AI Article Synopsis
- The study examined how different sizes of coarse aggregates (12.5mm to 50.0mm) affect the ultrasonic pulse velocity (UPV) in concrete.
- Concrete specimens were created with varying sand to aggregate ratios, water-to-cement ratios, and cement contents, and then tested for compressive strength and Young's modulus.
- Results showed that larger aggregate sizes led to higher UPV, with proposed relationships indicating how UPV correlates with compressive strength and Young's modulus based on aggregate size.
Article Abstract
Investigation was carried out to study the effects of maximum aggregate size (MAS) (12.5mm, 19.0mm, 25.0mm, 37.5mm, and 50.0mm) on ultrasonic pulse velocity (UPV) of concrete. For investigation, first class bricks were collected and broken to make coarse aggregate. The aggregates were tested for specific gravity, absorption capacity, unit weight, and abrasion resistance. Cylindrical concrete specimens were made with different sand to aggregate volume ratio (s/a) (0.40 and 0.45), W/C ratio (0.45, 0.50, and 0.55), and cement content (375kg/m(3) and 400kg/m(3)). The specimens were tested for compressive strength and Young's modulus. UPV through wet specimen was measured using Portable Ultrasonic Non-destructive Digital Indicating Tester (PUNDIT). Results indicate that the pulse velocity through concrete increases with an increase in MAS. Relationships between UPV and compressive strength; and UPV and Young's modulus of concrete are proposed for different maximum sizes of brick aggregate.
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| http://dx.doi.org/10.1016/j.ultras.2016.04.006 | DOI Listing |
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