工艺与制造英文2021被引 53
玄武岩纤维增强复合材料（BFRP）钢筋混凝土的耐久性和力学性能：面向可持续基础设施
Durability and Mechanical Properties of Concrete Reinforced with Basalt Fiber-Reinforced Polymer (BFRP) Bars: Towards Sustainable Infrastructure
Osama Ahmed Mohamed, Waddah Al Hawat, Mohammad Keshawarz · Abu Dhabi University
摘要整理
减少基础设施的环保足迹已成为工程师和研究人员关注的重点。未来建筑需要在施工期间产生最小环境影响，并保持尽可能长的耐久性。本文通过回顾过去二十年的文献，重点审视了玄武岩纤维增强复合材料（BFRP）钢筋作为碳钢替代品的应用，重点关注抗弯强度、使用性和耐久性。文章介绍、比较并讨论了选定设计和施工规范中弯曲构件的规定。研究表明，当BFRP采用螺旋缠绕和砂浆涂层处理时，其与混凝土的粘结性能优于碳钢。试验研究证实，对于砂浆涂层的BFRP螺纹钢筋（螺旋缠绕），粘结系数kb=0.8可被采用，优于ACI440.1R-15建议的保守值1.4。基于规范的模型高估了BFRP钢筋梁的开裂荷载，但低估了极限荷载。在60°C高温下暴露于碱性环境中，BFRP粘结强度的降低有限。BFRP钢筋的耐久性受到生产钢筋所用树脂类型和浆料的影响。
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