Properties of Concretes with Natural and Recycled Coarse Aggregates

doi: 10.14456/mijet.2016.11

Authors

  • Rattapon Somna Rajamangala University of Technology Isan
  • Apiruk Martnok Rajamangala University of Technology Isan
  • Suksun Horpibulsuk Suranaree University of Technology

Keywords:

concrete, recycled aggregate, moisture, UPV

Abstract

This research studied effects of moisture and absorption of natural and recycled coarse aggregates on properties of concretes. The effects of two moisture states, air-dried state (AD) and saturated surface dry state (SSD), of both aggregates were investigated. Recycled coarse aggregate was used to replace crushed limestone at 25 and 100 percent by volume. The compressive strength, ultrasonic pulse velocity (UPV), and modulus of elasticity of concretes were determined. The results revealed that the coarse aggregates in SSD state gave higher compressive strength than those in AD state. The moisture states of aggregate did not affect the UPV of concrete but the replacement of crushed limestone by recycled aggregate reduced the UPV. The cracks on cement paste of the recycled coarse aggregate increases the distance for wave travel passing through concrete. The modulus of elasticity of concrete is independent of the moisture states of recycled coarse aggregate but dependent on the strength of concrete.

Author Biographies

Rattapon Somna, Rajamangala University of Technology Isan

Department of Civil Engineering, Faculty of Engineering and Architecture

Apiruk Martnok, Rajamangala University of Technology Isan

Department of Civil Engineering, Faculty of Engineering and Architecture

Suksun Horpibulsuk, Suranaree University of Technology

School of Civil Engineering, and Center of Excellence in Innovation for sustainable Infrastructure Development

References

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Published

2016-12-31

How to Cite

Somna, R., Martnok, A., & Horpibulsuk, S. (2016). Properties of Concretes with Natural and Recycled Coarse Aggregates: doi: 10.14456/mijet.2016.11. Engineering Access, 2(2), 20–24. Retrieved from https://ph02.tci-thaijo.org/index.php/mijet/article/view/10.14456.mijet.2016.11

Issue

Section

Research Papers