Use of Small Break-off Test for Prediction of Concrete Strength and Evaluation of Adhesive Strength between Steel Bar and Concrete

• Main Authors: Chen-IanMing, 陳彥名
• Other Authors: Lin Yi-ching
• Format: Others
• Language: zh-TW
• Published: 2001
• Online Access: http://ndltd.ncl.edu.tw/handle/24765825062456526682

碩士 === 國立中興大學 === 土木工程學系 === 89 === Abstract The objective of the thesis is to perform feasibility study of using a newly developed nondestructive technique called small break-off test for prediction of concrete strength and evaluation of adhesive strength between steel bar and concrete. In addition, the relationship of compressive strength between tiny cores and conventional cores is investigated Twelve specimens are constructed using three different mixtures of concrete associated with 490, 350, and 280kg/cm2. Ribbed and round steel bar with three different sizes of ＃7,＃8,and ＃10 are placed in the concrete specimens . Experimental results show that the break-off number has a good correlation with the adhesive strength. between steel bar and concrete. In addition, the break-off number is proportional to the strength of tiny cores.