摘   要：通过研究高钛矿渣堆积空隙率、细钛矿渣用量对高钛矿渣空心砌块基体材料的抗压强度、干密度的影响，结合前期实验结果进行配合比的优化调整，在此基础上，进行了混凝土空心砌块的实际生产。结果表明，筛分后的高钛矿渣质量比为m(>1.16 mm)∶m(<1.16 mm)=6∶4时，其空隙率最低为20.2%，此搭配下水泥用量最低，除去用水量，最佳水泥用量为18%左右，与前期实验结果一致；随细钛矿渣用量增加，基体材料抗压强度先增加后降低，干密度变化不大；在相同水泥用量的条件下，细钛矿渣的掺入量越多，其抗压强度越高；优化配比后水泥用量可降至10%，其配比为m(高钛矿渣)∶m(水泥)∶m(脱硫石膏)∶m(细钛矿渣)=75∶10∶5∶10，可制备出抗压强度为5.7 MPa，干密度为1 086 kg/m3，MU5.0的低碳轻骨料空心砌块。

Abstract: The effects of high-titanium slag bulk porosity and fine titanium slag dosage on the compressive strength and dry density of high-titanium slag hollow block matrix materials were studied, and the blending ratio was optimized and adjusted based on the previous experimental results. The actual production of concrete hollow blocks is canried ast. The results show that the mass ratio of high titanium slag after sieving is m(>1.16 mm)∶m(<1.16 mm)=6∶4, the lowest void ratio is 20.2%. The optimum cement dosage is about 18%, which is consistent with the previous experimental results; as the amount of fine titanium slag increases, the compressive strength of the matrix material increases and then decreases, and the dry density does not change much; under the same cement dosage, the higher the amount of the fine titanium slag, the higher the compressive strength; the optimum amount of cement can be reduced to 10%, and the ratio is m(high titanium slag)∶m(cement)∶m(desulfurized gypsum)∶m(fine titanium slag)=75∶10∶5∶10, a low carbon light aggregate hollow block with a compressive strength of 5.7 MPa, a dry density of 1 086 kg/m3, and MU5.0 can be prepared.