吉林大学学报(工学版) ›› 2026, Vol. 56 ›› Issue (1): 1-20.doi: 10.13229/j.cnki.jdxbgxb.20240564
• 综述 • 下一篇
Ya-lin LIU1(
),Cheng-ze LI1,Shu LI2,Ya WEI3(
)
摘要:
本文介绍了烧结铝矾土(CB)骨料的制备工艺、产品分级、物理及力学性能等,并全面回顾和总结国内外学者对CB骨料在制备超高性能混凝土(UHPC)、改善UHPC力学和体积稳定性、提升道路表面耐磨性、抗滑性能以及在制备抗冲击水泥基材料等方面的研究成果和最新进展,并系统阐释了CB骨料对材料各项性能的影响机理。本文结果表明:①CB骨料主要由高强且化学性能稳定的刚玉和莫来石构成,其力学性能(强度、硬度、耐磨性等)显著优于花岗岩、石灰岩等常规骨料;②较低氧化铝含量的CB骨料孔隙率较高,适合作为内养护介质以有效降低UHPC收缩及开裂风险,CB骨料自身高强度及内养护对水化程度的促进,共同提升UHPC力学性能;③高氧化铝含量的CB骨料(>80%)以其更高硬度及耐磨物理力学性能特点适合制备特殊路面表层,可显著提升道路初始及长期耐磨、抗滑性能,形成的一种高耐磨表面处理技术(HFST),已在国外已广泛应用;④CB骨料高强及高硬度特性可有效磨损冲击弹丸端头或吸收更高的冲击破坏能量,从而显著提高水泥基材料的抗冲击性能。
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