American Society of Civil Engineers


Compressive and Indirect Tensile Strengths of Cement-Treated Mix Granulates with Recycled Masonry and Concrete Aggregates


by Dongxing Xuan, (corresponding author), (Faculty of Civil Engineering and Geosciences, Section Road and Railway Engineering, Delft Univ. of Technology, P.O. Box 5048, 2600 GA Delft, The Netherlands. E-mail: d.xuan@tudelft.nl), André A. A. Molenaar, (Faculty of Civil Engineering and Geosciences, Section Road and Railway Engineering, Delft Univ. of Technology, P.O. Box 5048, 2600 GA Delft, The Netherlands. E-mail: A.A.A.Molenaar@tudelft.nl), and Lambert J. M. Houben, (Faculty of Civil Engineering and Geosciences, Section Road and Railway Engineering, Delft Univ. of Technology, P.O. Box 5048, 2600 GA Delft, The Netherlands. E-mail: L.J.M.Houben@tudelft.nl)

Journal of Materials in Civil Engineering, Vol. 24, No. 5, May 2012, pp. 577-585, (doi:  http://dx.doi.org/10.1061/(ASCE)MT.1943-5533.0000401)

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Document type: Journal Paper
Abstract: Reuse of construction and demolition waste (CDW) as a road base material is one of the effective methods to reduce environmental effects caused by CDW dumping in landfills. To explore the feasibility to reuse CDW as a cement-treated material, this paper investigated the compressive and indirect tensile strengths of cement-treated demolition waste. Because the recycled CDW is a mix of recycled masonry and concrete, different ratios of recycled crushed masonry-concrete aggregates by mass were chosen in this study. Four mixture variables (cement content, degree of compaction, masonry content, and curing time) and their influence on the mechanical properties of cement-treated mix granulates (CTMi Gr) were then considered. Experimental results showed that a general model to estimate the compressive and indirect tensile strengths of CTMi Gr can be established in relation to those four mixture variables. Compared with normal cement-treated granular materials, the masonry content is another unique factor to determine the mechanical properties of CTMi Gr and its failure pattern. Furthermore, this study showed that CTMi Gr may be designed to have a good mechanical strength as a cemented road base.


ASCE Subject Headings:
Construction industry
Recycling
Concrete
Cement
Granular media
Aggregates
Compressive strength

Author Keywords:
Construction and demolition waste
Road base
Recycled masonry
Recycled concrete
Cement-treated granular materials