The properties of road base course materials of granular soils stabilized by AGS granular soil stabilizing cement

2003 ◽  
Vol 18 (2) ◽  
pp. 89-91 ◽  
Author(s):  
Shen Wei-guo ◽  
Zhou Ming-kai ◽  
Zhao Qing-lin ◽  
Wu Shao-peng

Phosphogypsum is a solid by-product waste generated from phosphoric acid industry. This paper presents the effectiveness of mixing Phosphogypsum with crushed limestone to use this blend as road base course. Seven percentages (0, 5, 10, 15, 20, 25 and 30%) of Phosphogypsum were replaced from crushed limestone mixture dry weight. The influence of blending Phosphogypsum with crushed limestone was evaluated by preparing and testing mixture with several percentages of phosphogypsum and crushed limestone to determine some of their properties as maximum dry density, optimum moisture content, un-soaked California bearing ratio, soaked California bearing ratio, swelling percent and California bearing ratio after a series of wetting-drying cycles. The results indicate that the mechanical characteristics were improved by adding phosphogypsum to the crushed limestone mixtures


2017 ◽  
Vol 150 ◽  
pp. 626-633 ◽  
Author(s):  
Bingliu Zhang ◽  
Weiguo Shen ◽  
Jing Wang ◽  
Wensheng Zhang ◽  
Wenshang Zhu ◽  
...  

2016 ◽  
Vol 143 ◽  
pp. 828-835 ◽  
Author(s):  
Shinichiro Kawabata ◽  
Tatsuya Ishikawa ◽  
Shuichi Kameyama

2018 ◽  
Vol 65 ◽  
pp. 09002
Author(s):  
Nur Hamizah Zulkifili ◽  
Muslich Hartadi Sutanto

This paper summarizes a theoretical study undertaken to provide a better understanding of the consequences of poor bond on flexible pavement performance. The main objective of this paper is to investigate the influence of bond on the performance of Malaysian road. The pavement structure of Malaysian road was analyzed using a layered linear elastic program, BISAR 3.0 taking into account different state of the bond at the interfaces of the pavement layers and a static horizontal load in addition to the standard vertical dual load. The results indicate that the condition of the bond between the wearing and binder course can reduce the life of the pavement by up to 64%. On the other hand, the results also indicate that the condition of the bond between the binder and road base course, which was made up from asphaltic materials can reduce the life of the pavement by up to 68%.


2019 ◽  
Vol 21 (7) ◽  
pp. 1955-1967
Author(s):  
Arash Bozorgi ◽  
Andrew Fried ◽  
Brina M. Montoya ◽  
Cassie Castorena

Author(s):  
Braja M. Das ◽  
Kim H. Khing ◽  
Eun C. Shin

The load-bearing capacity of a weak clay subgrade can be increased by placing a strong granular base course of limited thickness on top of the clay layer. The load-bearing capacity can be increased further, or the thickness of the granular base course can be reduced, by separating both layers by a geogrid. Laboratory model test results for the ultimate bearing capacity of a rigid strip loading on the surface of a granular soil underlain by a soft clay with a layer of geogrid at the interface of the two soils are presented. The optimum thickness of the granular soil layer and the critical width of the geogrid layer required to derive the maximum benefit from the reinforcement were determined. Model test results on the permanent settlement of the rigid strip load caused by cyclic loading of low frequency are presented.


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