以攀枝花钢铁公司生产的高钛型高炉渣的碳化产物(碳化渣)取代标准砂为集料制备了水泥砂浆。采用X射线衍射仪(XRD)和扫描电子显微镜(SEM)对高钛型碳化渣进行了成分、物相和形貌表征；测试了不同碳化渣含量下水泥砂浆的抗压强度和电阻率，探讨了不同碳化渣取代量对水泥砂浆电阻率的影响机制。研究结果表明，含有碳化渣的水泥砂浆的强度满足建筑水泥砂浆的要求；在潮湿状态下，碳化渣的引入无法降低28 d龄期水泥砂浆的电阻率；在干燥状态下，当碳化渣的取代量达到60%以上时，水泥砂浆的电阻率可低于标准水泥砂浆，且最低可下降87.5%。高钛型碳化渣可作为导电集料的候选材料用于制备面向建筑加热采暖用的水泥基复合导电材料。

As a solid waste, titanium-bearing blast furnace slag is discarded in the slag field, which brings the double pressure of waste of titanium resources and environmental pollution to the society. It is of great significance to explore new technology and realize the comprehensive utilization of large amount of titanium-bearing blast furnace slag with full component and high added value. In this work, cement mortar was prepared by replacing standard sand with carbonized high titanium-bearing blast furnace slag (carbonized slag) from Panzhihua steel group as aggregates. The chemical composition, crystallized phase and particle morphology of carbonized slag were characterized by X-ray fluorescence spectrometer (XRF), X-ray diffractometer (XRD) and scanning electron microscope (SEM). The compressive strength and electrical resistivity of cement mortar with different carbonized slag content were tested, and the influence mechanism of carbonized slag on the electrical resistivity was discussed. The results indicated that the compressive strength of cement mortar containing carbonized slag met the requirements of building cement mortar. When the substitution of carbonized slag was 80%, the compressive strength of the obtained cement mortar was 74.7 MPa, which was 26% higher than that of standard cement mortar. With increasing substitution amount of carbonized slag, the electrical resistivity of cement mortar at the age of 3 d and 7 d decreased slowly, while that of cement mortar at the age of 28 d increased first and then decreased. When the cement mortar (28 d age) was wet, the introduction of carbonized slag did not reduce its resistivity. However, when it was dried and the substitution of carbonized slag exceeded 60%, the resistivity was dramatically decreased and lower than that of standard cement mortar. When the stand sand was completely replaced by the carbonized slag, the electrical resistivity of the dried cement mortar was the lowest with a value of 1.7×104 Ω?m, which was 87.5% lower than that of standard cement mortar. Carbonized slag with high titanium content can be used as a candidate material for conductive aggregate to prepare conductive cement-based composites for building heating.