Kongkeaw K, Khemkhao M, Suwansaard A. Mechanical Properties of Sound-Absorbing Walls from High-Density Polyethylene Plastic Waste. RJST [internet]. 2026 Apr. 30 [cited 2026 Sep. 11];8(1):26-41. available from: https://ph02.tci-thaijo.org/index.php/RJST/article/view/259544