Stabilisation of estuarine silt with lime and/or cement

Jauberthie, Raoul; Rendell, F; Rangeard, Damien; Molez, Laurent

doi:10.1016/j.clay.2010.09.004

Cited by 72 publications

(31 citation statements)

References 9 publications

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“…Quicklime is generally known to promote a strong aggregation and stabilization of the backfilled soil mainly by forcing immediate dehydration and particle cementation processes (Hartge, 1959;Czeratzki, 1972;Hartge and Ellies, 1977;Haynes and Naidu, 1998;Witt, 2002;Metelková et al, 2012). It is used, e.g., in civil engineering for soil stabilization of embankments, road sub-bases or foundations for small buildings (Arabi and Wild, 1989;Jauberthie et al, 2010) or for fertilization and structural improvements in agricultural soils (Haynes and Naidu, 1998;Tang et al, 2003). However, changes in physical parameters due to CaO addition with focus on alterations in pore properties have scarcely been investigated so far (Hartge and Ellies, 1977;Metelková et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Changes in soil aeration and soil respiration of simulated grave soils after quicklime application

Mordhorst

Zimmermann

Fleige

et al. 2017

J. Plant Nutr. Soil Sci.

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The decomposition of buried human remains on cemeteries can be delayed in poorly aerated graves due to high water levels and a low permeable pore system for oxygen and water transport. With aim to improve the soil aeration properties in the burial environment, the addition of quicklime (CaO) to the grave backfill was tested. Quicklime is expected to promote a stronger aggregation and stabilization of the backfilled soil mainly by forcing an immediate dehydration and particle cementation processes. Two different grave simulations (without buried corpses) were prepared: (1) mixing the grave backfill with 20 kg m−3 quicklime (“CaO”) and (2) backfill without CaO (“NIL”) on a cemetery in Northern Germany. The soil type was a Terric Anthrosol (Stagnic) with a loamy sand texture. Undisturbed soil cores were taken from two depths before and after excavation and backfill at regular intervals of 3 months in order to analyze changes in (1) gaseous transport functions expressed by air‐filled porosity, air permeability (air permeameter), gas diffusivity (double chamber method) and related pore continuity indices as well as in (2) soil respiration (alkali trap method) representing microbial activity. Results clearly demonstrated a more conductive pore system in the CaO variant reflected by higher gas diffusivity and air permeability over 1 year compared to the NIL variant. Pore continuity indices also indicated a more connective pore system for the CaO variant. Effects of CaO application on soil respiration rate differed between the quarterly sampling times. Results indicated that microorganism were still active under alkaline soil conditions induced by CaO application, but the quantitative determination of biologically produced CO2 is influenced by chemical reactions when hydrated quicklime [Ca(OH)2] was reformed to limestone under consumption of CO2. The experiments indicate that the application of quicklime is a promising approach to improve aeration properties of grave soils and is therefore proposed as an adequate method to improve the aeration of burials on cemeteries.

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Section: Introductionmentioning

confidence: 99%

Changes in soil aeration and soil respiration of simulated grave soils after quicklime application

Mordhorst

Zimmermann

Fleige

et al. 2017

J. Plant Nutr. Soil Sci.

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“…These values were in the same range as those used by Jauberthie et al (2010). The stabilized samples were allowed to cure for seven (7) days before the strength test were carried out.…”

Section: Sample Preparationmentioning

confidence: 99%

Geotechnical properties of clayey soil stabilized with cement-sawdust ash for highway construction

Owamah¹,

Atikpo²,

Oluwatuyi³

et al. 2018

Journal of Applied Sciences and Environmental Management

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ABSTRACT:The study was conducted to investigate the different effects of cement-sawdust ash and cement on a clayey soil sampled from Mandate Lodge, Landmark University, Omu-Aran, Nigeria. The binder mix of cementsawdust ash (CSDA) was mixed in a ratio of 1:1. The CSDA and cement were added to the soil samples at varying percentages of 1.5, 3.0, 4.0, and 7.0% by weight of the soil. Atterberg limits and strength tests (unconfined compressive strength (UCS) and direct shear (DS) test) were performed on the samples to determine the suitability of the stabilized soil as a construction material in highway pavement.Atterberg limit test result showed that the addition of 7% cement decreased the liquid limit from 58% to 42% and plasticity index from 18% to 3%, while the addition of 7% CSDA decreased the liquid limit from 58% to 48% and plasticity index from 18% to 4%. The atterberg limit test results also showed that the stabilized clayey soil samples met the requirements of the Nigerian General Specifications of maximum plasticity index (PI) of 30% and liquid limit (LL) of a maximum of 50% when used as a subgrade material in highway construction. The strength test result showed that the strength values of the samples increased with binder addition and met with the requirement for use as a subgrade material in highway construction.

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“…As an example, the durability of a natural silt soil stabilized with Class C fly ash and cement was examined (Altun et al 2009); the effect of lime and cement inclusion in estuarine silt has been studied (Jauberthie et al 2010). The results show that an increase in the UCS and CBR values of silt can occur when mixed with lime and cement.…”

Section: Introductionmentioning

confidence: 99%

Strength of Cement Treated Piedmont Residual Silty Soils

Amir-Faryar¹,

Suter

Finnen

2017

Geotech Geol Eng

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Piedmont residual soils form a strip that extends from Alabama to New Jersey and comprise much of Virginia, Georgia, and the Carolinas. Thus, a better understanding of their strength properties is of paramount importance. One of the hallmarks of the soils within the Piedmont region is its silty nature. Although it is usually a common practice to use lime treatment for highly plastic clayey soils, no such agreement exists on the type of soil stabilization when dealing with fine-grained silty soils. Hence, the effects of cement stabilization on the strength of residual silt were studied. California bearing ratio (CBR) and unconfined compressive strength (UCS) testing was conducted. The study showed that cement can react with the silty soil and the addition of cement can lead to further increase in strength. Equations were developed correlating liquid limit to CBR as well as cement content to UCS. A multi-variable model function was also proposed correlating CBR and cement content to UCS of treated soils, and equations were developed for silty soils with standard proctor CBR samples and 95% degree of compaction as well as modified proctor CBR samples and 97% degree of compaction. The accuracy of the proposed function was validated using data developed for cement treated lateritic sandy soils.

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Stabilisation of estuarine silt with lime and/or cement

Cited by 72 publications

References 9 publications

Changes in soil aeration and soil respiration of simulated grave soils after quicklime application

Changes in soil aeration and soil respiration of simulated grave soils after quicklime application

Geotechnical properties of clayey soil stabilized with cement-sawdust ash for highway construction

Strength of Cement Treated Piedmont Residual Silty Soils

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