非饱和粉煤灰抗剪强度的时间效应及其预测

doi:10.12066/j.issn.1007-2861.1803

Abstract

Abstract:

Fly-ash is an industrial waste material, and is often used as a filling material in subgrade engineering. Many factors affect engineering properties of fly-ash. To investigate the effect of water content and age on the strength of fly-ash, a series of direct shear tests on a fly-ash are carried out. Relations between water content or age and shear strength with the same dry density were obtained. The results show that the shear strength and cohesion of the fly-ash change with variation of the saturation degree and increase with age, while the internal friction angle changes a little. Finally, shear strength of unsaturated fly-ash is predicted using unsaturated soil mechanics and soil-water characteristic curve (SWCC).

Key words: fly-ash, unsaturated soil, shear strength, time effect, prediction

CLC Number:

TU442

WANG Sicong, SUN Dean. Time effect of shear strengths of unsaturated fly-ash and its prediction[J]. Journal of Shanghai University（Natural Science Edition）, 2018, 24(1): 108-117.

Add to citation manager EndNote|Reference Manager|ProCite|BibTeX|RefWorks

URL: https://www.journal.shu.edu.cn/EN/10.12066/j.issn.1007-2861.1803

https://www.journal.shu.edu.cn/EN/Y2018/V24/I1/108

Figures/Tables 12

Fig.1

Fig.2

Fig.3

Fig.4

Fig.5

Fig.6

Fig.7

Fig.8

References 11

[1]	黄宗远, 陈长寿, 张敏 , 等. 粉煤灰在公路路基施工中的应用[J]. 中南公路工程, 2003,28(1):63-65.
[2]	魏迎奇, 田继雪, 蔡红 , 等. 粉煤灰的基质吸力及非饱和特性研究[J]. 水利学报, 2014,45(S2):8-13.
[3]	张晓龙, 李兆峰 . 含水率对粉煤灰抗剪强度的影响[J]. 硅酸盐通报, 2014,33(4):905-908.
[4]	赵明华, 王海波, 张玲 , 等. 非饱和粉煤灰抗剪强度试验研究[J]. 水文地质工程地质, 2014,41(2):57-61.
[5]	Chindarasir T P, Chareera T, Hatanaka S , et al. High-strength geopolymer using fine high-calcium fly ash[J]. Journal of Materials in Civil Engineering, 2011,23(3):264-270. doi: 10.1061/(ASCE)MT.1943-5533.0000161
[6]	Jang J G, Lee H K . Effect of fly ash characteristics on delayed high-strength development of geopolymers[J]. Construction and Building Materials, 2016,102(1):260-269. doi: 10.1016/j.conbuildmat.2015.10.172
[7]	Leong E C, He L, Rahardjo H . Factors affecting the filter paper method for total and matric suction measurements[J]. Geotechnical Testing Journal, 2002,25(3):1-12.
[8]	中华人民共和国水利部. GB/T50123---1999 土工试验方法标准[S]. 北京: 中国计划出版社, 1999.
[9]	冯海宁, 杨有海, 龚晓南 . 粉煤灰工程特性的试验研究[J]. 岩土力学, 2002,23(5):579-582.
[10]	孙德安, 刘文捷, 吕海波 . 桂林红黏土的土水特征曲线[J]. 岩土力学, 2014,35(12):3345-3351.
[11]	胡昕, 洪宝宁, 杜强 , 等. 含水率对煤系土抗剪强度的影响[J]. 岩土力学, 2009,30(8):2291-2294.

[1]	XU Hao, SHI Chenxin, HE Wenfu, ZHAO Huiling, ZHAN Haonan. Site vibration response and attenuation prediction models under tra–c load [J]. Journal of Shanghai University（Natural Science Edition）, 2025, 31(6): 1007-1022.
[2]	JIANG Tianhao, WANG Rui. Traffic accident prediction based on multi-head attention spatio-temporal graph convolutional network [J]. Journal of Shanghai University（Natural Science Edition）, 2025, 31(4): 678-690.
[3]	WANG Shuang, LIU Jialiang, ZHANG Haikun, HU Yueli. A fast algorithm of HEVC intra mode decision [J]. Journal of Shanghai University（Natural Science Edition）, 2025, 31(3): 561-570.
[4]	GAO Yu, ZHANG Yiming, DONG Yi. Consolidation drainage of compacted clay based on multistage direct-shear test [J]. Journal of Shanghai University（Natural Science Edition）, 2024, 30(4): 635-643.
[5]	LIN Yue, , LIU Tingzhang. Room cooling load prediction model based on deep learning [J]. Journal of Shanghai University（Natural Science Edition）, 2023, 29(6): 1068-1075.
[6]	CHEN Yang, YANG Pu, ZHU Bing. Analysis of cloud cavitation structure and prediction of erosion risk for a three-dimensional hydrofoil [J]. Journal of Shanghai University（Natural Science Edition）, 2023, 29(3): 436-.
[7]	HUANG Zhongkai, SUN Dean, XU Yongfu, ZHANG Junran. Tensile strength of expansive soil in drying-wetting process and its prediction [J]. Journal of Shanghai University（Natural Science Edition）, 2023, 29(3): 536-.
[8]	ZHANG Han, CHEN Longlong, ZHANG Jianhua, JIANG Haizhen. Structural design and performance prediction of transparent polyimides with high thermal stability [J]. Journal of Shanghai University（Natural Science Edition）, 2022, 28(5): 794-812.
[9]	QIN Zhenyu, SUN De'an, ZHOU Xiangyun, LIU Yuemiao. Anisotropy of tensile strength of compacted Gaomiaozi bentonite [J]. Journal of Shanghai University（Natural Science Edition）, 2022, 28(4): 668-677.
[10]	HU Rui, LIU Qing, ZHANG Guangjie, LI Junjie, CHEN Xiaoyu, WEI Xiao, DAI Dongbo. Phase stability prediction of hign entropy alloys in aluminum matrix composites based on feature engneering and machine learning [J]. Journal of Shanghai University（Natural Science Edition）, 2022, 28(3): 476-484.
[11]	WANG Rongrong, XU Shugong, HUANG Jianbo. Image matting based on deep learning [J]. Journal of Shanghai University（Natural Science Edition）, 2022, 28(2): 261-269.
[12]	QIN Aifang, XU Weifang, JIANG Lianghua. Analysis of radial consolidation of unsaturated soil with vertical drains considering drain resistance and the smear effect [J]. Journal of Shanghai University（Natural Science Edition）, 2021, 27(6): 1074-1084.
[13]	ZHAO Huanli, HE Youhua. Bayesian inference for semiparametric ordinal regression [J]. Journal of Shanghai University（Natural Science Edition）, 2021, 27(1): 218-226.
[14]	QIN Aifang, FU Xianlei, RUAN Kunlin, JIA Xu. Mechanical properties of bentonite-calcium carbonate mixture [J]. Journal of Shanghai University（Natural Science Edition）, 2020, 26(4): 628-639.
[15]	SHI Yunyang, MIAO Yang, XI Yinfei, ZHANG Qi, LIU Zhiyuan. Dynamic path planning method considering traffic environment and battery capacity of pure electric vehicles [J]. Journal of Shanghai University（Natural Science Edition）, 2020, 26(3): 353-366.

Time effect of shear strengths of unsaturated fly-ash and its prediction

RichHTML

PDF

Knowledge

Abstract

Cite this article

share this article

Figures/Tables 12

References 11

Related Articles 15

Recommended Articles

Metrics

Comments