探索超小直径混凝土芯样与标准芯样之间的强度关系——材料选择与测试  

Exploration of Strength Relationship between the Ultra-small Diameter Concrete Core Sample and the Standard Core Sample: Material Selection and Testing

作　　者：刘梦溪[1] 刘晓鹏 王彦君[3] 陈莉 LIU Meng-xi;LIU Xiao-peng;WANG Yan-jun;CHEN Li(Jiangsu Vocational Institute of Architectural Technology,Xuzhou 221008,China;China National Grid Chongqing Electric Power Company Construction Branch,Chongqing 400047,China;Jiangsu Geology and Mineral Resources Design Institute,Xuzhou 221008,China;Xuzhou City Hongda Civil Engineering Laboratory Limited Liability Company,Xuzhou 221000,China)

机构地区：[1]江苏建筑职业技术学院,徐州221008 [2]国网重庆市电力公司建设分公司,重庆400047 [3]江苏地质矿产设计研究院,徐州221008 [4]徐州市宏达土木工程试验室有限责任公司,徐州221000

出　　处：《价值工程》2025年第5期91-94,共4页Value Engineering

摘　　要：使用当地原材料的预拌混凝土,在现场制作成型混凝土板及试块,养护到28天在混凝土板上进行了取芯,在混凝土试块上进行了超声回弹及抗压实验,获取了大量试验数据,本次试验重点研究了φ30.5mm×30.5mm;φ35mm×35mm;φ42mm×42mm混凝土小芯样强度值与混凝土标准芯样和标准试块强度值之间的相关关系,通过回归分析并结合以前研究的成果,得出关于小直径芯样强度的结论,用于探索在工程中的实际应用,弥补小直径芯样的空白。Local raw materials of ready--mixed concrete were used to make molded concrete slabs and test blocks on site.After curing for 28 days,core was taken on the concrete slabs,ultrasonic rebound and compressive tests were carried out on the concrete test blocks,and a large number of test data were obtained.The test focused on 30.5mm×30.5mm;35mm×35mm.Based on the correlation between the strength value of 42mm×42mm concrete small core sample and the strength value of concrete standard core sample and standard test block,through regression analysis and combining the results of previous studies,the conclusion on the strength of small diameter core sample is drawn,which is used to explore the practical application in engineering and make up the blank of small diameter core sample.

关 键 词：混凝土 钻芯法 芯样 抗压强度 

分 类 号：U416.216[交通运输工程—道路与铁道工程]