Abstract
This paper illustrates the experimental investigations results on the material properties of both high strength concrete (HSC-N60) and normal strength concrete (NSC-N32) at early ages. The experiments included compression strength test, splitting tensile strength, modulus of elasticity and fracture energy test by wedge splitting test. The tests were conducted at ages of 18 h, 24 h, 48 h, 72 h, 7, 14 and 28 days. The experimental programs included testing of 126 compressive, tensile strength test and modulus of elasticity cylinders. In addition, wedge splitting specimens size (150 × 150 × 150) mm were tested. It was found that the strength gain rate of HSC was higher than that of NSC at early ages. The results showed that the compressive strength, splitting tensile strength and modulus of elasticity for both NSC and HSC increased with the age of concrete. Accordingly, the fracture energy strengths of both NSC and HSC increased with as the concrete ages.
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Acknowledgements
The first author wishes to express his thanks to Higher Committee for Education Development in Iraq (HCED) which provided scholarship to the first author. The authors would like to acknowledge the technical staff at Swinburne university (Smart Structures Laboratory) for their efforts during the experimental tests.
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AL-Yousuf, A., Gad, E., Abdouka, K., Lee, J., Pokharel, T. (2020). Investigations of Early Age Material Properties of Normal and High Strength Concrete Including Fracture Energy. In: Wang, C., Ho, J., Kitipornchai, S. (eds) ACMSM25. Lecture Notes in Civil Engineering, vol 37. Springer, Singapore. https://doi.org/10.1007/978-981-13-7603-0_32
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