Document Type : Original Article
Authors
1
Master's degree in Civil Engineering, Structural Engineering, Department of Civil Engineering, Islamic Azad University, Sepidan Branch, Sepidan, Iran
2
Instructor, Faculty of Civil Engineering, Technical and Vocational University (TVU), Tehran, Iran
3
Assistant Professor, Department of Civil Engineering, Firoozabad Branch, Meymand center, Islamic Azad University, Meymand, Iran
Abstract
Today, all hospitals are equipped with laboratories or radiation therapy departments, and the patient should take advantage of new treatment methods. Also, the construction of atomic and nuclear power plants and laboratories has contributed to the country's progress, and having technology and knowledge is important in the development of the country's infrastructure. Also, the people working in these centers are mainly doctors, nurses, and atomic physics engineers, who are considered geniuses and human capital, and it is necessary to reduce the amount of dangers caused by dangerous rays such as gamma rays and X-rays. Currently, thick and high-density concrete walls or reinforced concrete with one or more layers of lead tape are used to prevent the passage of dangerous rays. Considering that Iran has a lot of ilmenite mines, it is necessary to check how much ilmenite can be added in concrete in order to reduce the price and use domestic materials to save and find jobs and develop domestic mines. Dangerous to be effective. In this research, 10%, 20%, 30% and 40% ilmenite was used instead of sand to make heavy concrete. ACI-304.3R heavy concrete construction standard was determined by volumetric method. To investigate the characteristics of heavy concrete from slump tests, the specific weight of fresh concrete, compressive strength and X-ray and gamma penetration measurements of concrete were investigated. The results of this research showed that adding 20% by volume of ilmenite instead of sand can increase the 90-day compressive strength of concrete by 47%. Also, adding 40% by volume of ilmenite in concrete can weaken the amount of x-ray and gamma rays by 24.77% and 18.16%, respectively.
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