Some properties of no-fines concrete produced by using demolished concrete as recycled coarse aggregate
Joint Authors
Salih, Sh. A.
Abd, W. F.
al-Nawfali, Iqbal Naim Kurkis Numan
Source
Engineering and Technology Journal
Issue
Vol. 35, Issue 7A (31 Jul. 2017), pp.741-748, 8 p.
Publisher
Publication Date
2017-07-31
Country of Publication
Iraq
No. of Pages
8
Main Subjects
Engineering & Technology Sciences (Multidisciplinary)
Abstract EN
This paper investigate some mechanical properties of no-fines concrete produced by using demolished concrete as coarse aggregate after crushing to different sizes.
Different no-fine mixes were considered using Portland cement type I with two types of coarse aggregates, crushed natural gravel and crushed demolished concrete were used with two ratios by weight (1:5 and 1:7) cement/aggregate.
Single size and graded aggregate were used with a maximum size of 20 mm.
W /C ratio was kept as 0.4 for all mixes and supper plasticizer was used to keep the same flow and compaction factor value for all mixes .
Using demolished concrete as coarse aggregate in no fine concrete led to decrease in the workability.
As a comparison with natural coarse aggregate mixes, the average percentages of decreases for the flow, compaction factor and the fresh density were 2%, 2.3% and 6.4%, respectively.
As well as the test results indicated that the compressive strength, splitting tensile strength, flexural strength and oven dry density for no fine made with crushed demolished concrete at age 28 days were decreased by about 29%, 22 %, 21% and 4% respectively as compared with no fine made by natural crushed aggregate.
American Psychological Association (APA)
Salih, Sh. A.& al-Nawfali, Iqbal Naim Kurkis Numan& Abd, W. F.. 2017. Some properties of no-fines concrete produced by using demolished concrete as recycled coarse aggregate. Engineering and Technology Journal،Vol. 35, no. 7A, pp.741-748.
https://search.emarefa.net/detail/BIM-796514
Modern Language Association (MLA)
Salih, Sh. A.…[et al.]. Some properties of no-fines concrete produced by using demolished concrete as recycled coarse aggregate. Engineering and Technology Journal Vol. 35, no. 7A (2017), pp.741-748.
https://search.emarefa.net/detail/BIM-796514
American Medical Association (AMA)
Salih, Sh. A.& al-Nawfali, Iqbal Naim Kurkis Numan& Abd, W. F.. Some properties of no-fines concrete produced by using demolished concrete as recycled coarse aggregate. Engineering and Technology Journal. 2017. Vol. 35, no. 7A, pp.741-748.
https://search.emarefa.net/detail/BIM-796514
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 747-748
Record ID
BIM-796514