Laboratory Investigation of the Mechanical Properties of a Rubber–Calcareous Sand Mixture: The Effect of Rubber Content
Open Access
- 21 September 2020
- journal article
- research article
- Published by MDPI AG in Applied Sciences
- Vol. 10 (18), 6583
- https://doi.org/10.3390/app10186583
Abstract
This paper introduces a rubber–calcareous sand mixture as a lightweight building material in offshore engineering. The mechanical properties of mixtures of varying rubber contents were investigated by performing a one-dimensional (1-D) compression test in a modified oedometer cell, as well as a resonant column test. A discussion on the test results, along with detailed interpretations regarding the role of rubber chips in the mixtures, are provided. It was found that the virgin compression curves of the rubber–calcareous sand mixtures tended to converge at a certain stress level, whilst the stress level depended on the rubber content. Moreover, the relative breakage was examined by comparing the particle size distribution curves of the calcareous sand before and after the compression test. It was shown that the grain crushing of calcareous sand was less remarkable with the inclusion of rubber chips. Furthermore, the small strain shear modulus (G0) of the mixtures decreased with the rubber content, yet the modulus reduction and damping curves exhibited little difference for the specimens of varying rubber contents.Keywords
Funding Information
- National Natural Science Foundation of China (41807226; 41927806; 41790443; 41941019)
This publication has 28 references indexed in Scilit:
- Small-strain shear modulus of volcanic granular soil: An experimental investigationSoil Dynamics and Earthquake Engineering, 2016
- Shear wave velocity and stiffness of sand: the role of non-plastic finesGéotechnique, 2016
- Engineering characteristics of the calcareous sand in Nansha Islands, South China SeaEngineering Geology, 2011
- Characteristics of Rubber-Sand Particle Mixtures according to Size RatioJournal of Materials in Civil Engineering, 2010
- Particle breakage during cyclic triaxial loading of a carbonate sandGéotechnique, 2009
- Dynamic Properties of Granulated Rubber/Sand MixturesGeotechnical Testing Journal, 2000
- Environmental Effects of Recycled Rubber in Light-Fill ApplicationsRubber Chemistry and Technology, 2000
- Shredded Tires and Rubber-Sand as Lightweight BackfillJournal of Geotechnical and Geoenvironmental Engineering, 1999
- Cyclic Behaviour of Pile Groups in Calcareous SedimentsSoils and Foundations, 1994
- Crushing of Soil ParticlesJournal of Geotechnical Engineering, 1985