Behavior of Compacted Soil-Fly Ash-Carbide Lime Mixtures

Consoli, Nilo César; Prietto, Pedro Domingos Marques; Carraro, J. Antônio H.; Heineck, Karla Salvagni

doi:10.1061/(asce)1090-0241(2001)127:9(774)

Cited by 182 publications

(50 citation statements)

References 14 publications

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“…2 that BRS (25z FA) mixture pH variation with lime addition (ICL method) results are very similar to the BRS pH tests. So, based on such results, 3z of lime is the minimum amount of lime chosen for all mixtures studied (BRS, BRS (12.5z FA), BRS (25z FA)), besides of 5z, 7z and 9z (such percentages were chosen considering international experience with soil-‰y ash-lime (Mitchell, 1981;Consoli et al, 2001Consoli et al, , 2008). …”

Section: Methodsmentioning

confidence: 99%

Parameters Controlling Strength of Industrial Waste-Lime Amended Soil

Consoli

Rosa

Saldanha

2011

Soils and Foundations

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Unconˆned compression tests and suction measurements were carried out in the present work on sandy specimens with distinct Class F ‰y ash amounts, lime contents, porosities and curing periods to assess key parameters controlling strength of ‰y ash-lime amended soil. A special eŠort has been allocated in order to develop a dosage methodology for ‰y 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 unconˆned compressive strength (UCS) increased linearly with the amount of lime for soil-‰y ash-lime mixtures at all curing time periods studied. A power functionˆts better the relation UCS-porosity for soil-‰y ash-lime mixtures. The bigger the amount of ‰y 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 coe‹cient (in this case a unique value-0.12-was found for all soil-‰y 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 unconˆned compressive strength of the soil studied (UCS varies non-linearly with the porosity/volumetric lime content ratio in the case of ‰y ash-lime addition).

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Section: Methodsmentioning

confidence: 99%

Parameters Controlling Strength of Industrial Waste-Lime Amended Soil

Consoli

Rosa

Saldanha

2011

Soils and Foundations

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“…[19][20][21][22]. In case of having an improved layer over a weak soil, once failure occurs, the failure undergoes tensile cracks in the bottom of the stabilized layer; hence, tensile strength estimation becomes a necessity.…”

Section: Introductionmentioning

confidence: 99%

Parameters Controlling Tensile Strength of Zeolite-Cemented Sands

Khajeh¹,

MolaAbasi

Semsani³

2017

Scientia Iranica

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Abstract. Treating soil with cement and zeolite is widely used in soil stabilization. This research intends to quantify the impact of cement and zeolite contents, porosity index, and voids/cement ratio on zeolite cemented sands by the splitting tensile strength (t) assessment. The approach of splitting tensile tests using specimens by di erent zeolite replacement percentages was followed. Results indicated that cement was replaced by zeolite at optimum proportion of 30%. Then, improved values of t by the e ect of zeolite and cement chemical properties in the cement sand specimens were attained. Zeolite can have a more signi cant e ect on a compacted mixture if its cement content and porosity increase. In this paper, it is shown that for the zeolite cemented sands, t increases by increase in cement content (C) and reduction in porosity (n); and a power function is welladapted to t both t C and t n. Afterwards, good correlations are obtained between voids/cement ratio (n=c) and the splitting tensile strength ( t ) of the sand-zeolite-cement studied. Finally, based on a number of input variables, namely, porosity (n), replacement of cement by zeolite (Z), and cement content (C), considering the regression approach, an equation is suggested to predict t. Moreover, it is shown that the evolved equation could successfully predict the tensile strength.

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“…7, the unconfined compressive strength (q u ) data of two constant dry densities (1.283 and 1.467 g/cm 3 ) containing equal amount of fly ash (30%) and salt (0%) but different percent (1, 2, 3 and 5%) of lime content is exhibited. It can be observed that the q u is the function of lime content and dry density.…”

Section: Effect Of Lime and Fly Ashmentioning

confidence: 98%

“…In order to investigate the effect of sodium chloride, three NaCl solution in tap water with 0, 4 and 8% (0, 40 and 80 g/L) NaCl were used for preparing specimen at 10% moisture content by wet compaction method. The dry density was maintained at 1.283, 1.467 and 1.558 g/cm 3 .…”

Section: Experimental Programmentioning

confidence: 99%