Performance Improvement of Soft Rock as Filling Material for Subgrade

Xue Song Mao; Lei Gang Zhou; Xiao Zhong Zheng; Biao Ma; Jie Liang

doi:10.4028/www.scientific.net/AMR.250-253.3444

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 250-253Performance Improvement of Soft Rock as Filling...

Performance Improvement of Soft Rock as Filling Material for Subgrade

Abstract:

A soft rock is generally prohibited to be used as filling material for highway subgrade. A novel method for improving the performance of subgrade is proposed. Aiming at the large amount of highly weathered soft rock along Shiyan-Tianshui superhighway, the physical and mechanical properties of the natural soft rock is analyzed. Then the cement is mixed into the soft rock as filling material to better the subgrade performance.The field and indoor experiments showed that the maximum dry density and optimum water content increases when the cement content increases. By mixing the cement, the subgrade performance can be significantly improved.

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Periodical:

Advanced Materials Research (Volumes 250-253)

Pages:

3444-3448

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.250-253.3444

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Online since:

May 2011

Authors:

Xue Song Mao, Lei Gang Zhou, Xiao Zhong Zheng, Biao Ma, Jie Liang

Keywords:

Cement, Soft Rock, Strength, Subgrade

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