Improvement of Concrete Paving Blocks Properties by Mineral Additions | ||
| Journal of University of Babylon | ||
| Article 1, Volume 25, Issue 1, February 2017, Pages 157-164 | ||
| Author | ||
| Aqeel Hatem Chkheiwer | ||
| Abstract | ||
| This research presents the results of experimental work on the various properties concrete paving blocks (CPB) made with concrete containing different mineral additions.in this study, three types of mineral additions;Fly Ash (FA),Metakaolin (MK) and Silica Fume (SF) were used. Thirteen concretes mixes were cast at a water/binder ratio of 0.45 with 0, 5, 10,15and 20% cement replaced by either Fly ash,Metakaolin or Silica Fume. Theconcrete mixes were tested for slump, compressive strength, water absorption, and abrasion resistance.Metakaolin-contained concrete showed a better workability than fly ash and silica fume concrete. As the replacement level wasincreased, the 28-days compressive strength of the CPB containing MK increased similarly to that of the silica fume-containedCPB up to 20% replacement ratio. The replacement ratio of MK and SF from 5 to 20 % reduced water absorptionof CPB from5 to 19 than that of control mix. The increase in replacement ratio of MK andSF from 5 to 20 % leads to increasing abrasion resistance from 8 to 18% that of control mix. | ||
| Keywords | ||
| Concrete Paving Blocks; MineralAdditions; Silica fume; Fly Ash; Metakaolin | ||
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