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Evaluation of using the crushed concrete aggregate as unbound pavement layer
Author
Source
Journal of University of Babylon for Engineering Sciences
Issue
Vol. 25, Issue 4 (31 Aug. 2017), pp.1478-1484, 7 p.
Publisher
Publication Date
2017-08-31
Country of Publication
Iraq
No. of Pages
7
Main Subjects
Abstract EN
Population increase and economic developments can lead to construction as well as demolition of infrastructures such as buildings, bridges, roads, etc and the used concrete is the main waste product of them.
Recycling of waste concrete to obtain the recycled concrete aggregates (RCA) for base and/or sub-base materials in road construction is a foremost application to be promoted to gain economical and sustainable benefits.
Recycled Concrete Aggregate was taken from the tested samples of concrete cubes in the consultant bureau.
The samples belong to the same group in order to ensure that they have the same composition.
This aggregate was used to produce three groups of samples: graded as subbase (type B) and base course according to Iraqi specifications for roads and bridges.
Two groups graded as subbase but with difference in amount of materials passing sieve size 0.075 mm (0%, 5%).
The other sample was graded as base course with (5%) the lowest limit of materials passing sieve size (0.075) mm.
The experimental tests adopted are: Atterberg limits, Moisture-density relationship, and California Bearing Ratio.
CBR test’s results obtained from the Recycled Concrete Aggregate are still showing the highest values as compared with the ordinary local subbase materials, they show an increment by 28% when the RCA without filler and 80% when the RCA with 5% filler, the values are also high for base course exceeds the requirements by 60% increment.
In light of the Iraqi specifications for roads and bridges they can be used as base and/or subbase course layer.
To increase the CBR value the RCA needs the lowest amount of materials that pass the sieve size (0.075) mm
American Psychological Association (APA)
Mahdi, Zayd Abd al-Zahrah. 2017. Evaluation of using the crushed concrete aggregate as unbound pavement layer. Journal of University of Babylon for Engineering Sciences،Vol. 25, no. 4, pp.1478-1484.
https://search.emarefa.net/detail/BIM-923478
Modern Language Association (MLA)
Mahdi, Zayd Abd al-Zahrah. Evaluation of using the crushed concrete aggregate as unbound pavement layer. Journal of University of Babylon for Engineering Sciences Vol. 25, no. 4 (2017), pp.1478-1484.
https://search.emarefa.net/detail/BIM-923478
American Medical Association (AMA)
Mahdi, Zayd Abd al-Zahrah. Evaluation of using the crushed concrete aggregate as unbound pavement layer. Journal of University of Babylon for Engineering Sciences. 2017. Vol. 25, no. 4, pp.1478-1484.
https://search.emarefa.net/detail/BIM-923478
Data Type
Journal Articles
Language
English
Notes
Text in English ; abstracts in English and Arabic.
Record ID
BIM-923478