Arias-Trujillo, Juana;
Matias-Sanchez, Agustin;
Cantero, Blas;
Lopez-Querol, Maria Susana;
(2022)
Mechanical Stabilization of Aeolian Sand with Ceramic Brick Waste Aggregates.
Construction and Building Materials
, 363
, Article 129846. 10.1016/j.conbuildmat.2022.129846.
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Abstract
The use of ceramic brick waste is a sustainable and eco-friendly alternative for the stabilization of soils in comparison with other more traditional additives, such as cement. The addition of different types of construction wastes to soils has been so far mainly investigated for cementitious materials rather than for earthworks projects and civil infrastructures, and even less for aeolian sand. In this research, ceramic brick waste aggregates have been experimentally studied as an option to improve the geotechnical properties of aeolian sand from Jeddah (Saudi Arabia). Three different percentages of replacement have been considered, 15 %, 30 % and 45 %, since such high replacements have not been investigated in the literature. This research is focused on employing aeolian sand for earthworks applications. The experimental program is based on size analysis, compaction and California Bearing Ratio (CBR) tests specially modified to manage the represent different lateral confinement in the samples, and the results are confirmed by scanning electron microscope (SEM). Experimental results demonstrate an improvement of the overall geotechnical properties of the aeolian sand after mixing it with ceramic brick waste aggregates by means of the correction of the missing particle fractions and the addition of more aggregated particles, improving the coefficient of uniformity (Cu) from 2.37 (aeolian sand) up to 3.56 (45 %-brick waste). The CBR obtained for the two higher replacements is around 33 % in confined conditions (triple than aeolian sand) and almost 1 % for unconfined conditions independently of the replacement. An optimal replacement of 30 % has been identified and the possible crushing and breakage of the waste aggregates are discarded. This mechanical stabilization can be considered feasible and environmentally suitable.
| Type: | Article |
|---|---|
| Title: | Mechanical Stabilization of Aeolian Sand with Ceramic Brick Waste Aggregates |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.conbuildmat.2022.129846 |
| Publisher version: | https://doi.org/10.1016/j.conbuildmat.2022.129846 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Aeolian sand, Ceramic brick waste aggregate, Eco-friendly soil stabilization, Confined and Unconfined Conditions |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10160006 |
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