CAJ | 학술논문

通过无侧限抗压强度试验，研究聚丙烯纤维对红黏土无侧限抗压强度的影响规律。试验结果表明，在红黏土中掺入一定量的聚丙烯纤维，可以明显地提高其无侧限抗压强度，聚丙烯纤维土的无侧限抗压强度是素土的1．18～2．54倍；聚丙烯纤维土的无侧限抗压强度随着纤维含量和纤维长度的增加而增大。纤维能提高红黏土的残余强度，增强了土体的破坏韧性，使破坏模式由脆性破坏向塑性破坏转变；纤维在土体中形成了空间网状结构，约束了土体的变形，提高了土体的整体性。本文的研究成果对聚丙烯纤维红黏土作为路基填土材料的工程应用提供了试验数据和理论依据。
통과무측한항압강도시험，연구취병희섬유대홍점토무측한항압강도적영향규률。시험결과표명，재홍점토중참입일정량적취병희섬유，가이명현지제고기무측한항압강도，취병희섬유토적무측한항압강도시소토적1．18～2．54배；취병희섬유토적무측한항압강도수착섬유함량화섬유장도적증가이증대。섬유능제고홍점토적잔여강도，증강료토체적파배인성，사파배모식유취성파배향소성파배전변；섬유재토체중형성료공간망상결구，약속료토체적변형，제고료토체적정체성。본문적연구성과대취병희섬유홍점토작위로기전토재료적공정응용제공료시험수거화이론의거。
To study the effect of blending polypropylene fiber on the red clay,a series of samples were prepared and subjected to the unconfined compressive strength (UCS)test.The results indicate that mixing with a certain amount of fiber can significantly increase the strength of red clay.The UCS of polypropylene fiber reinforced red clay is obvious higher than that without fiber,and the rate of enhancement is between1.18 to 2.54 times.The UCS increases significantly with the increase of fiber content and fiber length.Fiber can also improve the residual strength of red clay,strengthen the destruction of the soil resilience,which changes the failure mode from brittle to plastic.Besides a spatial network structure formed from polypropylene and particles improves integrity and lim-its deformation of the red soil.The result provides test data and theoretical basis for the practical application of engineering when polypropylene fiber reinforced red clay is the filling material.