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INVESTIGATION OF DRYING SHRINKAGE AND COMPRESSIVE STRENGTH OF CEMENT MORTAR WITH PARTIAL REPLACEMENT OF CEMENT BY EGG SHELL POWDER AND MILLED GLASS | ||
| Al-Qadisiyah Journal for Engineering Sciences | ||
| Article 1, Volume 9, Issue 3, 2016, Pages 316-330 PDF (0 K) | ||
| Author | ||
| Zainab Hasan Abdulabbas | ||
| Abstract | ||
| ABSTRACT One of environmental pollution and global warming sources is cement industrials. In line to diminish the effects of cement industrial activities on environment, wastes are used in cement mortar as a partial replacement of cement weight throughout the present study. These wastes comprise poultry egg shell which is wealthy in calcium and glass of bottles of juices and soft drink which has high content of silica. Both types of wastes were grinded carefully and passed sieve No. 200 ( 75μm opening size) to produce egg shell powder (ESP) and milled glass (MG). Cement was substituted by (5%, 7.5%, and 10% ESP), and (10% MG). These ratios of replacement was evaluated individually and in groups by compressive strength test at age of 28 days and drying shrinkage test at ages of 4, 11, 18, 25, and 60 days of drying. Results of tests indicated that compressive strength and drying shrinkage have the same trend when the replacement ratios of ESP used individually in mortar mixes. The higher results were recorded with ratios of 5% and 7.5%. While, compressive strength increased when 10% of MG was used as a partial replacement of cement, and drying shrinkage decreased at ages 11, 18, and 25 days of drying. The combination of MG and ESP in one mix, decrease compressive strength in all percent of addition. However the gathering of MG to 5% of ESP, and MG to 7.5% of ESP decrease drying shrinkage at all age of testing when compared it with the reference mix. | ||
| Keywords | ||
| KEYWORDS; milled glass; cement mortar; compressive strength; and drying shrinkage | ||
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