Abstract
This study deals with assessing some undesirable industrial wastes on production of new polyester composites from polyester with demolition red bricks and crumb rubber (PE-DRB-CR). The performance of the prepared composites is evaluated by different tests, namely: compressive, flexural strength, hardness, abrasion as well as bulk density. The results of mechanical tests showed that modifying of crumb rubber by Kraft black liquor (MCR-KBL) as well as NaOH (MCR-NaOH) enhances the incorporating of rubber waste in formulation of PE-composites. Incorporating 5% MCR-KBL leads to improving the application of DRB and CR waste in resulting the most convenient PE-DRB-CR composite complying with economic and environmental purposes. Treatment of CR has increased the abrasion resistance by reducing the volume loss from 62 mm3 to 55 mm3. Moreover, the compressive strength of treated samples (56 MPa) was superior to both untreated (33.67 MPa) and rubber free ones (48.98 MPa). Regarding the flexural strength and hardness, the results were close to those of rubber free samples (34 MPa and 122 DN).
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