With the addition of conductive fibers cement can be modified to become a piezoresistive material so that it is highly sensitive to the type of additive, curing and the changes in the stress and can be monitored via changes in the electrical resistivity. In this study, the effect of two conventional admixtures, a superplasticizer (acetone-formaldehyde-sulfite (AFS)) and a retarder (sodium lignosulfonate (Na-LS)), on the piezoresistive properties of the cement were investigated. It was found that both polymers which present conductive polyelectrolytes decreased the resistivity of the cement, but captured all the critical parameters during curing and also the cement was piezoresistive and the strength was enhanced with 0.3% AFS and 0.4% Na-LS addition after 2 and 28 days of curing. The non-destructive method can be used for real-time sensing of cement and concrete properties in the field.

通过添加导电纤维，可以将水泥改性为压阻材料，从而使其对添加剂的类型，固化和应力变化高度敏感，并可以通过电阻率的变化进行监控。在这项研究中，研究了两种传统掺合料，高效减水剂（丙酮-甲醛-亚硫酸盐（AFS））和缓凝剂（木质素磺酸钠（Na-LS））对水泥的压阻性能的影响。结果发现，两种具有导电性聚电解质的聚合物均降低了水泥的电阻率，但在固化过程中捕获了所有关键参数，并且水泥具有压阻性，并且在添加2和3后，添加0.3％的AFS和0.4％的Na-LS可以提高强度。固化28天。