Laboratory validation of a gradation design concept for sustainable applications of unbound granular materials in pavement construction
Laboratory validation of a gradation design concept for sustainable applications of unbound granular materials in pavement construction
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未结合颗粒材料在路面施工中可持续应用的级配设计概念的实验室验证
DOI：
10.1016/j.conbuildmat.2016.10.108
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发表时间：
2016-12
影响因子：
7.4
通讯作者：
Zhang Jiasheng
中科院分区：
文献类型：
--
作者：
Xiao Yuanjie;Chen Liuxin;Zhang Zhen;Lyu Daiqi;Tutumluer Erol;Zhang Jiasheng
由于采石场和砾石矿流失到其他土地用途，未结合骨料变得越来越稀缺和昂贵;因此，设计和优化骨料级配以实现目标最终性能非常重要。本文的目的是在实验室中验证一个新引入的级配设计概念，旨在控制结构组件强度（稳定性）和排水特性（现场排水性）。研究了两种应用的骨料级配优化：（1）非结合渗透骨料基层（UPAB）和（2）混合细粒花岗岩尾矿（FGT）的混合比例，FGT是一种典型的破碎花岗岩采矿副产品，长期以来一直被认为是“废物”材料，粗破碎花岗岩骨料（CCGA）。为此，首先根据明尼苏达州交通部UPAB级配带选择了5个具有代表性的级配，并利用大型直剪试验装置研究了不同UPAB级配设计对抗剪强度性能和颗粒破碎潜力的影响。在第二种应用中，一种常见的采石场副产品废物（即，FGT）与CCGA以不同的百分比混合，以探索它们用于建筑路面地基的潜在用途。通过室内渗透试验和大型单调三轴压缩试验，研究了掺合比对混合料应力-应变特性的影响。根据试验结果，新级配设计概念推荐的最佳骨料级配在不影响排水性的情况下提供了增强的稳定性。新的级配设计概念，因此，在这项研究中验证了最佳级配，预计将实现可持续和有益的非结合骨料的应用，具有成本效益的长寿命路面。
Unbound aggregates are becoming increasingly scarce and expensive due to the loss of rock quarries and gravel mines to other land uses; therefore, it is important to engineer and optimize aggregate gradations for the targeted end-performances. This paper is aimed at validating in the laboratory a newly introduced gradation design concept intended for controlling structural assembly strength (stability) and drainage characteristics (field drainability). Aggregate gradation optimizations were studied for two applications: (1) unbound permeable aggregate base (UPAB) and (2) mixing proportions of blending fine granite tailings (FGT), a typical crushed granite mining by-product that has long been considered “waste” materials, with coarse crushed granite aggregates (CCGA). To this goal, five representative gradations were first selected according to the current Minnesota DOT UPAB gradation band, and the effects of different UPAB gradation designs on the shear strength properties and particle breakage potential were investigated using a large-scale direct shear test device. In the second application, one of the common quarry byproduct wastes (i.e., FGT), were mixed with CCGA in varying percentages to explore their potential use for building pavement foundations. Both laboratory permeability and large-scale monotonic triaxial compression tests were performed to investigate the effects of blending proportions on the stress–strain behavior. Based on the test results, the optimum aggregate gradations recommended by the new gradation design concept provided enhanced stability without compromising drainability. The new gradation design concept, hence validated in this study with produced optimum gradations, is expected to achieve sustainable and beneficial unbound aggregate applications for cost-effective long-life pavements.
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DOI：
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发表时间：
2015-06
期刊：
Civil Engineering Studies, Illinois Center for Transportation Series
影响因子：
--
作者：
E. Tutumluer;H. Ozer;Wenting Hou;Vincent Mwumvaneza
通讯作者：
E. Tutumluer;H. Ozer;Wenting Hou;Vincent Mwumvaneza
影响因子：
3.8
作者：
Tatek Fekadu Yideti;B. Birgisson;D. Jelagin;A. Guarin
通讯作者：
Tatek Fekadu Yideti;B. Birgisson;D. Jelagin;A. Guarin
DOI：
--
发表时间：
1973
期刊：
--
影响因子：
--
作者：
R. J. Marsal
通讯作者：
R. J. Marsal
DOI：
--
发表时间：
2015-08
期刊：
--
影响因子：
--
作者：
E. Tutumluer;Yuanjie Xiao;W. Wilde
通讯作者：
E. Tutumluer;Yuanjie Xiao;W. Wilde
DOI：
10.17226/22211
发表时间：
2015-02
期刊：
--
影响因子：
--
作者：
S. Nazarian
通讯作者：
S. Nazarian