纤维水泥土无侧限抗压强度试验研究

Experimental study on unconfined compressive strength of fiber reinforced cement soil

为研究玻璃纤维加筋水泥土的效果,开展无侧限抗压强度试验。分别研究纤维掺量和纤维长度对纤维加筋水泥土无侧限抗压强度的影响。研究结果表明:纤维的加入能提高水泥土的延性,改善水泥土的脆性,极大的提高水泥土的残余强度;同时纤维能有效提高水泥土的无侧限抗压强度,纤维水泥土的强度受纤维掺量影响较大,最优纤维掺量为2‰;纤维掺量一定时,当纤维长度为9 mm时,纤维的加筋效果最佳。

For the purpose of studying the effect of glass fiber reinforced cement soil,unconfined compressive strength test was carried out.The effects of fiber content and fiber length on the unconfined strength of fiber reinforced cement soil were investigated.It is found that the inclusion of fiber can change the brittle behavior of the cement soil to a more ductile behavior and greatly improve the residual strength of the cement soil.The inclusion of fiber within cemented soil causes an increase in the unconfined compressive strength,and the strength of fiber-reinforced cement soil is significantly influenced by the fiber content,of which the optimal value is2‰.Provided that the fiber content is fixed,the fiber length of9mm yields the best fiber reinforcement effect.