Compaction Characteristics and Minimum Void Ratio Prediction Model for Gap-Graded Soil-Rock Mixture
Gap-graded soil-rock mixtures (SRMs), composed of coarse-grained rocks and fine-grained soils particles, are very inhomogeneous materials and widely encountered in geoengineering. In geoengineering applications, it is necessary to know the compaction characteristics in order to estimate the minimum...
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doaj-7520ec36b1c44f64b43ccf92f41ad4c82020-11-25T02:28:10ZengMDPI AGApplied Sciences2076-34172018-12-01812258410.3390/app8122584app8122584Compaction Characteristics and Minimum Void Ratio Prediction Model for Gap-Graded Soil-Rock MixtureTao Wang0Sihong Liu1Yan Feng2Jidu Yu3College of Water Conservancy and Hydropower, Hohai University, No.1, Xikang Road, Nanjing 210098, ChinaCollege of Water Conservancy and Hydropower, Hohai University, No.1, Xikang Road, Nanjing 210098, ChinaCollege of Water Conservancy and Hydropower, Hohai University, No.1, Xikang Road, Nanjing 210098, ChinaCollege of Water Conservancy and Hydropower, Hohai University, No.1, Xikang Road, Nanjing 210098, ChinaGap-graded soil-rock mixtures (SRMs), composed of coarse-grained rocks and fine-grained soils particles, are very inhomogeneous materials and widely encountered in geoengineering. In geoengineering applications, it is necessary to know the compaction characteristics in order to estimate the minimum void ratio of gap-graded SRMs. In this paper, the void ratios of compacted SRMs as well as the particle breakage during vibrating compaction were investigated through a series of vibrating compaction tests. The test results show that gap-graded SRMs may reach a smaller void ratio than the SRM with a continuous gradation under some circumstances. When the particles in a gap interval play the role of filling components, the absence of them will increase the void ratio of the SRM. The particle breakage of gap-graded SRMs is more prominent than the SRM with continuous gradation on the whole, especially at the gap interval of 5⁻20 mm. Based on the test results, a minimum void ratio prediction model incorporating particle breakage during compaction is proposed. The developed model is evaluated by the compaction test results and its validation is discussed.https://www.mdpi.com/2076-3417/8/12/2584soil-rock mixturescompactiongap gradationvoid ratioparticle breakage |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Tao Wang Sihong Liu Yan Feng Jidu Yu |
spellingShingle |
Tao Wang Sihong Liu Yan Feng Jidu Yu Compaction Characteristics and Minimum Void Ratio Prediction Model for Gap-Graded Soil-Rock Mixture Applied Sciences soil-rock mixtures compaction gap gradation void ratio particle breakage |
author_facet |
Tao Wang Sihong Liu Yan Feng Jidu Yu |
author_sort |
Tao Wang |
title |
Compaction Characteristics and Minimum Void Ratio Prediction Model for Gap-Graded Soil-Rock Mixture |
title_short |
Compaction Characteristics and Minimum Void Ratio Prediction Model for Gap-Graded Soil-Rock Mixture |
title_full |
Compaction Characteristics and Minimum Void Ratio Prediction Model for Gap-Graded Soil-Rock Mixture |
title_fullStr |
Compaction Characteristics and Minimum Void Ratio Prediction Model for Gap-Graded Soil-Rock Mixture |
title_full_unstemmed |
Compaction Characteristics and Minimum Void Ratio Prediction Model for Gap-Graded Soil-Rock Mixture |
title_sort |
compaction characteristics and minimum void ratio prediction model for gap-graded soil-rock mixture |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2018-12-01 |
description |
Gap-graded soil-rock mixtures (SRMs), composed of coarse-grained rocks and fine-grained soils particles, are very inhomogeneous materials and widely encountered in geoengineering. In geoengineering applications, it is necessary to know the compaction characteristics in order to estimate the minimum void ratio of gap-graded SRMs. In this paper, the void ratios of compacted SRMs as well as the particle breakage during vibrating compaction were investigated through a series of vibrating compaction tests. The test results show that gap-graded SRMs may reach a smaller void ratio than the SRM with a continuous gradation under some circumstances. When the particles in a gap interval play the role of filling components, the absence of them will increase the void ratio of the SRM. The particle breakage of gap-graded SRMs is more prominent than the SRM with continuous gradation on the whole, especially at the gap interval of 5⁻20 mm. Based on the test results, a minimum void ratio prediction model incorporating particle breakage during compaction is proposed. The developed model is evaluated by the compaction test results and its validation is discussed. |
topic |
soil-rock mixtures compaction gap gradation void ratio particle breakage |
url |
https://www.mdpi.com/2076-3417/8/12/2584 |
work_keys_str_mv |
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