Journal Published Online: 24 August 2018
Volume 42, Issue 2

Soil–Water Characteristic Curve and Permeability Function of Recycled Concrete Aggregates Coated with Oil or Wax

CODEN: GTJODJ

Abstract

Recycled concrete aggregate (RCA) is known to be a hydrophilic material. An attempt has been made to convert RCA into a hydrophobic material by coating it separately with oil or wax. Both oil and wax are known to increase the hydrophobicity of soil. Although the soil–water characteristic curve (SWCC) and permeability function of coarse-grained aggregates have been investigated, the effect of the introduction of hydrophobicity (coating it with oil or wax) into the coarse aggregates to their SWCC and permeability function has not been fully understood. The SWCC indicates that coating RCA with oil or wax modifies the drying and wetting curves as compared with RCA without any coating. The air-entry values and water-entry values are also modified upon coating. RCAs coated with oil or wax were found to prevent ingress of water during the wetting test for SWCC. The permeability function of RCAs is also modified.

Author Information

Rahardjo, Harianto
Department of Civil and Environmental Engineering, Nanyang Technological University, Singapore, Singapore
Prasad, Arun
Department of Civil Engineering, Indian Institute of Technology (BHU), Varanasi, Varanasi, India
Krisnanto, Sugeng
Department of Civil and Environmental Engineering, Geotechnical Engineering Research Group, Bandung Institute of Technology, Bandung, Indonesia
Leong, Eng-Choon
Department of Civil and Environmental Engineering, Nanyang Technological University, Singapore, Singapore
Wang, Chien Looi
Building Research Institute, Housing and Development Board, Toa Payoh, Singapore, Singapore
Pages: 14
Price: $25.00
Related
Reprints and Permissions
Reprints and copyright permissions can be requested through the
Copyright Clearance Center
Details
Stock #: GTJ20170404
ISSN: 0149-6115
DOI: 10.1520/GTJ20170404