Cement treated recycled demolition waste as a road base material

Abstract

To enhance the performance of mix granulate road base courses by cement treatment. The mechanical properties of cement treated mix granulate (CTMG) were studied, which was designed with 65% crushed masonry and 35% crushed concrete by mass. The central composite design was employed to prepare specimens with different levels of cement content and degree of compaction. All specimens were cured in a fog room at 20°C for a specific number of days. The compressive strength and the indirect tensile strength were determined through the monotonic compression and indirect tension tests. Effective prediction models for the mechanical properties of CTMG, in relation to the cement content, the degree of compaction and the curing time, were successfully established for a mix containing 65% crushed masonry and 35% crushed concrete by mass.

Keywords

recycled masonry / crushed concrete / road base / cement treated mix granulates / mechanical properties

References

[1] Ferguson J. Managing and Minimizing Construction Waste: a Practical Guide[M], 1995 London, UK Thomas Telford Publications

[2] Hansen TC. Recycling of Demolished Concrete and Masonry[R]. Report of Technical Committee 37-DRC, RILEM, 1992

[3] Kasai Y. The Second International RILEM Symposium on Demolition and Reuse of Concrete and Masonry[J]. Materials and Structures, 1989, 23: 312-319.

[4] Shui Z.H., Xuan D.X., Wan H.W., Cao B.B. Rehydration Reactivity of Recycled Mortar from Concrete Waste Experienced to Thermal Treatment[J]. Construction Building Materials, 2008, 22: 1723-1729.

[5] Ravindrarajah R.S., Tam C.T. Recycled Concrete as Fine and Coarse Aggregate in Concrete[J]. Magazine of Concrete Research, 1987, 39: 214-220.

[6] Khalaf F.M., DeVenny A.S. Recycling of Demolished Masonry Rubble as Coarse Aggregate in Concrete: Review[J]. Journal of Materials in Civil Engineering, 2004, 16: 331-340.

[7] Limbachiya M.C., Leelawat T., Dhir R. Use of Recycled Concrete Aggregate in High-strength Concrete[J]. Materials and Structures, 2000, 33: 574-580.

[8] Van Niekerk A.A. Mechanical Behavior and Performance of Granular Bases and Sub-Bases in Pavements[D], 2002 the Netherlands Delft University of Technology

[9] Molenaar A.A.A. Cohesive and Non-Cohesive Soils and Unbound Granular Materials for. Bases and Sub-bases in Roads[R], 2005 the Netherlands Delft University of Technology

[10] Poon C.S., Chan D. Feasible Use of Recycled Concrete Aggregates and Crushed Clay Brick as Unbound Road Sub-base[J]. Construction Building Materials, 2006, 20: 578-585.

[11] Xuan D.X. Literature Review of Research Project: Structural Properties of Cement Treated Materials[R], 2009 the Netherlands Section Road and Railway Engineering, Delft University of Technology

[12] Muraya P.M. Permanent Deformation of Asphalt Mixes[D], 2007 the Netherlands Delft University of Technology

[13] Erkens S.M.J.G. Asphalt Concrete Response (ACRe)[D], 2002 the Netherlands Delft University of Technology

[14] Sherwood P.T. Soil Stabilization with Cement and Lime[N]. State of the ART Review, 1995 London HMSO press

[15] Ronald L.T., Jon A.E., Ernest J.B., James K.M., Marshall R.T. Soil Stabilization in Pavement Structures[M], a User’s Manual-Volume 1: Mixture Design Considerations. FHWA-IP-80-2, 1979 Washington DC, USA Federal Highway Administration Department of Transportation

[16] TRH 13. Cementitious Stabilizers in Road Construction. National Institute for Transport and Road Research[R], 1986 Pretoria, South Africa Committee of State Road Authorities

[17] Williams R.I.T. Cement-Treated Pavement: Materials, Design and Construction[M], 1986 England Elsevier Applied Science Publishers