路基工程
路基工程
로기공정
SUBGRADE ENGINEERING
2011年
4期
129-131,134
,共4页
路基基层%水泥灰土稳定砂%聚丙烯纤维%抗裂性
路基基層%水泥灰土穩定砂%聚丙烯纖維%抗裂性
로기기층%수니회토은정사%취병희섬유%항렬성
subgrade base%cement-lime stabilized sand%polypropylene fiber%crack resistance
为解决水泥灰土稳定砂的收缩裂缝,通过聚丙烯纤维水泥灰土稳定砂和普通水泥灰土稳定砂各龄期的无侧限抗压强度、劈裂强度、抗压回弹模量和干缩系数等路用性能指标的研究,认为聚丙烯纤维能显著改善水泥灰土稳定砂材料的路用性能,尤其在抗裂性能方面具有明显的优势。通过现场试验和追踪调查表明,加入聚丙烯纤维能减少裂缝病害。
為解決水泥灰土穩定砂的收縮裂縫,通過聚丙烯纖維水泥灰土穩定砂和普通水泥灰土穩定砂各齡期的無側限抗壓彊度、劈裂彊度、抗壓迴彈模量和榦縮繫數等路用性能指標的研究,認為聚丙烯纖維能顯著改善水泥灰土穩定砂材料的路用性能,尤其在抗裂性能方麵具有明顯的優勢。通過現場試驗和追蹤調查錶明,加入聚丙烯纖維能減少裂縫病害。
위해결수니회토은정사적수축렬봉,통과취병희섬유수니회토은정사화보통수니회토은정사각령기적무측한항압강도、벽렬강도、항압회탄모량화간축계수등로용성능지표적연구,인위취병희섬유능현저개선수니회토은정사재료적로용성능,우기재항렬성능방면구유명현적우세。통과현장시험화추종조사표명,가입취병희섬유능감소렬봉병해。
In order to solve shrinkage cracking of cement-lime stabilized sand,the pavement performance indicators including unconfined compressive strength,splitting strength,compression modulus and shrinkage coefficient of polypropylene fiber reinforced cement-lime stabilized sand and general cement-lime stabilized sand in different ages are separately analyzed.It is considered that polypropylene fiber can significantly improve pavement performance of cement-lime stabilized sand,especially having clear advantages in the aspect of crack resistance.Through site test and tracking investigation,it is shown that polypropylene fiber mixture can reduce cracks.
