TY  - JOUR
T1  - Investigate Some Properties Types of Concrete that Contain Crump
Rubber and Ordinary Concrete
AU - Hamid Al-Ameedi, Samer AU - Mohammad Shaheed, Saba AU - Salim Hussein, Thulfiqar 
JO  - Journal of Engineering and Applied Sciences
VL  - 13
IS  - 21
SP  - 8981
EP  - 8985
PY  - 2018
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2018.8981.8985
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2018.8981.8985
KW  - CR: Crump Rubber
KW  -G: Gravel
KW  -S: Sand
KW  -C: Cement
KW  -R: Refrence mix
KW  -parameters
AB  - In this study a many mixes of concrete was produced by using the materials which are available locally. A full gradient of course aggregate was used. Three main types of mixes were made in addition to reference mix. First mix depended on absence sand from the parameters in the second mix sand was absence and crump rubber presence in the mix by many replacement percents from coarse aggregate. While in the third mix sand and crump rubber was presence. The results of compressive strength in this study showed decrease compressive strength of (C+G)* mix. The percentage of decrease in compressive strength was 30.9% at 28 days from the reference mix. In the second mix the results showed decrease in compressive strength of ((C+G) with 5% CR mix (C+G) with 7% CR mix and (C+G) with 10% CR mix), respectively. The percentage of decrease in compressive strength was (52.7, 50.1 and 57.5%) at 28 days, respectively from the reference mix. In the third mix, the results showed decrease in compressive strength of ((C+S+G) with 5% CRmix (C+S+G) with 7% CR mix and (C+S+G) with 10% CR mix), respectively. The percentage of decrease in compressive strength was (33.5, 42.1 and 54.6%) at 28 days respectively from the reference mix. The results of absorption in this study showed increase in absorption of (C+G) mix .The percentage of increase in absorption was 237.5% at 28 days from the reference mix . In the second mix the results showed increase in absorption of ((C+G) with 5% CR mix (C+G) with 7% CR mix and (C+G) with 10% CR mix), respectively. The percentage increase of Absorption was (183.8, 129.1 and 120.8%) at 28 days, respectively from the reference mix. In the third mix, the results showed increase absorption of ((C+S+G) with 5% CR mix (C+S+G) with 7% CR mix and (C+S+G) with 10% CR mix), respectively. The percentage increase in absorption was (170.8, 145.0 and 150.0%) at 28 days, respectively from the reference mix. The results of permeability in this study showed increase in permeability of (C+G) mix. The percentage of increase in permeability was 450.7% at 28 days from the reference mix. In the second mix the results showed increase in permeability of ((C+G) with 5% CR mix (C+G) with 7% CR mix and (C+G) with 10% CR mix) respectively . The percentage of increase in permeability was (426.7, 395.7 and 304.2%) at 28 days, respectively from the reference mix. In the third mix , the results showed increase in permeability of ((C+S+G) with 5% CR mix (C+S+G) with 7% CR mix and (C+S+G) with 10% CR mix), respectively. The percentage of increase in permeability was (188.8, 138.1 and 115.5%) at 28 days, respectively from the reference mix.
ER  -