International Journal of Concrete Structures and Materials

  • 제4권1호
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  • Pages.37-43
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  • 2010
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  • 1976-0485(pISSN)
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  • 2234-1315(eISSN)
한국콘크리트학회 (Korea Concrete Institute)
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Mechanical Properties of Hydrated Cement Paste: Development of Structure-property Relationships

  • Ghebrab, Tewodros T. (Dept. of Engineering Technology, Texas Tech University) ;
  • Soroushian, Parviz (Dept. Civil and Environmental Engineering, Michigan State University)
  • 투고 : 2009.09.10
  • 심사 : 2010.03.30
  • 발행 : 2010.06.30
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초록

Theoretical models based on modern interpretations of the morphology and interactions of cement hydration products are developed for prediction of the mechanical properties of hydrated cement paste (hcp). The models are based on the emerging nanostructural vision of calcium silicate hydrate (C-S-H) morphology, and account for the intermolecular interactions between nano-scale calcium C-S-H particles. The models also incorporate the effects of capillary porosity and microcracking within hydrated cement paste. The intrinsic modulus of elasticity and tensile strength of hydrated cement paste are determined based on intermolecular interactions between C-S-H nano-particles. Modeling of fracture toughness indicates that frictional pull-out of the micro-scale calcium hydroxide (CH) platelets makes major contributions to the fracture energy of hcp. A tensile strength model was developed for hcp based on the linear elastic fracture mechanics theories. The predicted theoretical models are in reasonable agreements with empirical models developed based on the experimental performance of hcp.

키워드

참고문헌

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피인용 문헌

  1. Material Performance and Animal Clinical Studies on Performance-Optimized Hwangtoh Mixed Mortar and Concrete to Evaluate Their Mechanical Properties and Health Benefits vol.8, pp.9, 2015, https://doi.org/10.3390/ma8095306
  2. Nano–micro modelling of mechanical properties of cement paste based on molecular dynamics vol.28, pp.2, 2016, https://doi.org/10.1680/adcr.15.00048