Investigate and Comparison Effect add Amorphous and Crystalline - Nano SiO2 on Properties of Concrete | ||
| Engineering and Technology Journal | ||
| Article 1, Volume 33, 3B, March 2015, Pages 547-555 PDF (370.98 K) | ||
| DOI: 10.30684/etj.33.3B.14 | ||
| Author | ||
| Rami Joseph Aghajan Sldozian | ||
| Abstract | ||
| In this paper, the study included the comparison between amorphous silica and crystalline silica (quartz), and with nano scale size, two types of silicawere added to concrete by ratios (5%, 10%, 15%, and 20%) as a replacement by the weight of cement. Destructive and non-destructive tests wereconducted on the specimens, the results show in destructive test the compressive and tensile strength increase in 15%wt addition ratio in both types of silica, but in amorphous silica was high than in quartz.The results of non-destructive tests show in (Schmidt Hammer) the 15% ratio in both kinds of silica show high hardness than other ratios. Ultra sonic (pules velocity) test, noted the better quality was in 15% ratio in amorphous silica and also show fastest pules velocity. | ||
| Keywords | ||
| Concrete; Cement; Nano; SiO; Ultrasonic; Schmidt Hammer; Tensile Strength; Compressive Strength | ||
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