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Effect of elevated temperature on mechanical properties of early-age concrete

Effect of elevated temperature on mechanical properties of early-age concrete This paper reports the laboratory measurement of ultrasonic pulse velocity and compressive strength on early-age concrete exposed to elevated temperature. Concrete specimens were cast with 0.5 and 0.6 water–cement ratios and cured for 3, 7 and 28 days. After each curing period, samples were exposed to peak temperatures of 400 °C, 600 °C and 800 °C in the electric muffle furnace and cooled down to the normal temperature by using air cooling and quenching. Ultrasonic wave velocity was produced using a standard ultrasonic pulse velocity tester. The compressive strength was determined by crushing the samples. It was observed that the water–cement ratio affects the pulse velocity and strength of concrete subjected to elevated temperature. Recovery in strength and pulse velocity was found for the first seven days of post-fire curing. Maximum recovery after 28 days post-fire water curing was observed in the concrete sample heated at the age of 3 days and cooled down to the normal temperature by the method of air cooling. Correlations between pulse velocity and strength were suggested which can be used as a nondestructive practice to evaluate the residual compressive strength ratio quantitatively. However, the relationship is strongly dependent on the moisture condition of the concrete. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Innovative Infrastructure Solutions Springer Journals

Effect of elevated temperature on mechanical properties of early-age concrete

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Publisher
Springer Journals
Copyright
Copyright © 2019 by Springer Nature Switzerland AG
Subject
Earth Sciences; Geotechnical Engineering & Applied Earth Sciences; Environmental Science and Engineering; Geoengineering, Foundations, Hydraulics
ISSN
2364-4176
eISSN
2364-4184
DOI
10.1007/s41062-019-0254-8
Publisher site
See Article on Publisher Site

Abstract

This paper reports the laboratory measurement of ultrasonic pulse velocity and compressive strength on early-age concrete exposed to elevated temperature. Concrete specimens were cast with 0.5 and 0.6 water–cement ratios and cured for 3, 7 and 28 days. After each curing period, samples were exposed to peak temperatures of 400 °C, 600 °C and 800 °C in the electric muffle furnace and cooled down to the normal temperature by using air cooling and quenching. Ultrasonic wave velocity was produced using a standard ultrasonic pulse velocity tester. The compressive strength was determined by crushing the samples. It was observed that the water–cement ratio affects the pulse velocity and strength of concrete subjected to elevated temperature. Recovery in strength and pulse velocity was found for the first seven days of post-fire curing. Maximum recovery after 28 days post-fire water curing was observed in the concrete sample heated at the age of 3 days and cooled down to the normal temperature by the method of air cooling. Correlations between pulse velocity and strength were suggested which can be used as a nondestructive practice to evaluate the residual compressive strength ratio quantitatively. However, the relationship is strongly dependent on the moisture condition of the concrete.

Journal

Innovative Infrastructure Solutions – Springer Journals

Published: Dec 16, 2019

References

  • Strength and durability recovery of fire-damaged concrete after post-fire-curing
    Poon, CS; Azhar, S; Anson, M; Wong, YL
  • The effect of post-fire-curing on strength–velocity relationship for nondestructive assessment of fire-damaged concrete strength
    Lin, Y; Hsiao, C; Yang, H; Lin, Y
  • Mechanical properties and microstructure of high strength concrete containing polypropylene fibers exposed to temperatures up to 200 C
    Noumowe, A
  • Ultrasonic testing of concrete after exposure to high temperatures
    Chung, HW
  • Effects of elevated temperatures on properties of concrete containing ground granulated blast furnace slag as a cementitious material
    Li, Q; Li, Z; Yuan, G
  • Effect of exposure time and rates of heating -and cooling on residual strength of heated concrete
    Mohamedbhai, GTG
  • Evaluating residual compressive strength of concrete at elevated temperatures using ultrasonic pulse velocity
    Yang, H; Lin, Y; Hsiao, C; Liu, JY
  • Post-fire assessment of mechanical properties of concrete with the use of the impact-echo method
    Katarzyna, K; Hager, I
  • Evaluation of residual mechanical properties of concrete after exposure to high temperatures using impact resonance method
    Park, S; Yim, HJ
  • Experimental study of mechanical properties of normal-strength concrete exposed to high temperatures at an early age
    Chen, B; Li, C; Chen, L
  • Performance evaluation of RPC exposed to high temperature combining ultrasonic test : a case study
    Gong, J; Deng, G; Shan, B
  • Effect of high temperatures on high-performance steel fiber-reinforced concrete
    Lau, A; Anson, M
  • Application of petrographic examination techniques to the assessment of fire-damaged concrete and masonry structures
    Ingham, JP
  • Mechanical properties of lightweight concrete made with coal ashes after exposure to elevated temperatures
    Ahn, YB; Jang, JG; Lee, HK
  • Concrete filled PVC tube : a review
    Abdulla, NA
  • The effect of temperature on the compressive strength of concrete
    Malhotra, H
  • The effects of high temperature on compressive and flexural strengths of ordinary and high-performance concrete
    Husem, M
  • The effects of rapid cooling by water quenching on the stiffness properties of fire-damaged concrete
    Nassif, A; Rigden, S; Burley, E
  • Laboratory measurement of elastic waves in Basalt rock
    Juneja, A; Endait, M
  • Mechanical properties of high-strength concrete after fire
    Li, M; Qian, C; Sun, W