Selection of Optimum Ternary Binder Systems that Enhance the Workability and Durability of Concrete used in Marine Railways

Abstract

In this study, the improvement of the compressive strength and duradbility of concrete used in marine railways by adding binding agents was investigated. The test speciments used in the study comprised developed product A (DP_A), developed product B (DP_B), Ordinary Portland Cement (OPC), admixture A, and admixture B, in the study, the optimum ternary binder systems of the test specimens were identified. An optimum ternary binder system would facilitate the simultaneous enhancement of the durability and workability of concrete used on undersea tunnel linings and bridge structures. The compressive strength of each specimen tested after 16h could easily meet the specified standard target strength (> 3.0_MPa). Moreover, the 7d long term strength of each test specimen exceeded 3.0 MPa. When binders were used, the chloride penetration resistance (DP_A was exceptional)_2.741C (normal) and, 1.490C (low) following-28 and 91days. The surface diffustion coefficient of (DP_B) at 91days 9.12 (× 10-12, m<sup>2</sup>/sec) was higher than that of OPC 9.55 (× 10-12, m<sup>2</sup>/sec). However, the surface diffusion coefficient of (DP_A) was 4.15 (× 10-12, m<sup>2</sup>/sec) which was lower than OPC by approximately 57%, indicating the outstanding durability of DP_A.