摘   要：采用等温量热法、热重分析、压汞法、SEM分析研究了三乙醇胺（TEA）早强剂对大掺量石灰石粉胶凝材料体系水化的影响，并与CaCl2早强剂进行了对比。结果表明：相较于不掺早强剂组，掺早强剂组水泥浆体的放热速率峰值均有所提高，CaCl2对纯水泥体系水化的加速程度高于对大掺量石灰石粉胶凝材料体系，而TEA则正相反；早强剂对大掺量石灰石粉胶凝材料体系前期水化的促进作用明显，虽然TEA对后期水化仍有一定的促进作用，但作用程度不高；早强剂加入后，样品的孔隙率降低，孔径得到细化，C-S-H、Ca(OH)2、AFt等水化产物增多，微观结构密实度得到提高。Abstract: The effect of triethanolamine (TEA) early strength agent on the hydration of high content limestone powder cementitious material system was studied compared with CaCl2 early strength agent by using isothermal calorimetry, thermogravimetric analysis, mercury intrusion porosimetry, and SEM analysis. The results show that compared with the group without early strength agent, the peak heat release rate of the cement slurry in the group with early strength agent is increased. CaCl2 accelerates the hydration of pure cement system more than that of the system with large content of limestone powder cementitious material, while TEA has the opposite effect. The early strength agent has a significant promoting effect on the early hydration of the high content limestone powder cementitious material system. Although TEA has a certain promoting effect on the later hydration, the degree of effect is not high. After the addition of early strength agent, the porosity of the sample decreases, the pore size is refined, the content of hydration products such as C-S-H, Ca(OH)2, AFt increase, and the microstructure density increases.

邹璇,郝瑞甫,齐敦哲,等.早强剂对大掺量石灰石粉胶凝材料体系水化的影响研究[J].混凝土与水泥制品,2025(10):41-46. ZOU X,HAO R P,QI D Z,et al.Study on the influence of early strength agent on the hydration of high content limestone powder cementitious material system[J].China Concrete and Cement Products,2025(10):41-46.

杨宗广,杨宏睿,侯永利,等.石灰石粉对大掺量粉煤灰混凝土早期抗压强度及微观结构的影响研究[J].混凝土与水泥制品,2025(10):47-51. YANG Z G,YANG H R,HOU Y L,et al.Effect of limestone powder on the early compressive strength and microstructure of high volume fly ash concrete[J].China Concrete and Cement Products,2025(10):47-51.

摘   要：采用凝灰岩石粉部分替代水泥（掺量为0、5%、10%、15%、20%）制备了水泥-石粉复合胶凝材料体系净浆（胶凝体系）及砂浆，研究了石粉对胶凝体系标准稠度用水量、凝结时间、流动度、体积稳定性和砂浆力学性能的影响，采用恒温量热法与XRD分析了胶凝体系的水化进程及水化产物。结果表明：随着石粉掺量的增加，胶凝体系的标准稠度用水量基本呈增加趋势，凝结时间先缩短后延长，流动度整体呈降低趋势；适量掺入石粉可降低胶凝体系的开裂敏感性，在一定程度上抑制裂缝的产生及发展，提高体积稳定性，当石粉掺量为15%时，胶凝体系的首裂时间较晚且裂缝宽度较小，开裂敏感度最低；随着石粉掺量的增加，试件的7 d和28 d抗折强度及抗压强度基本呈先增加后降低的趋势；适量掺入石粉可促进胶凝体系的早期水化，提高早期水化放热速率、水化放热量，当石粉掺量为15%时，胶凝体系水化放热速率与水化放热量较大，水化较为彻底。Abstract: A cement-stone powder composite cementitious material system slurry (cementitious system) and mortar were prepared by partially replacing cement with tuff stone powder(content of 0, 5%, 10%, 15%, 20%). The effects of stone powder on the water requirement of standard consistency, setting time, fluidity, volume stability, and mechanical properties of the cementitious system were studied. The hydration process and hydration products of the cementitious system were analyzed by constant temperature calorimetry and XRD. The results show that with the increase of stone powder content, the standard consistency water consumption of the cementitious system basically shows an increasing trend, the setting time is first shortened and then prolonged, and the overall fluidity shows a decreasing trend. Appropriate addition of stone powder can reduce the cracking sensitivity of the cementitious system, suppress the generation and development of cracks to a certain extent, and improve volume stability. When the stone powder content is 15%, the first cracking time of the cementitious system is later and the crack width is smaller, resulting in the lowest cracking sensitivity. With the increase of stone powder content, the flexural strength and compressive strength of the specimens at 7 d and 28 d show a trend of first increasing and then decreasing. The appropriate content of stone powder can promote the early hydration of cementitious system, and increase the early hydration heat release rate and hydration heat release. When the content of stone powder is 15%, the hydration heat release rate and hydration heat release of cementitious system are large, and the hydration is more  thorough.

王子健,王彦鹏,汪丽娟,等.凝灰岩石粉对水泥基材料性能的影响研究性能研究[J].混凝土与水泥制品,2025(10):52-56,65. WANG Z J,WANG Y P,WANG L J,et al.Study on the influence of tuff stone powder on the properties of cement-based materials[J].China Concrete and Cement Products,2025(10):52-56,65.

许潇.基于参数调整的石粉砂浆流变性能及流动性优化试验研究[J].混凝土与水泥制品,2025(10):57-60. XU X.Experimental study on the rheological properties and flowability optimization of stone powder mortar based on parameter adjustment[J].China Concrete and Cement Products,2025(10):57-60.

摘   要：采用玄武岩石粉制备了超高性能混凝土（Ultra-high performance concrete，UHPC），分别研究了钢纤维掺量（0、1.00%、2.00%、3.00%、4.00%、5.00%）、玄武岩纤维掺量（0、0.25%、0.50%、0.75%、1.00%、1.25%）对UHPC力学性能的影响。结果表明：随着钢纤维掺量的增加，试件的28 d抗折强度和抗压强度均增大；随着玄武岩纤维掺量的增加，试件的28 d抗折强度显著提高，28 d抗压强度提高幅度较小；相同掺量下，钢纤维对UHPC力学性能的提高效果优于玄武岩纤维。Abstract: Ultra-high performance concrete (UHPC) was prepared by using basalt stone powder, and the effects of steel fiber content (0, 1.00%, 2.00%, 3.00%, 4.00%, 5.00%) and basalt fiber content (0, 0.25%, 0.50%, 0.75%, 1.00%, 1.25%) on the mechanical properties of UHPC were studied. The results show that with the increase of steel fiber content, the 28 d flexural strength and compressive strength of the specimens increase. With the increase of basalt fiber content, the 28 d flexural strength of the specimen significantly improves, while the increase in 28 d compressive strength is relatively small. Under the same content, the improvement effect of steel fiber on the mechanical properties of UHPC is better than that of basalt fiber.

尹志灏,张佩,张东方,等.钢纤维和玄武岩纤维对玄武岩石粉超高性能混凝土（UHPC）力学性能影响研究[J].混凝土与水泥制品,2025(10):61-65. YIN Z H,ZHANG P,ZHANG D F,et al.Study on influence of steel fiber and basalt fiber on mechanical properties of ultra-high performance concrete (UHPC) with basalt stone powder[J].China Concrete and Cement Products,2025(10):61-65.

王强,杨重卿,党彦杰,等.不同岩性石粉对机制砂混凝土性能的影响[J].混凝土与水泥制品,2025(10):66-69. WANG Q,YANG Z Q,DANG Y J,et al.Influence of stone powder of different lithology on the performance of manufactured sand concrete[J].China Concrete and Cement Products,2025(10):66-69.