A comparative assessment of the physical and microstructural properties of waste garnet generated from automated and manual blasting process

摘要: Abstract Cold mix asphalt (CMA) is an eco-friendly sustainable mixture, mostly for surface treatments (ASTs). However, material compatibility and poor adhesion leading to high voids, moisture damage susceptibility, weak early strength remain challenging. Efforts solve this limitation beamed towards binder improvement modification with modifiers, promoters, or polymers. Other forms of AST mixture entail supplementary cementitious reinforcing pozzolanic agents in the form by-products. In study, physio-mechanical microstructural desirability spent garnet use as fine aggregate CMA was explored. Spent a by-product abrasive blasting, often produced large quantities disposed landfills. Often, waste gets contaminated toxic elements either during usage This study aimed investigate properties Automatically (AG) Manually generated (MG) grades. The physio-mechanical, morphologic, chemical parameters were assessed achieve aim. result compared relevant specifications on cold mixtures plus Jabatan Kerja Raya (JKR) requirement. Moreover, crystallinity composition studied using Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), Fluorescence (XRF). presence heavy metals that contaminate deposits landfills evaluated too. Results suggested both AG MG’s sand equivalent least water absorption 98 %, 89 0.14 0.23 % accordingly, can replace CMA. MG not desirable chemically sensitive materials. found be Pyrope while largely Almandine – strongest garnet, including traces other forms.