STUDY ON STRENGTH AND DEFORMATION CHARACTERISTICS OF EXPANSIVE SOILS TREATED WITH LIME-BIOMASS ASH

被引：0

作者：

Zhang D. ^{[1
]}

Xu F. ^{[1
]}

Zhang Y. ^{[2
]}

Li F. ^{[2
]}

机构：

[1] Department of Architecture Civil Engineering, Nanjing Institute of Technology, Nanjing

[2] College of Civil and Transportation Engineering, Hohai University, Nanjing

来源：

Journal of Solid Waste Technology and Management | 2021年 / 47卷 / 04期

基金：

中国国家自然科学基金;

关键词：

Biomass ash; Expansive soil; Lime; Unconfined compressive strength;

D O I：

10.5276/JSWTM/2021.653

中图分类号：

学科分类号：

摘要：

This paper investigates the strength deformation of the lime- biomass ash treated expansive soils. The unconfined compressive strength, one-dimensional compression of the modified expansive soil of compaction were studied. The results showed that the maximum dry density and optimum moisture content of expansive soil decreased with the increase of lime and biomass ash content; The unconfined compressive strength test results show that there is no remarkable change in the unconfined compressive strength of the soils immediately treated with biomass ash, but the sample after 7 days of curing period of strength has been greatly improved, especially after the addition of lime is more obvious; the compression coefficient, the rebound coefficient of the saturated expansive soil with lime- biomass ash is significantly smaller than saturated expansive soil. The compressive modulus of the modified expansive soil increases with the increase of vertical pressure, which reflects the hardness of the improved expansive soil. © 2021 Widener University School of Civil Engineering. All rights reserved.

引用

页码：633 / 658

页数：25

共 22 条

[1]

Bell F.G., Lime stabilization of clay minerals and soils[J], Engineering geology, 42, 4, pp. 223-237, (1996)

[2]

Chen S., Yu S., Kong L., Et al., Wrapping method for middle expansive soil embankment and its experimental verification[J], Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 25, 9, pp. 1777-1783, (2006)

[3]

Du Yanjun Z.F.L.S., Experiment on improvement of expansive clays with lime-fly ash [J], Journal of Southeast University (Natural Science Edition), (2007)

[4]

Guo A., Kong L.W., Hu M.J., Et al., On the pavement performance test of stabilized uniformly-graded gravel soil with lime[J], Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering, 24, pp. 5641-5647, (2005)

[5]

Guo A., Kong L.W., Hu M., Et al., On determination of optimum water content of lime-treated expansive soil[J], Yantu Lixue(Rock and Soil Mechanics), 28, 3, pp. 517-521, (2007)

[6]

HAN Zongna, Study on Characteratics And Utilization of the Ashes from Biomass Fried Power Plant[D]

[7]

Jiuchen W., Lin D., Yishui T., Et al., Analysis of the development status and trends of biomass energy industry in China[J], Transactions of the Chinese Society of Agricultural Engineering, 2007, 9, (2007)

[8]

Kumar A., Walia B.S., Bajaj A., Influence of fly ash, lime, and polyester fibers on compaction and strength properties of expansive soil[J], Journal of materials in civil engineering, 19, 3, pp. 242-248, (2007)

[9]

Kate J.M., Strength and volume change behavior of expansive soils treated with fly ash[C], Proceedings of the Geo-Frontiers 2005 Congress, (2005)

[10]

Lees G., Abdelkater M.O., Hamdani S.K., Effect of the clay fraction on some mechanical properties of lime-soil mixtures[J], Highway Engineer, 29, 11, (1982)

← 1 2 3 →