摘要
研究了振动搅拌合适的振源位置以及振动搅拌参数对混凝土含气量的影响,并且与目前工程中广泛使用的引气剂引气技术进行了对比.试验结果表明:在参数匹配的条件下,选择合适的振动搅拌方法同样可以有效地提高混凝土含气量,使之达到混凝土抗冻性所要求的含量.在振动搅拌的同时,加入引气剂可以取得更好的引气效果,而且,这两种方法在改善混凝土孔结构方面是优势互补的;振动搅拌还可以改善混凝土的强度等其他方面的性能.
We studied the influence of the position of vibratory source and the parameters of the vibration mixing on concrete air content.In addition,we compared it with the widely used air-entraining agent technology.The results indicate that appropriate vibration mixing method with proper combination of parameters can improve the air content of the concrete to reach the freeze protection required level as well.By adding air-entraining agent during the vibration mixing, we can obtain better result of air-entraining.What＇s more,the influence of these two methods on meliorating the structure of concrete aperture have complementary advantages.Besides,vibration mixing method can also improve concrete strength and other performance.
出处
《郑州大学学报（工学版）》
CAS
北大核心
2011年第2期42-45,共4页
Journal of Zhengzhou University（Engineering Science）
基金
国家自然科学基金资助项目(50678026)
关键词
混凝土
含气量
搅拌方式
振动搅拌
耐久性
concrete
air content
mixing method
vibrating mixing
durability
