Experimental Test of Mechanical Properties of Mortar with Rubber Tire Crumb of 0% and 30% at Ages of 7, 28, 56 Days Guntur Nugroho1, Seplika Yadi2, Herlina Arifin3, Euis Kania Kurniawati4, Rizqi Aldi Pratama5
1,2,5 Universitas Muhammadiyah Yogyakarta
3 Universitas Muhammadiyah Sorong
4 Universitas Muhammadiyah Sukabumi