نوع مقاله : مقاله پژوهشی
1 اداره کل راهداری وحمل ونقل جاده ای استان مرکزی، اراک، ایران
2 دانشیار گروه عمران، واحد اهواز، دانشگاه آزاد اسلامی، اهواز، ایران
3 دانشجو دکترا مهندسی عمران گرایش مدیریت ساخت دانشگاه آزاد اسلامی واحد قشم، قشم، ایران
عنوان مقاله [English]
The present study investigates the effect of using natural zeolite (NZ) and nano-silica (NS) on mechanical properties and durability of self-compacting concrete (SCC) in two drinking and sewage water environments. The durability of concrete, especially in corrosive hot areas, such as the southern coast of the country, is one of the major issues facing researchers. 16 mixing designs were made using drinking water and sewage and specimens were cured in both environments. Compressive strength at different ages, penetrability, water absorption and electrical resistance performed at 28 and 90 days ages. The results showed that 56-day strength of specimens containing 0.5%, 1.0% and 1.5% of NS, cured in sewage, had more strength than those cured in drinking water; in sum, NZ and NS improve strength of cured specimens in high alkalinity wastewater. In addition, the permeability at 28 days age for specimens containing 1.5% NS in and cured with drinking water, was at least as 4 mm and also for the specimens containing 1% NS and cured in the sewage, was minimum as 4.5 mm. In addition, water absorption of specimens containing 1% NS in both drinking water and sewage was the lowest; also, specimens containing different percentages of NZ showed higher electrical resistance than reference specimens cured in drinking water.