Investigating the Effect of natural Pozzolans on Mechanical Properties of Roller Compacted Concrete

Journal of Structural Engineering and Geo-Techniques

مقاله 6، دوره 10، شماره 1، شهریور 2020، صفحه 45-54   

نویسندگان

Mohammad Falahnejad¹؛ Mahdi Mahdikhani^{* 2}

¹Master's degree in Structural Engineering at Islamic Azad University, Qazvin Branch, Iran

²Faculty of Civil Engineering, Imam Khomeini International University, Qazvin, Iran.

چکیده

Roller Compacted Concrete (RCC), is a concrete with zero slump, which is used in damming and road pavement. Roller Compacted Concrete Pavement (RCCP) bear heavy traffic loads and severe weather conditions. This type of concrete is due to its economic and environmental capabilities, including reduced construction and maintenance costs, longer durability and longer lifetime, as well as environmental compatibility. This paper presents the results of laboratory studies on the effect of natural pozzolan (zeolite) on the mechanical properties of RCC specimens. In this study, cement materials of were used The rheological performance test (VeBe) and compressive and tensile strengths at the age of 7, 14 and 28 days and the flexural strength tests at 14 and 28 days were performed on the specimens. The results show that the higher amount of pozzolan reduced concrete efficiency (the time of VeBe increased). In addition, the compressive, tensile and flexural strength of the samples are decreased, significantly. However, reducing resistance does not mean compliance with the requirements of the Code.

کلیدواژه‌ها

Roller Compacted concrete؛ Zero Slump؛ Road pavement؛ mechanical properties؛ VeBe test

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