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Open AccessArticle

Experimental Study on Artificial Cemented Sand Prepared with Ordinary Portland Cement with Different Contents

by Dongliang Li 1,2,*, Xinrong Liu 1,2,† and Xianshan Liu 1,2,†
1
Key Laboratory of New Technology for Construction of Cities in Mountain Area (Chongqing University), Ministry of Education, Chongqing 400045, China
2
School of Civil Engineering, Chongqing University, Chongqing 400045, China
*
Author to whom correspondence should be addressed.
These authors contributed equally to this work.
Academic Editor: Jorge de Brito
Materials 2015, 8(7), 3960-3974; https://doi.org/10.3390/ma8073960
Received: 20 May 2015 / Revised: 23 June 2015 / Accepted: 24 June 2015 / Published: 2 July 2015
(This article belongs to the Section Structure Analysis and Characterization)
Artificial cemented sand test samples were prepared by using ordinary Portland cement (OPC) as the cementing agent. Through uniaxial compression tests and consolidated drained triaxial compression tests, the stress-strain curves of the artificial cemented sand with different cementing agent contents (0.01, 0.03, 0.05 and 0.08) under various confining pressures (0.00 MPa, 0.25 MPa, 0.50 MPa and 1.00 MPa) were obtained. Based on the test results, the effect of the cementing agent content (Cv) on the physical and mechanical properties of the artificial cemented sand were analyzed and the Mohr-Coulomb strength theory was modified by using Cv. The research reveals that when Cv is high (e.g., Cv = 0.03, 0.05 or 0.08), the stress-strain curves of the samples indicate a strain softening behavior; under the same confining pressure, as Cv increases, both the peak strength and residual strength of the samples show a significant increase. When Cv is low (e.g., Cv = 0.01), the stress-strain curves of the samples indicate strain hardening behavior. From the test data, a function of Cv (the cementing agent content) with c′ (the cohesion force of the sample) and Δϕ′ (the increment of the angle of shearing resistance) is obtained. Furthermore, through modification of the Mohr-Coulomb strength theory, the effect of cementing agent content on the strength of the cemented sand is demonstrated. View Full-Text
Keywords: artificial; cemented sand; ordinary Portland cement; test artificial; cemented sand; ordinary Portland cement; test
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Li, D.; Liu, X.; Liu, X. Experimental Study on Artificial Cemented Sand Prepared with Ordinary Portland Cement with Different Contents. Materials 2015, 8, 3960-3974.

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