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NLM160814065 |
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DE-627 |
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20231223090853.0 |
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231223s2006 xx ||||| 00| ||eng c |
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|a pubmed24n0536.xml
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|a (DE-627)NLM160814065
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|a (NLM)16488593
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Poon, Chi-Sun
|e verfasserin
|4 aut
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| 245 |
1 |
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|a The cause and influence of self-cementing properties of fine recycled concrete aggregates on the properties of unbound sub-base
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|c 2006
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|a Text
|b txt
|2 rdacontent
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| 337 |
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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| 338 |
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|a Band
|b nc
|2 rdacarrier
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| 500 |
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|a Date Completed 24.01.2007
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|a Date Revised 28.08.2006
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a 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 (<5mm). 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 FRCA obtained from a commercially operated construction and demolition waste recycling plant. Their influence on the overall sub-base materials was determined. The results indicate that the size fractions of <0.15 and 0.3-0.6mm (active fractions) were most likely to be the principal cause of the self-cementing properties of the FRCA. However, the effects on the properties of the overall RCA sub-base materials were minimal if the total quantity of the active fractions was limited to a threshold by weight of the total fine aggregate
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| 650 |
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|a Journal Article
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| 650 |
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|a Research Support, Non-U.S. Gov't
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| 700 |
1 |
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|a Qiao, X C
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chan, Dixon
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Waste management (New York, N.Y.)
|d 1999
|g 26(2006), 10 vom: 07., Seite 1166-72
|w (DE-627)NLM098197061
|x 1879-2456
|7 nnns
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| 773 |
1 |
8 |
|g volume:26
|g year:2006
|g number:10
|g day:07
|g pages:1166-72
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|a GBV_USEFLAG_A
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|a SYSFLAG_A
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|a GBV_NLM
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| 912 |
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|a GBV_ILN_350
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| 951 |
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|a AR
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| 952 |
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|d 26
|j 2006
|e 10
|b 07
|h 1166-72
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