Next Article in Journal
Electrically Conductive Polyetheretherketone Nanocomposite Filaments: From Production to Fused Deposition Modeling
Previous Article in Journal
Synthesis and Properties of Silk Fibroin/Konjac Glucomannan Blend Beads
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Polymers 2018, 10(8), 924; https://doi.org/10.3390/polym10080924

An Experimental Study on the Shear Behaviors of Polymer-Sand Composite Materials after Immersion

1
School of Earth Sciences and Engineering, Hohai University, Nanjing 210098, China
2
Council of Scientific and Industrial Research (CSIR)-Central Building Research Institute (CBRI), Roorkee 247667, India
*
Author to whom correspondence should be addressed.
Received: 26 July 2018 / Revised: 12 August 2018 / Accepted: 14 August 2018 / Published: 18 August 2018
Full-Text   |   PDF [6587 KB, uploaded 18 August 2018]   |  

Abstract

Sand mixed with geotextile/fiber/cement/lime or non-traditional chemical additives to form composite materials is recognized as an effective method for improving the sand properties. In this work, the variation in properties of composite materials after immersion is reported which has rarely appeared in the literature. The focus of this study is to evaluate the shear behaviors of polymer-sand composite material after immersion with direct shear tests. Several factors which may influence the shear behaviors after immersion are analyzed. The results demonstrate that this composite material still has good shear behaviors after immersion when compared to the purely sand material. The shear behaviors are improved with an increment in the curing time, polymer content and sand dry density while there is a decrease in the shear behaviors with increasing immersion time. The interaction between sand particles and the polymer are analyzed with Scanning Electron Microscope (SEM). The polymer membranes are formed by polymer enwrapping and connected sand particles to build an elastic and viscous structure in the sand that increases the interlocking forces between sand particles and decreases the void ratio of this material. The membranes are softened in water resulting in a decrease in the shear strength. Moreover, other factors affect the shear behaviors by improving the completeness and stability of this structure. View Full-Text
Keywords: polymers; sand; composite materials; shear behavior; immersion polymers; sand; composite materials; shear behavior; immersion
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Liu, J.; Bai, Y.; Li, D.; Wang, Q.; Qian, W.; Wang, Y.; Kanungo, D.P.; Wei, J. An Experimental Study on the Shear Behaviors of Polymer-Sand Composite Materials after Immersion. Polymers 2018, 10, 924.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top