摘   要：对比研究了高强改性聚酯（FC）纤维、聚乙烯醇（PVA）纤维、耐碱玻璃（AR）纤维的掺量（1.0、1.2、1.4 kg/m3）对机场道面混凝土抗冻、抗冲击和抗裂性能的影响，并采用TOPSIS综合评价法优选出了最佳的纤维种类和掺量。结果表明：与空白组相比，掺纤维混凝土的抗冻、抗冲击和抗裂性能均有所提高；随着纤维掺量从1.0 kg/m3增至1.4 kg/m3，试件的相对动弹性模量、破坏冲击次数比和裂缝降低系数均增大，质量损失率和裂缝总面积均减小；与AR、PVA纤维相比，掺加1.4 kg/m3的FC纤维对混凝土耐久性能的提升效果最好。 Abstract: The effects of the contents (1.0, 1.2, 1.4 kg/m3) of high-strength modified polyester (FC) fiber, polyvinyl alcohol (PVA) fiber, and alkali-resistant glass (AR) fiber on the frost resistance, impact resistance, and cracking resistance of the airport pavement concrete were comparatively investigated, and the optimum fiber type and content were selected by using the TOPSIS comprehensive evaluation method. The results show that compared with the blank group, the frost resistance, impact resistance, and cracking resistance of fiber reinforced concrete are improved. As the fiber content increases from 1.0 kg/m3 to 1.4 kg/m3, the relative dynamic elastic modulus, the ratio of the number of damaging impacts and the crack reduction coefficient of the specimens increase, and the rate of mass loss and the total area of cracks reduce. Addition of 1.4 kg/m3 of FC fiber show the best improvement in concrete durability compared to AR fiber and PVA fiber.

江圣泽,张鹏,盛昀,等.纤维增强机场道面混凝土耐久性能研究与评价[J].混凝土与水泥制品,2024(7):60-64. JIANG S Z,ZHANG P,SHENG Y,et al.Research and evaluation on durability of fiber reinforced airport pavement concrete[J].China Concrete and Cement Products,2024(7):60-64.

摘   要：研究了玄武岩纤维（BF）、纤维素纤维（CF）、玄武岩-纤维素混杂纤维（BF-CF混杂纤维）对混凝土抗冻性能的影响，并进行了SEM分析。结果表明：单掺BF或CF均能提升混凝土的抗冻性能，其中，BF的提升效果更好；随着BF或CF掺量的增加，混凝土的抗冻性能呈先提高后降低的趋势，且均优于未掺纤维组；BF-CF混杂纤维对混凝土抗冻性能的改善效果优于单掺纤维，且当BF与CF的混掺比例为2∶1时，混凝土的抗冻性能相对最优；纤维混凝土在150次冻融循环后仍能保持较为紧密的内部结构。 Abstract: The effects of basalt fiber (BF), cellulose fiber (CF), and basalt-cellulose hybrid fiber (BF-CF hybrid fiber) on the frost resistance of concrete were investigated, and SEM analysis was performed. The results show that mixing BF or CF alone can improve the frost resistance of concrete, among which, BF has a better improvement effect. With the increase of the content of BF or CF, the frost resistance of concrete shows a tendency of increasing and then decreasing, and still better than that of the unadulterated fiber group. The improvement effect of BF-CF hybrid fiber on the frost resistance of concrete is better than that of the single fiber, and the frost resistance of the concrete is relatively optimal when the mixing ratio of BF and CF is 2∶1. After 150 freeze-thaw cycles, the fiber reinforced concrete retains a relatively tight internal structure.

孙传武,王学志,辛明,等.玄武岩-纤维素混杂纤维混凝土抗冻性能研究[J].混凝土与水泥制品,2024(7):65-69. SUN C W,WANG X Z,XIN M,et al.Study on frost resistance of basalt-cellulose hybrid fiber reinforced concrete[J].China Concrete and Cement Products,2024(7):65-69.