Interior Experimental Study on Engineering Properties of the Modified Tonhaltig Phyllite
In view of the fact that large amounts of tonhaltig phyllite were found along the Shi-Tian expressway line, these soft rocks could not meet the roadbed filling requirements. It was necessary to improve the weathered soft rocks to satisfy the engineering demands. Interior comparative tests research on seven modified methods were carried out such as part in different proportions of cement、sand or stone bits, with soft rock of different water contents being artificial to mix and stir evenly, then unconfined compression strength of the samples at different cement quantity、different curing ages were compared; the optimum water content and and maximum dry density were determined through the compaction test; In addition, the principal effect of CBR value was analyzed. thus the best modified way was defined, the aim was to provide reference of theory and examination for further design and engineering application on weathered rock of expressway roadbed construction.
Chaohe Chen, Yong Huang and Guangfan Li
X. P. Li et al., "Interior Experimental Study on Engineering Properties of the Modified Tonhaltig Phyllite", Advanced Materials Research, Vols. 243-249, pp. 2586-2590, 2011