The cause and influence of self-cementing properties of fine recycled concrete aggregates on the properties of unbound sub-base

The use of coarse recycled concrete aggregates (CRCA) in conjunction with fine recycled concrete aggregates (FRCA) as sub-base materials has been widely studied. Although research results indicate that it is feasible to employ both CRCA and FRCA as granular sub-base, the influence of the unhydrated...

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Veröffentlicht in:	Waste management (Elmsford) 2006-01, Vol.26 (10), p.1166-1172
Hauptverfasser:	Poon, Chi-Sun, Qiao, X.C., Chan, Dixon
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences CEMENTING CEMENTS COMPRESSION STRENGTH CONCRETES Construction Materials - analysis DEMOLITION Exact sciences and technology Hong Kong Hydrogen-Ion Concentration MATERIALS SCIENCE Materials Testing MORTARS Other wastes and particular components of wastes Particle Size PERMEABILITY PH VALUE Pollution RECYCLING Refuse Disposal - methods Wastes X-RAY DIFFRACTION
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Beschreibung
Zusammenfassung:	The use of coarse recycled concrete aggregates (CRCA) in conjunction with fine recycled concrete aggregates (FRCA) as sub-base materials has been widely studied. Although research results indicate that it is feasible to employ both CRCA and FRCA as granular sub-base, the influence of the unhydrated cement in the adhered mortar of the RCA on the properties of the sub-base materials has not been thoroughly studied. Generally, it is known that the strength of the sub-base materials prepared with RCA increases over time. However, this mechanism, known as the self-cementing properties, is not well understood and is believed to be governed by the properties of the fine portion of the RCA (
ISSN:	0956-053X 1879-2456
DOI:	10.1016/j.wasman.2005.12.013