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ความสัมพันธ์ระหว่างการทดสอบค่ากำลังรับแรงอัดคอนกรีตแบบทำลายกับการประเมินโดยวิธีค้อนกระแทก |
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| รหัสดีโอไอ | |
| Creator | อรุณเดช บุญสูง |
| Title | ความสัมพันธ์ระหว่างการทดสอบค่ากำลังรับแรงอัดคอนกรีตแบบทำลายกับการประเมินโดยวิธีค้อนกระแทก |
| Contributor | - |
| Publisher | King Mongkut’s University of Technology Thonburi |
| Publication Year | 2564 |
| Journal Title | KMUTT Research and Development Journal |
| Journal Vol. | 44 |
| Journal No. | 4 |
| Page no. | 623-634 |
| Keyword | Concrete Compressive Strength, Destructive Test, Non-Destructive Test, Schmidt’s Hammer, Coring |
| URL Website | https://journal.kmutt.ac.th/ |
| Website title | เว็บไซต์วารสารวิจัยและพัฒนา มจธ. |
| ISSN | 2697-5521 |
| Abstract | This research aimed to study compressive strength values of concrete withcuring periods of 7, 14, 21, 28, 90 and 120 days using either a destructive ornon-destructive test; the latter was conducted via the Schmidt’s hammermethod. The target compressive strength value of concrete mixture with 28-day curing period was 240 ksc. The research included 3 types of concrete,which are cube, cylinder and cored cylinder. Destructive test results showedthat compressive strength of concrete block with 7-day curing was 60% of thatof the block after 28-day curing. Non-destructive test results on compressivestrength of the samples cured for 7 to 120 days ranged from 199.0 to 367.2 kcs.Hardness of concrete surface rapidly increased after being cured for 7 days; itsinitial compressive strength was therefore relatively high when compared withthose of cylindrical and cored cylinder samples. In addition, the results showedthat compressive strength values of both cubic and cylindrical samples were24% and 9% higher, respectively, than the values assessed with the reboundhammer. On the other hand, compressive strength value of the coredcylindrical sample was 20% lower. Compressive strength values as obtainedvia the destructive and non-destructive tests could be mathematically correlatedvia a polynomial equation. |
