As a high-quality reinforced material, basalt fiber has been widely concerned by scientific research workers. By changing the length (6mm,12mm,18mm,24mm,30mm) and amount of basalt fiber (0.3%,0.5%,0.7%,1%) and the proportion of cement in cement soil (10%,15%,20%,25%), make cubes of different ages(7d,14d,28d)and then conduct unconfined compression test. Effect on compressive strength of cement-soil with basalt fiber is researched. It is showed that the optimum mixing length of basalt fiber is 18mm and the optimum dosage range is 0.5%-0.7%.Basalt Fiber shows excellent performance on the early strength of cement soil and it has a good toughening effect.

[1] JIE Yu-xin, LI Guang-xin. Study on calculation method of fiber reinforced soil. China Civil Engineering Journal, 1999,05:51-55.

[2] CHEN Shao-jian, WANG Dong-quan. Experimental study on fiber cement soil used in road subbase. Subgrade Engineering, 2009,02:143-144.

[3] MAHESHWARI K V, DESAI A K,SOLANKI C H. Performance of fiber reinforced clayey soil. The Electronic Journal of Geotechnical Engineering,2011,16:1067–1082.

[4] HAO Wen-xiu, SHEN Xiang-dong.Mechanical properties of glass fiber fly ash cement soil. Journal of Highway and Transportation Research and Development, 2012,03:12-16.

[5] MOHAMED,A E M K.Improvement of swelling clay properties using hay fibers. Construction and Building Materials, 2013,38:242–247.

[6] WANG Jian-ye, PENG Li-yun. Experimental study on properties of silt reinforced by basalt fiber. Journal of Beijing Jianzhu University, 2015,03:33-38