Field and laboratory behaviour of fine-grained soil stabilized with lime

Author:

Consoli Nilo Cesar1,Bittar Marin Eduardo José2,Quiñónez Samaniego Rubén Alejandro1,Scheuermann Filho Hugo Carlos1,Cristelo Nuno Miguel Cordeiro3

Affiliation:

1. Graduate Programme in Civil Engineering, Universidade Federal do Rio Grande do Sul, Brazil.

2. School of Civil, Environmental and Mining Engineering, The University of Western Australia, Australia.

3. Lecturer, School of Engineering, Universidade de Trás-os-Montes e Alto Douro, Portugal.

Abstract

Fine-grained soils, due to their high plasticity, possess great shrinkage potential and high compressibility and are responsible for very substantial maintenance costs during the service life of the associated infrastructures. Stabilization of such soils with lime is one of the most effective procedures to mitigate these undesirable characteristics and, at the same time, to enhance their mechanical properties. Current research seeks, through field and laboratory tests, to quantify the influence of calcitic hydrated lime on the strength and deflection characteristics clayey soil from the Paraguayan region of Chaco. The influence of different dry unit weights, lime amounts, and curing periods on the strength and deflection of a Paraguayan clay stabilized with lime was assessed. The present work shows, for the first time ever, that the porosity/lime index is the proper parameter to be used in the field when dealing with the strength of clay–lime bases of pavements. Hence, the results presented herein are a contribution to understanding the conditions in which these soils can be stabilized to be used in infrastructural applications.

Publisher

Canadian Science Publishing

Subject

Civil and Structural Engineering,Geotechnical Engineering and Engineering Geology

Reference17 articles.

1. ASTM. 2006. Standard classification of soils for engineering purposes. ASTM Standard D2487, American Society for Testing and Materials, West Conshohocken, Philadelphia, Pa.

2. ASTM. 2010. Standard test method for compressive strength of cylindrical concrete specimens. ASTM Standard C39, American Society for Testing and Materials, West Conshohocken, Philadelphia, Pa.

3. ASTM. 2011a. Standard specification for quicklime, hydrated lime, and limestone for environmental uses. ASTM Standard C1529, American Society for Testing and Materials, West Conshohocken, Philadelphia, Pa.

4. ASTM. 2011b. Standard test method for measuring deflections with a light weight deflectometer (LWD). ASTM Standard E2835, American Society for Testing and Materials, West Conshohocken, Philadelphia, Pa.

5. ASTM. 2012. Standard test methods for laboratory compaction characteristics of soil using standard effort (600 kN-m/m3). ASTM Standard D698, American Society for Testing and Materials, West Conshohocken, Philadelphia, Pa.

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