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工业建筑  2012 

高强、超高强混凝土抗火性研究进展综述

DOI: 10.13204/j.gyjz2011205026

Keywords: 混凝土,抗火性,纤维,高温爆裂,超高强混凝土,高强混凝土

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Abstract:

回顾了国内外高强混凝土和超高强混凝土抗火性研究进展,并展望了超高强混凝土(特别是活性粉末混凝土)的下一步研究方向。高强混凝土的高温强度损失与普通混凝土基本类似,但其主要弱点是高温爆裂,可采用聚合物纤维或钢纤维予以抑制。活性粉末混凝土抗火性研究的主要目标应是抑制高温爆裂,减小乃至消除高温爆裂发生的可能性。需要进一步研究宏观断裂性能与微观结构特征,建立活性粉末混凝土抗火性改善的机理,提出确保抗火性的技术途径。

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