Show simple item record

dc.contributor.authorJitsangiam, Peerapong
dc.contributor.authorBoonserm, K.
dc.contributor.authorPhenrat, T.
dc.contributor.authorChummuneerat, Suphat
dc.contributor.authorChindaprasirt, P.
dc.contributor.authorNikraz, Hamid
dc.identifier.citationJitsangiam, P. and Boonserm, K. and Phenrat, T. and Chummuneerat, S. and Chindaprasirt, P. and Nikraz, H. 2015. Recycled Concrete Aggregates in Roadways: A Laboratory Examination of Self-Cementing Characteristics. Journal of Materials in Civil Engineering. 27 (10): 04014270.

This paper examines the self-cementing phenomenon of the road construction material known as recycled concrete aggregate (RCA). Two RCA types were selected as study materials: (1) high-grade RCA (HRCA), a quality RCA manufactured from relatively high-strength concrete structures; and (2) road base RCA (RBRCA), a high-grade RCA blend combined with brick and general clean rubble (road base material). Laboratory tests were performed to obtain the unconfined compressive strength, indirect tension dynamic modulus, and resilient modulus of the test samples to examine their hardening characteristics when subjected to varying curing periods. These tests were performed in conjunction with microstructure analyses from X-ray diffractometry (XRD) and scanning electron microscope (SEM) techniques. The HRCA samples, which were prepared and subjected to varying curing conditions, transformed from an initially unbound material into a bound (fully stabilized) material. The results of XRD and SEM analyses clearly demonstrate that secondary hydration occurred. The RBRCA samples were able to maintain their unbound granular properties, with nonsignificant self-cementing, thus supporting the hypothesis that the mixing of nonactive materials such as bricks and clean rubble into RCA will lessen the tendency of RCA toward self-cementing.

dc.publisherAmerican Society of Civil Engineers (ASCE)
dc.subjectConstruction and Demolition (C&D) materials
dc.subjectBase/Subbase course
dc.subjectRecycled concrete aggregate
dc.titleRecycled Concrete Aggregates in Roadways: A Laboratory Examination of Self-Cementing Characteristics
dc.typeJournal Article
dcterms.source.titleJournal of Materials in Civil Engineering
curtin.departmentDepartment of Civil Engineering
curtin.accessStatusOpen access

Files in this item


This item appears in the following Collection(s)

Show simple item record