Abstract
In order to study the mechanical properties of tire slices reinforced crushed concrete particles, a series of shear tests were carried out under the conditions of different vertical loads, different tire volume contents, and different shear rates. The test results show that the addition of tire slices can increase the internal friction angle and cohesion of concrete particles, therefore increase the shear strength of crushed concrete particles. The peak shear stress increases with the increase of vertical load. However, with the increase of the tire volume content, the reinforcement effect of the tire slices first increases and then decreases, and the effect is best when the tire volume content is 4%. Under the vertical load of 60 kPa, the reinforcement effect of 4% tire volume content is the best, and the peak shear stress increases by 46.53%. Additionally, the shear rate has a little effect on the peak shear stress. The larger the shear rate is, the smaller the shear displacement is and the faster the shear strength decreases. The smaller the shear rate is, the more gently the shear strength decreases.
Highlights
With the rapid increase in the number of automobiles, how to deal with a large number of waste tires and further meet the needs of energy conservation and environmental protection have become an unavoidable problem; waste tires were in urgent need of treatment. e reuse of waste tires can be divided into several ways, such as retreading old tires, producing rubber powder from waste tires, and making recycled rubber [1,2,3]
Tire slices with different volume contents were mixed with concrete particles. e moisture content of the sample of the tire slice reinforced concrete particles was controlled to be 5%, and the sample was loaded after the moisture content stabilized. e mixture samples were filled within 5 layers, each of which had a thickness of 4 cm, and a compaction of 25 times was conducted in each layer. e dry density of the sample was 1.77 g·cm−3, and the relative compactness was 60.3%
Is phenomenon was the same as the research carried out Vertical loading device
Summary
With the rapid increase in the number of automobiles, how to deal with a large number of waste tires and further meet the needs of energy conservation and environmental protection have become an unavoidable problem; waste tires were in urgent need of treatment. e reuse of waste tires can be divided into several ways, such as retreading old tires, producing rubber powder from waste tires, and making recycled rubber [1,2,3]. Many scholars have confirmed the feasibility of waste tires as reinforcing materials [4,5,6,7]. In order to further explore the feasibility of tire reinforcement, a series of laboratory tests were carried out, and the results confirmed that the waste tire can be used as the reinforcement material of soil and can be effectively applied to geotechnical engineering [9,10,11]. After a lot of tests, it is found that the mechanical properties of the tire were not the same when it is mixed with different materials. Vieira et al [26] studied the use of fine construction waste as the filling material of the reinforced structure and evaluated the physical, mechanical, and environmental characteristics of construction waste filling. E results can present an important reference for the application of unconventional material waste tire reinforced concrete particles
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