Lime injection technique to improve the behaviour of soft marine clays
TL;DR: In this article, a test program was carried out by injecting lime into a soft marine clay in a test tank, which showed good promise for the use of lime grouting in the treatment of weak marine clayey deposits.
About: This article is published in Ocean Engineering.The article was published on 1994-01-01. It has received 11 citations till now. The article focuses on the topics: Lime & Calcium oxide.
Citations
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01 Jan 2004
TL;DR: The effectiveness of using a sub-surface lime-fly ash barrier to reduce the oxidation of a pyritic soil layer and to improve groundwater and surface water quality was investigated for land affected by acid sulphate soils near Berry in southeastern NSW, Australia as mentioned in this paper.
Abstract: The effectiveness of using a sub-surface lime-fly ash barrier to reduce the oxidation of a pyritic soil layer and to improve groundwater and surface water quality was investigated for land affected by acid sulphate soils near Berry in southeastern NSW, Australia Prior to the installation of the lime-fly ash barrier, groundwater and surface water analyses indicated a highly acidic environment High concentrations of dissolved aluminium, total iron and sulphate in the groundwater were a result of falling groundwater tables and biotic oxidation Traditional management techniques of ground water manipulation, via floodgates or weirs, would be rendered ineffective in arresting biotic oxidation where the pyrite layer is submerged The study combined field and laboratory analysis in order to determine the feasibility of the lime-fly ash barrier at the study site A comprehensive field study incorporated the installation of piezometers and observation wells to determine the level of the phreatic surface along with the monitoring of water quality parameters at the site of the lime-fly ash barrier, and also floodgate sites and the site of the self-regulating tilting weir The installation of the lime-fly ash barrier was undertaken by the pumping of a slurry through boreholes via pressure pumping The subsurface lime-fly ash barrier, as an acid sulphate soil remediation technique, was shown to significantly improve groundwater quality Groundwater pH increased to values between 45 and 55 The concentration of the pyritic oxidation products, acidic cations Al and Fe, basic cations Ca and Mg and anions Cl and SO4, also, on average decreased in the groundwater after the installation of the lime-fly ash barrier A comparison between the average groundwater table elevations before and after the installation of the barrier also indicated a perched water table, which would reduce the exposure of pyritic soil to oxygen, and in turn reduce pyritic oxidation and the generation of acidic products The Lime-fly ash barrier is effective in remediating acid sulphate soils in areas in which floodgates and weirs cannot be installed A comparison of the result shows that the lime-fly ash barrier had greater success in increasing the groundwater pH than the self-regulating tilting weir The lime-fly ash barrier treats acid sulphate soils and the related environmental problems before they occur, whereas, the floodgates treat the pyrite oxidation products generated after they have been discharged into the flood mitigation drains Significantly greater concentrations of Al, Fe and SO4 were found in the groundwater at the floodgate sites
7 citations
TL;DR: In this article, the mineralogical studies of some Cochin marine clays were carried out using XRD technique and the physical and chemical properties of these clays are also reported.
7 citations
Dissertation•
01 Jan 2013
TL;DR: In this paper, the authors present a list of abbreviations of ÖZ and ABBREVIATIONS, including the abbreviations listed in Table 4.1.1 and Table 5.2.
Abstract: .......................................................................................................... iii ÖZ ........................................................................................................................... v DEDICATION ...................................................................................................... vii ACKNOWLEDGMENT ....................................................................................... viii TABLE OF CONTENTS ........................................................................................ ix LIST OF TABLES ................................................................................................ xiii LIST OF FIGURES ............................................................................................... xv LIST OF ABBREVIATIONS ............................................................................. xxiii
7 citations
Dissertation•
01 Apr 2015
TL;DR: A thesis submitted in partial fulfilment of the University’s requirements for the award of the degree of Doctor of Philosophy was submitted in this article, which was submitted to the University of Edinburgh.
Abstract: A thesis submitted in partial fulfilment of the University’s requirements for the
award of the degree of Doctor of Philosophy
4 citations
TL;DR: In this article, the effect of fine content (FC) on the artificially cemented gravel-silty clay mixed soils (CMS) in terms of strength, deformation, effective stress path and pore pressure response by undrained cyclic triaxial tests were also conducted on remolded gravelsilite clay mixed soil (RMS) under the same test conditions in order to evaluate the effect provided by the cementitious material.
Abstract: The aim of this paper is to provide an insight into the effect of fine content (FC) on the artificially cemented gravel-silty clay mixed soils (CMS) in terms of strength, deformation, effective stress path and pore pressure response by undrained cyclic triaxial tests. In addition, some cyclic triaxial tests were also conducted on remolded gravel-silty clay mixed soils (RMS) under the same test conditions in order to evaluate the effect of cementation provided by the cementitious material. The corresponding cyclic responses, such as the generation and accumulation of axial strain, pore pressure and effective stress path, are compared across a range of CMS and RMS. A constant 5% percentage (by weight) of calcium oxide in mixed soils with four different ratios of fine content (13%, 30%, 50% and 70%) are tested under four types of confining pressures, 50 kPa, 100 kPa, 200 kPa and 300 kPa respectively. The results demonstrate that: an increase in fine content leads to decrease in both strength and liquefaction resistance, but accelerate the strain accumulation and pore pressure development. The cyclic responses of CMS exhibit “hysteresis” significantly compared with those of RMS due to the bonding strength between soil particles.
2 citations
References
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Book•
01 Jan 2014
TL;DR: Soil chemical analysis, Soil Chemical Analysis (SCA), this paper, is a technique for soil chemical analysis that is used in the field of Soil Chemistry and Chemical Engineering.
Abstract: Soil chemical analysis , Soil chemical analysis , مرکز فناوری اطلاعات و اطلاع رسانی کشاورزی
13,439 citations
TL;DR: In this paper, a laboratory investigation on the quicklime stabilization of sensitive clays has shown that significant strength increase can be obtained if enough water content above the liquid limit is added to the clays.
Abstract: A laboratory investigation on the quicklime stabilization of sensitive clays has shown that, even at a water content above the liquid limit, significant strength increase can be obtained if enough ...
261 citations
Journal Article•
TL;DR: The first part of the investigation has been conducted at the University of Illinois at Urbana-Champaign as discussed by the authors, where the X-ray experiments were used to study the reaction of the hydrated limes with the soil.
Abstract: THE USE OF HYDRATED LIME HAS BEEN GROWING IN THE FIELD OF SOIL STABILIZATION ALTHOUGH IT HAS BEEN USED FROM COAST TO COAST IN THE UNITED STATES AND BY SOME NATIONS ABROAD, THE REACTION OF HYDRATED LIME WITH THE SOIL IS STILL A MYSTERY, PARTICULARLY WITH RESPECT TO ITS RELATIVE EFFECTIVENESS AND RATES OF REACTION WITH VARIOUS SOILS A RESEARCH PROJECT TO DETERMINE THE REACTION OF HYDRATED LIME AND SOIL IS UNDER WAY AT THE UNIVERSITY OF ILLINOIS BECAUSE OF THE COMPLEXITY OF SOILS AND BECAUSE LIME IS OF GREATER BENEFIT TO A HEAVY CLAY SOIL, THE FIRST PART OF THE INVESTIGATION HAS BEEN DEVOTED TO A STUDY OF THE EFFECTS OF HYDRATED LIME ON PURE CLAY MINERALS BY THE AID OF X-RAY DIFFRACTION AND DIFFERENTIAL THERMAL ANALYSIS, IT HAS BEEN POSSIBLE TO WATCH AND IDENTIFY THE REACTIONS WHICH TAKE PLACE THE FIRST REACTION, WHICH IS BROUGHT ABOUT IMMEDIATELY WHEN LIME IS ADDED, IS REPLACEMENT OF ABSORBED IONS BY CALCIUM IONS, THE SECOND, FORMATION OF A SERIES OF NEW MINERALS, THE THIRD, CARBONATION OF THE HYDRATED LIME THESE REACTIONS, ILLUSTRATED BY TYPICAL X-RAY EXAMPLES, OFFER DEFINITE PROOF AS TO WHY DIFFERENT RATES OF REACTION OCCUR WITH DIFFERENT SOILS /AUTHOR/
218 citations
TL;DR: A review of the recent research literature concerning the geology, mineralogy, and physicochemistry of soft soils in Canada is presented in this article, where soft clays are considered from three viewpoints: (1) their geology and mineralogy; (2) their physicochemical properties; and (3) their properties.
Abstract: A review of the recent research literature concerning the geology, mineralogy, and physicochemistry of soft soils in Canada is presented. Soft clays are considered from three viewpoints: (1) their ...
157 citations