Case Studies in Construction Materials (Dec 2022)
The evaluation of calcium carbonate added and basalt fiber reinforced roller compacted high performance concrete for pavement
Abstract
The purpose of this research was to evaluate the mechanical properties and durability of basalt fiber (BF) reinforced, and ground calcium carbonate incorporated (GCC) roller-compacted concrete (RCC) by considering different amounts of basalt fibers (BFs). Concrete specimens containing various BFs (0.5 %, 0.75 %, 1 % and 1.25 % by weight) and GCC amounts (replacing 5 %, 10 % 15 % and 20 % by weight of cement) were examined. A hybrid optimization study based on the Placket Burmann and Taguchi methods was also conducted to enhance the effects of ingredients in terms of their compressive and flexural strengths. The experimental results showed that compressive and flexural strengths varied in the range of 28.74–44.95 MPa and 3.92–6.13 MPa respectively at the age of 28 days. Moreover, factors consisting of 260 kg/m3 cement, 1.25 % of BF and 20 % GCC were obtained as the optimum condition for the proposed RCC design. The developed BF reinforced and GCC added RCC could be a reasonable alternative material for pavement construction.
