增强面板混凝土抗裂性能技术研究  

Study on the Technology of Enhancing the Crack Resistance of Face Concrete

作　　者：吴文博 赵坤龙 樊李浩 WU Wenbo;ZHAO Kunlong;FAN Lihao(PowerChina Northwest Engineering Corporation Limited,Xi'an 710100,China)

机构地区：[1]中国电建集团西北勘测设计研究院有限公司,陕西省西安市710100

出　　处：《水电与抽水蓄能》2022年第3期99-102,共4页Hydropower and Pumped Storage

摘　　要：高堆石坝面板的开裂严重影响大坝防渗性能及运行安全。针对目前高堆石坝面板易开裂的问题,本文研究了WHDF增密剂和纤维的掺合对面板混凝土抗裂性和力学性能的影响。研究发现,增密剂及纤维的掺合对混凝土抗裂性能的提升有明显效果,其提高混凝土抗裂性能显著性顺序依次为:增密剂和纤维双掺、纤维单掺合增密剂单掺。The crack of high rockfill dam concrete face seriously affects its permeability resistance and operation safety.Aiming at the problem that the concrete face of the high rockfill dam is easy to crack,this paper studies the influence of mixing WHDF densifier and fiber on the crack resistance and other mechanical properties of concrete face.It is found that mixing the densifier and fiber has obvious effect on the improvement of concrete crack resistance.The significant order of improving crack resistance of concrete is as follows:both mixing densifier and fiber,alone mixing fiber and alone mixing WHDF densifier.

关 键 词：混凝土面板堆石坝 抗裂性 WHDF增密剂 纤维 

分 类 号：TM206[一般工业技术—材料科学与工程]