摘要
分别制作以碎石、卵石为粗骨料的不同混凝土强度等级的立方体标准试块(150mm×150mm×150mm),分别在不同的龄期进行超声、回弹测试和抗压试验,建立混凝土强度—超声声速—回弹值的数学模型。研究结果表明在配合比相同的情况下,不同粗骨料类型泵送混凝土的抗压强度、超声声速值、回弹值有很大差异。
Two kinds of coarse aggregate： gravel and pebbles concrete standard cube test blocks（ 150mm ×150mm × 150mm）, are used to make different grade of making ultrasound test, rebound test and compressive strength test at different age. Strength curve of ultrasonic-rebound combined method is set up. The results show that in the same mixture ratio case, the compressive value, rebound value and strength curve of different type of coarse aggregate strength, ultrasonic velocity of pumping concrete havegreat difference.
出处
《低温建筑技术》
2014年第1期20-22,共3页
Low Temperature Architecture Technology
关键词
粗骨料
超声-回弹测强
配合比
coarse aggregate
ultrasonic-rebound
mixture ratio
