Evaluation of fresh and hardened properties of self-compacting concrete containing different percentages of waste tiles

被引：0
作者：
Mousavinejad S.H.G. [1 ]
Saradar A. [1 ]
Jabbari M. [1 ]
Moein M.M. [2 ]
机构：
[1] Department of Civil Engineering, University of Guilan, Rasht
[2] Department of Civil Engineering, Allameh Mohaddes Nouri University, Nour, Mazandaran
来源：
Journal of Building Pathology and Rehabilitation | 2023年 / 8卷 / 2期
关键词：
Construction and demolition; Impact resistance; Recycled concrete aggregates; Self-compacting concrete; Waste tile; Weibull;
D O I：
10.1007/s41024-023-00329-8
中图分类号：
学科分类号：
摘要：
The increasing growth of construction around the world is directly related to the consumption of natural resources and the increase in pollution of the planet. In the field of concrete technology, many countries considered the use of recycled aggregates (resulting from the destruction of structures and infrastructures) in order to move towards sustainable development and help the environment. Tiles are used in many houses all over the world, so the amount of debris produced from it is also considerable. Therefore, the present study examines self-compacting concrete containing different percentages of waste tiles (0%, 25%, 50%, 75% and 100%). The tests were carried out in two groups (including tests on fresh concrete and hardened concrete) on concrete mixtures. Fresh concrete tests include slump flow, T50, J-Ring, V-funnel, and L-Box tests. Also, for hardened concrete tests, compressive strength, tensile strength, and impact resistance were considered. Cubic samples (100 × 100 × 100 mm) were used to test the compressive strength and cylindrical samples (150 × 300 mm) were used to test the tensile and impact resistance. The results showed that replacing 25%, 50%, 75%, and 100% of tiles in self-compacting concrete reduces the 28-day compressive strength by 7%, 12%, 14.2%, and 20%, respectively. Also, replacing 25%, 50%, 75%, and 100% of tiles in self-compacting concrete decreased the 28-day tensile strength by 3.8%, 7%, 17.6%, and 28.3%, respectively. The first crack strength and failure strength for the mixture without tiles (control mixture) were 75 and 81 blows, respectively. Adding 100% of tiles waste to self-compacting concrete decreased the resistance of the first crack by 34.6% and decreased the failure strength by 30.9%. In this study, Weibull analysis was used to analyze the sparse data obtained from the drop-weight test. Investigations showed that the impact data (first crack strength and failure strength) follow the two-parameter Weibull distribution and the resulting R 2 value for different mixtures was higher than 0.87. As a general conclusion, we can infer the optimal performance of waste tile replacement up to 75% according to EFNARC standard parameters. Graphical abstract: [Figure not available: see fulltext.] © 2023, The Author(s), under exclusive licence to Springer Nature Switzerland AG.
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