Somna, Rattapon, Apiruk Martnok, and Suksun Horpibulsuk. 2016. “Properties of Concretes With Natural and Recycled Coarse Aggregates: Doi: 10.14456/Mijet.2016.11”. Engineering Access 2 (2). Mahasakham, Thailand:20-24. https://ph02.tci-thaijo.org/index.php/mijet/article/view/10.14456.mijet.2016.11.