The development of hybrid fiber reinforced cement composite that has high strength, scope to be used as cement-based sensors has been investigated in this study by using a combination of carbon fibers and carbon nanotubes (CNT) at low volume fraction. The dispersion of CNTs was enhanced by using polycarboxylate based superplasticizer that resulted in a homogeneous aqueous stable solution, and profoundly improved dispersion when integrated with the cementitious matrix. Different siliceous additives were also incorporated into the mixes to improve the dispersion of CNTs in the matrix, where micro-silica outperformed as compared to nano-silica, confirmed morphologically. On the other hand, nano-silica enhanced dispersion of milled carbon fibers in the aqueous state. The sensing behavior was determined by the measurement of bulk resistance of mixes and the samples were subjected to compressive loading to study the strength improvement with the incorporation of fibers. The experimental results reveal that hybrid combination of chopped carbon fibers, micro silica, and low volume fraction of CNTs in a cementitious matrix results in a stronger and durable concrete that holds the potential for sensing applications. Thus, laying a strong foundation for the future of low cost smart cement based materials.

通过使用低体积分数的碳纤维和碳纳米管（CNT）的组合，研究了具有高强度，适用于水泥基传感器的混合纤维增强水泥复合材料的开发。通过使用基于聚羧酸盐的高效减水剂可增强CNT的分散性，从而获得均匀的水性稳定溶液，并在与水泥基体结合时显着改善分散性。混合物中还掺入了不同的硅质添加剂，以改善碳纳米管在基体中的分散性，在形态上已证实微硅的性能优于纳米硅。另一方面，纳米二氧化硅增强了研磨碳纤维在水性状态下的分散性。通过测量混合物的体电阻来确定传感行为，并对样品施加压缩载荷以研究掺入纤维后强度的提高。实验结果表明，短切碳纤维，微硅石和低体积分数的CNT在水泥基中的混合组合可产生更坚固耐用的混凝土，具有传感应用的潜力。因此，为低成本智能水泥基材料的未来奠定了坚实的基础。碳纳米管在水泥基体中的体积分数低，可形成更坚固耐用的混凝土，具有传感应用的潜力。因此，为低成本智能水泥基材料的未来奠定了坚实的基础。碳纳米管在胶凝基体中的体积分数低，可形成更坚固耐用的混凝土，为传感应用提供了潜力。因此，为低成本智能水泥基材料的未来奠定了坚实的基础。