[1]徐剑,秦永春,黄颂昌,等.关于细集料砂当量指标的探讨[J].东南大学学报(自然科学版),2002,32(2):268-271.[doi:10.3969/j.issn.1001-0505.2002.02.027]
 Xu Jian,Qin Yongchun,Huang Songchang,et al.Discussion of fine aggregate’s sand equivalent value[J].Journal of Southeast University (Natural Science Edition),2002,32(2):268-271.[doi:10.3969/j.issn.1001-0505.2002.02.027]
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关于细集料砂当量指标的探讨()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
32
期数:
2002年第2期
页码:
268-271
栏目:
交通运输工程
出版日期:
2002-03-20

文章信息/Info

Title:
Discussion of fine aggregate’s sand equivalent value
作者:
徐剑1秦永春22 黄颂昌 沈金安2
1 东南大学交通学院,南京 210096; 2 交通部公路科学研究所,北京 100088
Author(s):
Xu Jian1 Qin Yongchun2 Huang Songchang2 Shen Jinan2
1 Transportation College, Southeast University, Nanjing 210096, China
2 Research Institute of Highway, the Ministry of Communication, Beijing 100088, China
关键词:
砂当量 细集料 改性稀浆封层
Keywords:
Sand equiraleut(SE) fine aggregate micro-surfacing
分类号:
U414
DOI:
10.3969/j.issn.1001-0505.2002.02.027
摘要:
通过外加土的方法得到不同泥土含量的集料,进行砂当量试验,并用不同砂当量值的集料制作成改性稀浆封层混合料进行湿轮磨耗试验.试验结果表明,砂当量与集料中的泥土含量存在良好的线性关系,是评价细集料洁净程度的有效方法; 试验中集料级配和取样均匀程度会对试验结果产生一定影响; 砂当量低的集料会使改性剂无法发挥对改性稀浆封层混合料的改性效果,建议用于改性稀浆封层的细集料砂当量不低于60%.
Abstract:
Aggregates with different level of cleanness were obtained by adding different dosage of clay into them. Sand equivalent(SE)test were conducted on these aggregates. Micro-surfacing mixtures were prepared with these aggregates and used to conduct WTAT tests. The test results show that, SE value of aggregate has good linear relation with clay dosage,and can be used to evaluate the cleanness of fine aggregates; the gradation of aggregate and the uniformity of sample affect the test result; aggregate with low SE value may make the modifier in micro-surfacing mixture lose its efficacy, so it is suggested that the SE value of aggregate for micro-surfacing be higher than 60%.

参考文献/References:

[1] ISSA.A143 recommended performance guidelines for micro-surfacing[S].2000.1-2.
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备注/Memo

备注/Memo:
作者简介: 徐剑(1976—),男,博士生; 沈金安(联系人),男,研究员.
更新日期/Last Update: 2002-03-20