摘要
考虑各地区配制混凝土的常用材料、配合比不同造成超声回弹综合法检测混凝土强度精度降低的问题,选取福州地区常用材料制备了混凝土试块并进行了超声回弹综合法的强度测试。通过对测试数据的比较分析发现,全国统一的测强曲线在对福州地区混凝土强度预测过程中误差过大,存在一定的适用性问题;通过进一步对试验数据的拟合分析,初步建立了福州地区超声回弹综合法测强曲线并验证了其有效性。
Due to the different utilization of raw material and different selection of the concrete mix proportion, the precision of the prediction on the concrete strength when using uhrasonic-rebound combined method might be reduced. The material, as well as the concrete mix proportion which are common used in Fuzhou region are selected and the standard concrete samples are casted. Ultrasonic-rebound combined method is used to predict the strength of the samples. After comparing of the test results and the prediction results, it is found that the prediction curve suggested in current national code is not guaranteed precise result. And then optimization method is used to fit a local strength prediction curve. The curve is then validated with more test results.
出处
《混凝土与水泥制品》
2017年第5期74-78,共5页
China Concrete and Cement Products
基金
福建省交通运输厅交通运输科技发展重点项目(201209)
国家自然科学基金面上基金项目(51578159)
福建船政交通职业学院科技服务团队(公路桥隧安全检测与加固改造技术)资助项目
关键词
超声回弹综合法
测强曲线
数据拟合
混凝土强度
试验平台
Ultrasonic-rebound combined method
Prediction curves of concrete strength
Data fitting
Concretestrength
Testing platform
