Mechanical and Fatigue Properties as Well as Strength Criteria of Cement Stabilized Gravel Produced by Vibration Compaction Method

被引：0
|
作者：
Ji X. [1 ]
Wang T. [2 ]
Zhou Z. [3 ]
Zhang Y. [1 ]
机构：
[1] Key Laboratory of Road Structure & Materials of Ministry of Transport, Chang'an University, Xi'an
[2] 6th Design Institute Co., Ltd., Shanghai Municipal Engineering Design Institute, Hefei
[3] Sichuan Communication Survey & Design Institute, Department of Transportation of Sichuan Province, Chengdu
来源：
| 2018年 / Tongji University卷 / 21期
关键词：
Cement stabilized gravel(CSG); Fatigue property; Mechanical property; Strength criteria; Vibration compaction method(VTM);
D O I：
10.3969/j.issn.1007-9629.2018.05.010
中图分类号：
学科分类号：
摘要：
Mechanical strength and fatigue properties of cement stabilized gravel produced by vibration compaction method(VTM-CSG) were studied. The strength criteria of VTM-CSG against fatigue failure was proposed based on the load response of pavement, mechanical and fatigue properties of VTM-CSG as well as Miner's theory of fatigue accumulation. The results show that the mechanical properties(unconfined compressive strength; splitting strength and compressive resilient modulus) of VTM-CSG enhance linearly with the increase of cement content, and increase nonlinearly with the increase of curing age. The VTM-CSG with skeleton dense structure shows better mechanical properties. The growth equation of VTM-CSG strength can accurately describe the characteristics of strength growth. When the test conditions were limited, the mechanical index relationship equation can be used to predict the other mechanical strengths. The fatigue equation of VTM-CSG is put forward, and the fatigue properties of skeleton dense gradation is better than that of suspension dense gradation under high stress level. The compressive strength and splitting strength criteria of VTM-CSG against fatigue failure are proposed, which are correlated with pavement structure and layer material properties and service life. The goal of structure-material integrated control of VTM-CSG base fracture is realized. © 2018, Editorial Department of Journal of Building Materials. All right reserved.
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页码：761 / 767and774
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