摘   要：通过水洗预处理方式降低了提钛尾渣粉中的Cl-含量，研究了未处理提钛尾渣粉、水洗提钛尾渣粉掺量（0、10%、30%、50%）对净浆凝结时间、水化进程、物相组成及砂浆抗压强度的影响。结果表明：提钛尾渣粉的掺入缩短了水泥净浆的初、终凝时间，随着掺量的增加，掺未处理提钛尾渣粉净浆的终凝时间先减后增，掺水洗提钛尾渣粉净浆的终凝时间基本缩短；提钛尾渣粉的掺入降低了砂浆的28 d抗压强度，随着掺量由10%增至50%，掺未处理提钛尾渣粉砂浆的28 d抗压强度先略增大后降低，掺水洗提钛尾渣粉砂浆的28 d抗压强度降低；当提钛尾渣粉掺量在30%以内时，其对砂浆强度的作用效果与矿粉相近；适量掺入提钛尾渣粉有效促进了胶凝材料体系水化初期的水化进程，降低了水化放热量。Abstract: The content of Cl- in titanium tailing slag powder was reduced through washing pretreatment. The effects of untreated and washed titanium tailing slag powder contents(0%, 10%, 30%, 50%) on setting time, hydration process and phase composition of cement paste, as well as the compressive strength of mortar were investigated. The results indicate that the incorporation of titanium tailing slag powder shortens both the initial and final setting times of the cement paste. With the increase of the content, the final setting time of cement paste with untreated titanium tailing slag powder first decreases and then increases, while that of cement paste with washed titanium tailing slag powder basically shortens. The incorporation of titanium tailing slag powder reduces the 28 d compressive strength of mortar. As the content of titanium tailing slag powder increases from 10% to 50%, the 28 d compressive strength of mortar with untreated titanium tailing slag powder first increases slightly and then decreases, while that of mortar with washed titanium tailing slag powder decreases. When the content of titanium tailing slag powder is within 30%, its effect on the mortar strength is similar to that of slag. An appropriate content of titanium tailing slag powder effectively facilitates the initial-stage hydration process of the cementitious system, and reduces hydration heat release.

张仕安,程玉雷,徐超,等.提钛尾渣粉对水泥基材料性能的影响[J].混凝土与水泥制品,2025(9):114-119. ZHANG S A,CHENG Y L,XU C,et al.Effect of titanium tailing slag powder on the performance of cementitious materials[J].China Concrete and Cement Products,2025(9):114-119.

摘   要：研究了玄武岩纤维（BF）掺量（0、0.15%、0.25%、0.35%、0.45%、0.55%、0.65%）对路用粉煤灰沥青混合料稳定性和低温抗裂性的影响。结果表明：随着BF掺量的增加，粉煤灰沥青混合料的稳定度先升高后降低，流值呈递增趋势，马歇尔模数先增加后减小，抗弯拉强度和弯拉应变均先增加后减小，劲度模量先减小后增大；综合考虑相关规范对稳定性、低温抗裂性的要求，以及实际工程中的误差，得出了BF的最佳掺量范围为0.17%~0.61%。Abstract: The influence of basalt fiber (BF) content (0, 0.15%, 0.25%, 0.35%, 0.45%, 0.55%, 0.65%) on the stability and low-temperature crack resistance of road fly ash asphalt mixture was studied. The results show that with the increase of BF content, the stability of fly ash asphalt mixture first increases and then decreases, the flow value shows an increasing trend, the Marshall modulus first increases and then decreases, the flexural tensile strength and flexural tensile strain both first increase and then decrease, and the stiffness modulus first decreases and then increases. Taking into account the requirements of relevant standards for stability and low-temperature crack resistance, as well as the errors in actual engineering, the optimal content range of BF is determined to be 0.17% to 0.61%.

苏有文,梁建,汪鑫.玄武岩纤维掺量对改性粉煤灰沥青混合料路用性能影响研究[J].混凝土与水泥制品,2025(9):110-113. SU Y W,LIANG J,WANG X.Study on the influence of basalt fiber content on the performance of asphalt mixture modified by fly ash[J].China Concrete and Cement Products,2025(9):110-113.

摘   要：研究了钢纤维体积掺量（0、0.5%、1.0%、1.5%、2.0%、2.5%）对再生骨料混凝土坍落度、抗压强度、劈裂抗拉强度、抗折强度和折压比的影响，结果表明：钢纤维的掺入降低了再生骨料混凝土的坍落度，但基本提高了其28 d抗压强度、劈裂抗拉强度、抗折强度和折压比；随着钢纤维体积掺量的增加，再生骨料混凝土的坍落度降低，28 d抗压强度和抗折强度均先增后降，28 d劈裂抗拉强度增大，28 d折压比先降后增再降；综合考虑再生骨料混凝土的工作性、力学性能和韧性，推荐钢纤维的最佳体积掺量为2.0%。Abstract: The effects of volume content(0%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%) of steel fibers on the slump, compressive strength, splitting tensile strength, flexural strength, and flexural-compressive ratio of recycled aggregate concrete were investigated. The results indicate that the incorporation of steel fibers reduces the slump of recycled aggregate concrete, but generally increases its 28 d compressive strength, splitting tensile strength, flexural strength, and flexural-compressive ratio. With the increase of volume content of steel fibers, the slump of recycled aggregate concrete decreases, while the 28 d compressive strength and flexural strength first increase and then decrease, the 28 d splitting tensile strength increases, and the 28 d flexural-compressive ratio first decreases, then increases, and finally decreases. Considering the workability, mechanical properties, and toughness of recycled aggregate concrete, the recommended optimum volume content of steel fibers is 2.0%.

温永钦,王盈锟,郭浩.钢纤维对再生骨料混凝土工作性、力学性能及韧性的影响研究[J].混凝土与水泥制品,2025(9):106-109. WEN Y Q,WANG Y K,GUO H.Study on the effect of steel fibers on the workability, mechanical properties, and toughness of recycled aggregate concrete[J].China Concrete and Cement Products,2025(9):106-109.

摘   要：以水为分散介质，通过高速机械剪切工艺对原状加密硅灰进行分散处理，并在分散过程中添加分散剂、稳定剂及消泡剂，成功制备出了具有良好稳定性和均质性的硅灰浆液。在此基础上，通过梯度降低水泥和胶凝材料总量，研究了硅灰浆液对C30、C60混凝土工作性、力学性能的影响。结果表明：在特定胶凝材料用量区间内，基于适量硅灰浆液配制的混凝土工作性良好，其28 d抗压强度满足C30、C60设计强度等级要求；对于C30、C60混凝土，掺入适量硅灰浆液可使水泥用量分别降低18.41%~26.54%、11.73%~16.66%。Abstract: Taking water as the dispersing medium, high-speed mechanical shearing was used to disperse the original densified silica fume, and the dispersants, stabilizers, and defoamers were added during the dispersion process to successfully prepare the silica fume slurry with good stability and homogeneity. Based on this, the effects of silica fume slurry on the workability and mechanical properties of C30 and C60 concrete were studied by gradually reducing the amounts of cement and cementitious materials. The results show that, within a specific range of cementitious material amounts, concrete prepared with an appropriate amount of silica fume slurry exhibits good workability, and its 28 d compressive strength meets the requirements of C30 and C60 design strength grade. For C30 and C60 concrete, the addition of an appropriate amount of silica fume slurry can reduce the cement amount by 18.41%~26.54% and 11.73%~16.66%, respectively.

黄小川,高健,陶俊,等.硅灰浆液的制备及其对混凝土工作性和力学性能的影响[J].混凝土与水泥制品,2025(9):101-105,119. HUANG X C,GAO J,TAO J,et al.Preparation of silica fume slurry and its effect on workability and mechanical property of concrete[J].China Concrete and Cement Products,2025(9):101-105,119.

摘   要：介绍了固废基泡沫混凝土的胶凝材料种类，综述了矿渣粉、粉煤灰、拜耳法赤泥、金属尾矿渣对泡沫混凝土性能的影响，介绍了固废基泡沫混凝土稳定性、干燥收缩性能的优化方法，指出了当前研究存在的不足，并展望了未来研究的发展方向。Abstract: The cementitious materials types of solid waste-based foamed concrete are introduced, and the effects of slag powder, fly ash, bayer process red mud, and metal tailings on the performance of foamed concrete are comprehensively reviewed. The optimization methods for the stability and drying shrinkage of solid waste-based foamed concrete are systematically presented. Shortcomings in current research are pointed, and future research directions are envisioned.

胡忠帅,杨勇,王永康,等.固废基泡沫混凝土的研究现状及性能优化研究进展[J].混凝土与水泥制品,2025(9):97-100. HU Z S,YANG Y,WANG Y K,et al.Research status and performance optimization progress of solid waste-based foamed concrete[J].China Concrete and Cement Products,2025(9):97-100.

摘   要：以电石渣作为碱激发剂，采用矿渣和黄金尾矿粉部分取代水泥制备了电石渣激发矿渣-尾矿粉复合固废基胶凝材料砂浆，并研究了砂浆的流动度、强度和净浆水化热。结果表明：随着电石渣掺量的增加，砂浆的流动度降低，抗压强度先增加后降低，抗折强度增加，当电石渣掺量为8%时，砂浆的抗压强度最大；电石渣提供的碱性环境会促进矿渣、尾矿粉中活性成分的火山灰反应，对胶凝材料体系的初始水化放热速率有明显的激发效果，整个胶凝材料体系水化速率显著加快，同时，累计水化放热量也增加。Abstract: A composite solid waste based cementitious material mortar was prepared by using calcium carbide slag as an alkali activator and partially replacing cement with gold tailings powder and slag. The fluidity, strength of mortar, and hydration heat of slurry were studied. The results show that with the increase of calcium carbide slag content, the fluidity of the mortar decreases, the compressive strength first increases and then decreases, and the flexural strength increases. When the calcium carbide slag content is 8%, the compressive strength of the mortar is the highest. The alkaline environment provided by calcium carbide slag promotes the volcanic ash reaction of active components in slag and tailings powder, which has a significant stimulating effect on the initial hydration heat release rate of the cementitious material system. The hydration rate of the entire cementitious material system is significantly accelerated, and the cumulative hydration heat release increases.

刘志强,王越,杨斌,等.电石渣激发矿渣-尾矿粉复合固废基胶凝材料性能试验研究[J].混凝土与水泥制品,2025(9):93-96. LIU Zhiqiang, WANG Yue, YANG Bin,Experimental study on properties of slag and tailing powder composite solid waste based cementitious materials stimulated by calcium carbide slag[J].China Concrete and Cement Products,2025(9):93-96.