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- W647641486 abstract "The use of coarse recycled concrete aggregate (RCA) in conjunction with fine RCA as sub-base materials has been widely studied. Although research results indicated that it was feasible to employ both coarse and fine RCAs as granular sub-base, the influence of the un-hydrated 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 (< 5 mm). This paper presents an investigation on the cause of the self-cementing properties by measuring x-ray diffraction patterns, pH values, compressive strength and permeability of various size fractions of the fine RCA. Their influence on the overall sub-base materials was determined. The results indicated that the size fractions of < 150 micro-m and 0.3-0.6 mm were most likely to be the principal cause of the self-cementing properties of the fine fractions of RCA. However, its effects on the properties of the overall RCA sub-base materials were minimal. (A)" @default.
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- W647641486 date "2005-01-01" @default.
- W647641486 modified "2023-09-26" @default.
- W647641486 title "Influence of Self-Cementing Properties of Fine Recycled Concrete Aggregates on the Characteristics of Road Sub-base Materials" @default.
- W647641486 hasPublicationYear "2005" @default.
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