Effect of portland composite cement and buton granular asphalt on indirect tensile strength of emulsified asphalt cold mix using limestone aggregate

Abstract

The research is laboratory experimental purposing to analyze effects of Portland Composite Cement (PCC) and Buton Granular Asphalt (BGA) on Indirect Tensile Strength (ITS) of Emulsified Asphalt Cold Mix (EACM) using limestone aggregate. The EACM is designed as Asphalt Concrete-Wearing Course (AC-WC). The material of EACM contains emulsified asphalt CSS-1h, BGA 50/30, PCC, and Limestone Aggregate. The specimen consisted of Bitumen 8% of total weight, BGA 8% of total weight, and PCC 0%, 1.5%, and 2% of total weight. The specimen is classified into 5 groups, namely P0B0, P0B8, P1.5B8, P2B0, and P2B8. PCC is used as partial substitutions of limestones filler. BGA is used as partial substitutions of bitumen emulsion and partially substitutions of filler or and fine aggregate. The specimens of EACM having 101 mm in diameter and 63.5 mm in height ware tested by UTM apparatus with Horizontal Linear Variable Displacement Transducer (LVDT) 10 mm and vertical LVDT 25 mm according to ASTM D 6931 – 12. The result of this study concludes that the use of PCC and BGA increased ITS of EACM. Both P1.5B8 and P2B8 Specimens met maximal performance, where Indirect Tensile Strength of them 2.8 times ITS of P0B0.