نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه مهندسی آب، واحد گرگان، دانشگاه آزاد اسلامی، گرگان، ایران
2 گروه عمران- سازه، واحد گرگان، دانشگاه آزاد اسلامی، گرگان، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Global water scarcity and air pollution by greenhouse gases have amplified the need to use of unconventional water and environmental friendly materials in the concrete industry. Accordingly, the present study was conducted to investigate interaction of water quality, zeolite, cement content and curing age on concrete compressive strength. Regarding to the considerable types of the experimental treatments in this research and with respect to the lack of statistical analysis in previous studies, the concrete compressive strength data of this study were statistically analyzed by ANOVA and LSD tests based on a completely randomized design with factorial experiment with three replications. The results of analysis of variance test showed that the simple effect of the investigated factors, their two-way interactions, except water type*curing age and zeolite*curing age, and the three-way interaction of cement content*water type*zeolite on compressive strength of the concrete specimens were statistically significant. Due to the lack of significant negative effect of treated industrial wastewater and the mixture of equal tap water and treated industrial wastewater on the compressive strength of concrete, it is recommended to use these waters in the construction of plain concrete. However, the three-way interaction of water type with zeolite and cement content showed that the effect of investigated waters on compressive strength of concrete specimens in different percentage of zeolite is depended on cement content. So, the choice of the best application level of zeolite and water type according to the cement content should be selected based on the in- situ mix design test.
کلیدواژهها [English]
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