纤维水泥稳定土的无侧限抗压强度试验研究

Experimental Study on Unconfined Compressive Strength of Fiber Cement Stabilized Soil

为进一步研究掺加聚丙烯纤维对水泥稳定土强度的影响,进行了纤维水泥稳定土的7d无侧限抗压强度试验.结果表明,水泥稳定土的无侧限抗压强度随着纤维掺量及纤维长度的改变而变化,纤维掺量对水泥稳定土7d无侧限抗压强度的影响大于纤维长度的影响,水泥稳定土中掺加纤维与否的破坏形态有明显区别,当水泥含量为10%、纤维掺量为1‰、纤维长度为12mm时,水泥稳定土的无侧限抗压强度增幅较大.工程应用中可优先考虑通过提高纤维掺量来有效提高水泥稳定土的无侧限抗压强度.

In order to study the influence of polypropylene fiber added on the strength of cement stabilized aeolian soil,series of experiments had been put forward with samples after 7 d standard curing.Then,7 d unconfined compressive strength of fiber cement stabilized aeolian soil was gained through tests,which changes with fiber dosage and its length.Based on the data,it is found that fiber content has an important influence on the 7 d unconfined compressive strength than its length.As for failure modes,there are significant differences between the samples of adding fibers and those adding nothing.After adding 10% cement,1‰ fiber with 12 mm single length,the unconfined compressive strength of cement stabilized aeolian soil can be greatly improved.In a word,fiber content should be given priority to,which can improve the unconfined compressive strength of fiber cement stabilized aeolian soil.