Experimentally investigating the usability of waste interlocking concrete paver in the plant-mix base layer

Abstract

Due to the growth in the construction industry in recent years, the need for natural aggregates has increased. Due to this increase in need, the search for alternative materials to natural aggregate has begun. Construction and demolition wastes generated as a result of construction and demolition activities are among these materials. Construction and demolition wastes generally consist of materials such as concrete, brick, steel and asphalt. The recycling and reuse of these wastes is of great importance in terms of reducing the consumption of natural aggregates. Within the scope of this study, the usability of waste interlocking concrete paver (ICP) obtained from the storage facility in the plant-mix base layer instead of natural aggregate (NA) was examined. In this study, the gradation was determined according to the plant-mix base layer type 1 specified in the Turkey Highway Technical Specification 2013 (THTS 2013), and the base design was made to remain within these gradation limits. For the designed plant-mix base layer; in order to determine the physical and mechanical properties of the DA and APT samples to be used alone and the mixture samples obtained by mixing these materials in certain proportions, the tests specified in the THTS 2013 were carried out. The obtained results have been compared with the limit values in the THTS 2013 and the test results obtained from natural aggregate samples. When the experimental results were examined, it was determined that the water absorption and abrasion values of the ICP material were higher than the NA material and it did not meet the specification limit. However, in the other test results, the ICP material met the specification limits.