Abstract
The reactive powder concretes (RPC) are new concretes with a particle diameter of not more than 600 μm and very high compressive, tensile strengths and an excellent durability. In this experimental investigation we study this new generation of micro-concretes, in obtaining high initial and final mechanical performances using local materials. The Portland cement, materials rich in silica (slag, silica fume and quartz) and new steel fibers’ aspect ratios has been reinforced the concrete RPC. Specimens’ preparation, curing regimes and testing procedures to evaluate the effect of heat treatment, steel fiber percentage compressive strength, flexural strength, deformability and modulus of elasticity of RPCFs were discussed. A compressive strength of 134 MPa, indirect tensile strength of 2.7 MPa, heting temperature of 90 °C, 2.5% steel fiber have been achieved for reinforced RPC contains 945 kg/m3 cement content and silica fume content 30% of cement weight. Also, the relationship between the relative value and the modulus of elasticity developed for a fiber-reinforced reactive concrete is greater than that of the unbound fiber. By eliminating the granular phase in the RPC and the abundance of dune sand (southern Algeria) and granulated slag, the use of RPC in Algeria with local materials meets economic and ecological requirements.
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Chadli, M., Tebbal, N., Mellas, M. (2020). Study of the Mechanical Behavior of a Reactive Powder Concrete Containing Fibers. In: Safi, B., Daoui, A., Mechakra, H., Ghernouti, Y. (eds) Proceedings of the 4th International Symposium on Materials and Sustainable Development. ISMSD 2019. Springer, Cham. https://doi.org/10.1007/978-3-030-43211-9_7
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