偏高岭土对红土力学性质的影响

IF 1.6 Q3 ENGINEERING, GEOLOGICAL

Geotechnical Research Pub Date : 2022-10-07 DOI:10.1680/jgere.22.00046

Phuc-Lam Dao, Duc Bui-Van, K. Onyelowe, A. Ebid, V. Le, I. E. Ahaneku

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引用次数: 3

摘要

研究了不同添加量的偏高岭土（MK）对用于路面基础施工的红土力学性能的影响。初步测试结果表明，该土壤具有高度塑性，缺乏足够的机械能力，无法用作柔性路面基础的压实路基/底基层。煅烧高岭土以形成MK，MK以干红土的3%、6%、9%和12%重量的比例被用来稳定它。在MK处理的红土上进行了加州承载比和无侧限抗压强度试验，以确定处理材料在柔性路面压实路基和/或底基层施工中的适用性。稳定性试验结果表明，MK有潜力用于增强红土的CBR和UCS，其峰值比例为干土重量的6%MK，超过该比例，土壤的强度形成会下降。

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Effect of metakaolin on the mechanical properties of lateritic soil

The effect of varying additions of metakaolin (MK) on the mechanical properties of lateritic soil to be utilized in the construction of pavement foundations has been studied. The preliminary test results show that the soil is highly plastic and lacks the sufficient mechanical ability to be used as a compacted subgrade/subbase for flexible pavement foundation. The kaolin was calcinated to form MK, which was utilized in proportions of 3%, 6%, 9%, and 12% by weight of the dry lateritic soil to stabilize it. California bearing ratio and unconfined compressive strength tests were conducted on the MK-treated lateritic soil to determine the suitability of the treated materials in the construction of compacted subgrade and / or subbase layers of flexible pavement. The stabilization test results show that MK has the potential to be utilized to strengthen the CBR and UCS of lateritic soil with a peak proportion of 6% MK by weight of dry soil beyond which the soil experiences a decline in strength formation.

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来源期刊

Geotechnical Research ENGINEERING, GEOLOGICAL-

CiteScore

4.50

自引率

26.30%

发文量

审稿时长

12 weeks

期刊介绍： Geotechnical Research covers the full scope of geotechnics and its related disciplines including: Soil, rock and fluid mechanics; geoenvironmental engineering; geothermal engineering; geotechnical design and construction issues; analytical and numerical methods; physical modelling; micromechanics; transportation geotechnics; engineering geology; environmental geotechnology; geochemistry; geohydrology and water management.