Abstract
Lightweight concrete manufacture has been aimed as a result of the use of boron waste which is aggregate of pumice, one of our natural resources, and a valuable industrial waste as a substitution material in different proportions (1%, 3%, 5%, 7%, and 9%). As a result of the study, it was aimed to obtain a water-resistant and lighter material which has higher properties than lightweight concrete in terms of physical and mechanical. The study was carried out as three stages. At the first stage, 90% of the pumice aggregate and 10% of the sand (Reference sample) were used and lightweight concrete was produced. At the second stage, boron waste at the rate of 1%, 3%, 5%, 7%, and 9% was used for pumice aggregate and the doped lightweight concrete sample was produced. At the last stage, tests were carried out for the determination of the physical and mechanical properties of lightweight concrete samples which were produced. For determination of mechanical properties, tensile splitting strength and compressive strength tests were performed. Additionally, specific gravity, water saturated unit volume weight, porosity, and capillary water absorption tests were made for the determination of physical diversities. It was found that the physical and mechanical properties of the material improved with the increase of boron waste in the consequence of this study. The best result was obtained with the boron waste substitution at the rate of 9%. Environmentally harmful boron wastes being used in the construction sector will contribute to sustainability by recycling the boron wastes.
Highlights
The humankind needs various structures for sheltering and the most crucial element of these structures is the material
Physical test results of reference samples and boron waste doped lightweight concrete samples were presented in headings
It is seen that the specific gravity of the boron waste doped lightweight concrete sample with 1% is 1.57 g/cm3, the water saturated unit volume weight is 1.27 g/cm3, the capillary water absorption amount is 114 g and the porosity is 21.4%
Summary
The humankind needs various structures for sheltering and the most crucial element of these structures is the material. The most used bearing construction element in construction sector is concrete [2]. It is commonly used, concrete which has high heat and sound conductivity and excess unit weight causes physical and mechanical problems in structures [3]. The production of new concrete types was developed in order to improve negative sides of concrete actively used in the construction industry and produce more economical and functional concretes [5]. During this development process, different aggregate and additives have been used, mixture ratios have been changed. Construction practice has been changed by using only normal aggregate and cement or it was resorted to producing special concretes by using a few of these methods together [6]
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