水泥稳定碎石抗离析评价方法研究

硅酸盐通报 ›› 2023, Vol. 42 ›› Issue (7): 2645-2655.

所属专题：道路材料

水泥稳定碎石抗离析评价方法研究

王明军¹, 翟新明¹, 邸文锦², 翟健梁², 关博文², 熊锐²

1.青海省果洛公路工程建设有限公司,西宁 810021;
2.长安大学材料科学与工程学院,西安 710061

收稿日期:2023-04-13 修订日期:2023-05-10 出版日期:2023-07-15 发布日期:2023-07-25
通信作者: 关博文,博士,副教授。E-mail:bguan@chd.edu.cn
作者简介:王明军(1973—),男,高级工程师。主要从事公路工程施工方向的研究。E-mail:researcher58@163.com
基金资助:
青海省重点研发与转化计划(2023-SF-124);中国博士后基金(2019M653520)

Segregation Resistance Evaluation Method of Cement Stabilized Macadam

WANG Mingjun¹, ZHAI Xinming¹, DI Wenjin², ZHAI Jianliang², GUAN Bowen², XIONG Rui²

1. Qinghai Guoluo Highway Engineering Construction Co., Ltd., Xining, 810021, China;
2. School of Materials Science and Engineering, Chang'an University, Xi'an 710061, China

Received:2023-04-13 Revised:2023-05-10 Online:2023-07-15 Published:2023-07-25

摘要/Abstract

摘要： 针对现有的水泥稳定碎石离析评价方法难以精准评价混合料离析的情况,本文通过室内离析试验定量分析5种不同级配水泥稳定碎石混合料的抗离析性能,并引入形状离析系数L与筛分离析系数Seg,定量划分水泥稳定碎石混合料的离析程度。结果表明:与水泥剂量4%(均为质量分数)相比,水泥剂量5%的混合料抗离析性能大幅度提升,且水泥剂量5%和水泥剂量6%的混合料抗离析能力相差不大,因此更推荐5%的水泥剂量;当混合料的4.75 mm通过率为35%和40%时,混合料内部能形成强有力的力链结构,抵抗集料在下落过程中的离散趋势,且水泥剂量为5%和6%混合料的离析等级总保持在无离析和轻微离析状态,表现出优异的水泥稳定碎石抗离析性能。

关键词: 水泥稳定碎石, 室内离析试验, 抗离析性能, 形状离析系数, 筛分离析系数, 离析等级

Abstract: In view of the difficulty of segregation evaluation methods of the existing cement stabilized macadam to accurately evaluate the situation of mixture segregation, the segregation resistance of five kinds of cement stabilized macadam mixture with different levels was quantitatively analyzed by indoor segregation test, and the shape segregation coefficient L and sieve segregation coefficient Seg were introduced to quantitatively classify the segregation degree of cement stabilized macadam mixture. The results show that compared to 4% (all are mass fraction) cement content, the segregation resistance of mixture with 5% cement content is significantly improved, and the segregation resistance of mixture with 5% and 6% cement content is not significantly different. Therefore, 5% cement content is more recommended. When the 4.75 mm pass percentage of mixture is 35% and 40%, a strong force chain structure is formed inside the mixture to resist the discrete trend of aggregate in the falling process, and the segregation grade of the mixture with 5% and 6% cement content remains in a state of no unsegregation and minor segregation, which demonstrates excellent segregation resistance of cement stabilized macadam.

Key words: cement stabilized macadam, indoor segregation test, segregation resistance, shape segregation coefficient, sieve segregation coefficient, segregation level

中图分类号:

U414

王明军, 翟新明, 邸文锦, 翟健梁, 关博文, 熊锐. 水泥稳定碎石抗离析评价方法研究[J]. 硅酸盐通报, 2023, 42(7): 2645-2655.

WANG Mingjun, ZHAI Xinming, DI Wenjin, ZHAI Jianliang, GUAN Bowen, XIONG Rui. Segregation Resistance Evaluation Method of Cement Stabilized Macadam[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2023, 42(7): 2645-2655.

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水泥稳定碎石抗离析评价方法研究

Segregation Resistance Evaluation Method of Cement Stabilized Macadam

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