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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국콘크리트학회 International Journal of Concrete Structures and Materials International Journal of Concrete Structures and Materials Vol.12 No.1
- 발행연도
- 2018.1
- 수록면
- 125 - 135 (11page)
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초록· 키워드
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Rehabilitation and repair of flexible pavements produce huge amounts of reclaimed asphalt pavement (RAP) material. Using RAP in the formulation of portland cement concrete (PCC) is a technique that is part of a sustainable development approach since it reduces on the consumption of new aggregates and reuses a material that is considered as waste. This paper describes the semi-adiabatic calorimetry test performed on a concrete mix incorporating RAP material as aggregate. Results showed that the cement hydration process is not affected by the presence of asphalt coated on the surface of RAP material. Classical tests (compressive strength, flexural and indirect-tensile strengths, elastic modulus, and free-shrinkage) were also performed on PCC mixes incorporating different percentages of RAP. It was found that as the percentage of RAP increases, the PCC mechanical properties decrease. This is mainly attributed to the presence of voids in the transition zone between the asphalt-coated aggregates and the hydrated cement paste as confirmed by scanning-electron microscope images. Unrestrained shrinkage testing showed statistically insignificant change in shrinkage strain with RAP content. The strength and shrinkage results lead to conclude that as much as 40% of RAP could be incorporated into the formulation of PCC and achieve properties that are acceptable for the construction of rigid pavements.
목차
Abstract
1. Introduction
2. Research Background
3. Materials
4. Laboratory Testing Program
5. Semi-adiabatic Calorimetry Testing
6. Effect of RAP Content on Properties of PCC
7. Effects of RAP Gradation (Fine or Coarse) on PCC Properties
8. Summary and Conclusions
References
참고문헌 (34)
참고문헌 신청
Abdel-Mohti, A., Shen, H., & Khodair, Y. (2016). Characteristics of self-consolidating concrete with RAP and SCM. Construction and Building Materials, 102, 564?573.
AFNOR. (1992). Chausse´es en be´ton de ciment, exe´cution et contro?le, NFP 98-170.
Al-Oraimi, S., Hassan, H. F., & Hago, A. (2009). Recycling of reclaimed asphalt pavement in portland cement concrete. The Journal of Engineering Research, 6(1), 37?45.
Ben Othmen, R., El Euch Khay, S., Louizi, A., & Neji, J. (2013). Compacted-sand concrete for pavement- tests show suitability of sea-dredged materials aggregate. Concrete International, 35(1), 34?38.
Bermel, B N. (2011). Feasibility of reclaimed asphalt pavement as aggregate in portland cement concrete pavement. Master of Science Thesis, Montana State University, Bozeman, Montana
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