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| 无机处治风积沙的强度特性及工程应用研究 |
| Study on strength characteristics and engineering applicationof inorganic treated aeolian sand |
| 投稿时间：2017-12-05 修订日期：2017-12-22 |
| DOI： |
| 中文关键词: 道路工程 无机处治风积沙 回弹模量 无侧限抗压强度 工程应用 |
| 英文关键词: road engineering inorganic treatment of aeolian sand resilient modulus unconfined compressive strength engineering application |
| 基金项目:国家自然科学基金资助项目(51368058，51768070)；黄土地区公路建设与养护技术交通行业重点实验室和山西省重点实验室开放课题资助(KLTLR-Y14-10)，；国家大学生创新实验（201610755019）。 |
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| 中文摘要: |
| 为探究无机处治风积沙的工程特性,通过室内试验开展了三种无机结合料处治风积沙的7天回弹模量和无侧限抗压强度研究,明确了其强度特性和适用性。研究结果表明：随胶结料含量增加,三种处治风积沙回弹模量均增大,其中二灰处治效果最优,其次是水泥石灰处治和石灰处治；随着胶结料含量增加,水泥石灰和二灰处治的风积沙无侧限抗压强度均增大,而石灰处治风积沙无侧限抗压强度则是随时灰剂量增加先增大后减小,其中水泥石灰处治效果最佳,其次是石灰处治和二灰处治；综合分析强度特性,水泥石灰处治风积沙总体效果最好。因此建议可将水泥石灰处治作为风积沙地区路基处置的最优处治方法和技术应用,并可作为高等级公路的底基层和低等级公路的基层；石灰处治风积沙则亦可作为低等级公路的底基层和风积沙地区路基,而二灰风积沙则作为风积沙路基处治效果最好。 |
| 英文摘要: |
| To explore engineering characteristics of inorganic binder treated aeolian sand,laboratory tests are carried out to study 7 days resilient modulus and unconfined compressive strength of three kinds of inorganic binders treated aeolian sand with. Their trength characteristics and applicability has been clear. The research results show that the resilient modulus of three kinds inorganic binders treated aeolian sand increases with the increase of binder content. Among which two ash treatment effect is the best, followed cement lime treatment and lime treatment; With the Binder content increases, unconfined compressive strength of cement lime and two ash treated aeolian sand increases, and the unconfined compressive strength of lime treated aeolian sand is always ash dosage increased firstly and then decreased. Among them, the cement lime treatment effect is best, followed by lime treatment and two ash treatment. Therefore it is suggested that cement lime treated can be used as optimal treatment method and the application of technology, and as high-grade highway sub-base and low-grade highway base and in aeolian sand area. Lime treated aeolian sand can also be used as the sub-base of low grade highway and subgrade in aeolian sand area. And two ash treated aeolian sand effect is best for aeolian sand subgrade treatment. |
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