PARAMETERS CONTROLLING STRENGTH OF INDUSTRIAL WASTE-LIME AMENDED SOIL

SOILS AND FOUNDATIONS

NILO CESAR CONSOLI¹  AMANDA DALLA ROSA¹  RODRIGO BECK SALDANHA¹ 

[1] Department of Civil Engineering, Federal University of Rio Grande do Sul

关键词: compaction;    compressive strength;    lime;    soil stabilization;    unconfined compression test;    (IGC: D9/D10);   

DOI  :  10.3208/sandf.51.265

学科分类：建筑学

来源: Japanese Geotechnical Society / Jiban Kogakkai

【 摘 要 】

References(19)Cited-By(1)Unconfined compression tests and suction measurements were carried out in the present work on sandy specimens with distinct Class F fly ash amounts, lime contents, porosities and curing periods to assess key parameters controlling strength of fly ash-lime amended soil. A special effort has been allocated in order to develop a dosage methodology for fly ash-lime improved soils based in a rational criterion, as it exists in the concrete technology where the water/cement ratio plays a fundamental role in the assessment of the target strength. The results show that the unconfined compressive strength (UCS) increased linearly with the amount of lime for soil-fly ash-lime mixtures at all curing time periods studied. A power function fits better the relation UCS-porosity for soil-fly ash-lime mixtures. The bigger the amount of fly ash and the curing time, the larger the UCS for any given porosity and lime content. Finally, the porosity/volumetric lime content ratio, in which volumetric lime content is adjusted by a coefficient (in this case a unique value-0.12-was found for all soil-fly ash-lime mixtures and all curing periods studied) to end in single correlations for each curing period, show to be a good parameter in the evaluation of the unconfined compressive strength of the soil studied (UCS varies non-linearly with the porosity/volumetric lime content ratio in the case of fly ash-lime addition).

【 授权许可】

Unknown