Laboratory study to investigate the mechanical behavior and characteristics of reinforced concrete with recycled fibers in the glass industry

In the present study, the effect of recycled glass fibers on the behavior and mechanical properties of concrete was investigated. The research was conducted by laboratory study method. Various cubic and cylindrical samples were made in the laboratory. In all mixing designs, the water to cement ratio was 0.35 and the sand to cement ratio was 1. First, a reference sample without fibers and additives was prepared and subjected to various tests. Examination of the samples after the experiment showed that failure occurred in the samples without recycled fibers and brittle glass waste; But failure in samples reinforced with recycled fibers and glass waste is gradual. Under these conditions, in samples made by spray method, the modulus of rupture and displacement of samples to the moment of failure, had much higher values ​​than samples made in the pre-mixed method. As the age of the samples increased from 7 days to 90 days, the modulus of specific rupture of the cement decreased; However, there is no definite trend in changes in the specific rupture modulus of the pozzolanic effect over time. According to the results, it can be seen that over time from 7 to 28 days, the specific compressive strength of cement and also the specific compressive strength of the pozzolanic effect has increased. Over time from 7 to 28 days, the specific compressive strength of cement as well as the specific compressive strength of the pozzolanic effect has increased.