semi-rigid base layer and asphalt layer on mechanical responses of asphalt pavement structure[J]. International Journal of Pavement Research and Technology,2017,10(3):274-281.
[3]周浩,沙爱民,胡力群.半刚性基层材料疲劳试验[J].长安大学学报(自然科学版),2015,32(3):6-10.
[4]徐鸥明,韩森,孙薇.级配类型对水泥稳定碎石路用性能的影响研究[J].路基工程,2010(2):62-64.
[5]黄祯敏,肖敏,彭波.基于细集料填充系数的水泥稳定碎石性能研究[J].公路,2017(3):29-35.
[6]杨红辉,王建勋,郝培文,等.纤维在水泥稳定碎石基层中的应用[J].长安大学学报(自然科学版),2006,26(3):14-16.
[7]汤寄予,高丹盈,韩菊红.玄武岩纤维对沥青混合料水稳定性影响的研究[J].公路,2008(1):188-195.
[8] ARSLAN M E. Effects of basalt and glass chopped fibers addition on fracture energy and mechanical properties of ordinary concrete:CMOD measurement[J]. Constructionand Building Materials,2016,114:383-391.
[9]徐鸥明,韩森,孙薇.水泥粉煤灰稳定碎石强度增长性能[J].广西大学学报(自然科学版),2009,34(4):474-478.
[10]徐鸥明,王有贵,陈俊宇,等.掺粉煤灰水泥稳定碎石收缩性能研究[J].重庆交通大学学报(自然科学版),2014,33(4):72-75.
[11]李天宇,王朝辉,李彦伟.断级配综合稳定碎石的路用性能[J].筑路机械与施工机械化,2017(9):51-54.
[12] JIANG Y J,FAN I F. An investigation of mechanical behavior of cement stabilized crushed rock material using different compaction methods[J]. Constructionand Building Materials,2013,48:508-515.
[13]张良奇,孔鲜宁,冯忠绪.水泥稳定碎石振动搅拌装置的研制及工业试验[J].广西大学学报(自然科学版),2015,40(5):1155-1161.
[14]李晓辉,李波,杨小龙.超厚宽幅水稳碎石基层施工技术研究[J].公路,2014(11):17-20.
[15]时建刚,谢远新,全厚式水泥稳定碎石基层施工质量控制[J].公路,2014(12):71-73.
[16]王选仓,乔志,尹燕.半刚性路面材料大压实功压实规律研究[J].中国公路学报,2016,29(6):280-286.
[17]张静,魏连雨,王涛.水泥稳定碎石基层材料微裂技术研究[J].公路,2017(1):8-13.
[18]詹姆斯F迈耶斯,拉曼匹丘尼曼,伯纳德特S卡普尔斯.粉煤灰:一种公路建设材料[M].北京:人民交通出版社,1982.
[19]徐江萍.水泥粉煤灰稳定碎石基层沥青路面抗裂性能研究[D].西安:长安大学,2006.
[20]吕剑明,吕海涛,刘远,等.贵州粉煤灰综合利用分析与发展[J].粉煤灰综合利用,2008(3):44-46.
[21]盛燕萍,乔云雁,薛哲,等.工业固体废弃物在道路基层应用中的研究进展[J].筑路机械与施工机械化,2016(4):78-81.