| Summary: | 碩士 === 國立屏東科技大學 === 土木工程系所 === 101 === The Contents of Abstract in this Thesis:
In this paper, the compressive strength of the concrete of complete structure by using the test of drilled cores with respect to different core sizes has been investigated. Two concrete retaining walls were placed on-site. The strengths of the concrete used for retaining walls are 175kg/cm2 and 280 kg/cm2. After one year, the cores were drilled and test. The diameters of the cores are 5.0 cm, 7.5 cm, 10.0 cm and 15.0 cm with L/D ratio equaling 2. Based on the test results, the relationship between the core size and the compressive strength of the concrete of structure are discussed. The proper drilled core size for the on-site drilled cores has been suggested.
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