Investigation of Combined Effect of Mixture Variables on Mechanical Properties of Cement Treated Demolition Waste

Authors

  • Dongxing Xuan Delft University of Technology
  • Lambert J. M. Houben Delft University of Technology
  • Andra A. A. Molenaar Delft University of Technology
  • Zhonghe Shui Wuhan University of Technology

DOI:

https://doi.org/10.4186/ej.2012.16.4.107

Keywords:

Construction and demolition waste, mechanical properties, mixture variables, response surface technique.

Abstract

One of high efficient ways to reuse the recycled construction and demolition waste (CDW) is to consider it as a road base material. The recycled CDW however is mainly a mix of recycled masonry and concrete with a wide variation in composition. This results that the mechanical properties of cement treated demolition waste are not only determined by cement content and degree of compaction, but also by the composition ratio of masonry to concrete. This paper investigates the combined effect of those three mixture variables on the mechanical properties of cement treated demolition waste by using response surface technique. The evaluated mechanical properties include the unconfined compressive strength (UCS), the elastic modulus and their ratio. Analytical results indicate that increasing the degree of compaction is an economic technique to obtain the required mechanical properties, but it is not an efficient method to enhance the admissible elastic strain (the ratio of UCS to E). Considering the pavement structure design with cement treated demolition base, improvement of its structural performance needs adjusting the masonry content and the cement content.

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Author Biographies

Dongxing Xuan

Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, the Netherlands

Lambert J. M. Houben

Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, the Netherlands

Andra A. A. Molenaar

Faculty of Civil Engineering and Geosciences, Delft University of Technology, Stevinweg 1, 2628 CN Delft, the Netherlands

Zhonghe Shui

School of Materials Science and Engineering, Wuhan University of Technology, Luoshi Road No. 122, 430070 Wuhan, China

Published

Vol 16 No 4, Mar 14, 2012

How to Cite

[1]
D. Xuan, L. J. M. Houben, A. A. A. Molenaar, and Z. Shui, “Investigation of Combined Effect of Mixture Variables on Mechanical Properties of Cement Treated Demolition Waste”, Eng. J., vol. 16, no. 4, pp. 107-116, Mar. 2012.