Advances in concrete construction

  • 제6권3호
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  • Pages.297-309
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  • 2018
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  • 2287-5301(pISSN)
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  • 2287-531X(eISSN)
테크노프레스 (Techno-Press)
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Modeling of ultimate value and kinetic of compressive strength and hydration heat of concrete made with different replacement rates of silica fume and w/b ratios

  • Djezzar, Mahdjoub (Laboratory Geomaterials, University Hassiba Benbouali of Chlef) ;
  • Ezziane, Karim (Laboratory Geomaterials, University Hassiba Benbouali of Chlef) ;
  • Kadri, Abdelkader (Laboratory Geomaterials, University Hassiba Benbouali of Chlef) ;
  • Kadri, El-Hadj (Laboratory L2MGC, University of Cergy Pontoise)
  • 투고 : 2017.12.31
  • 심사 : 2018.04.17
  • 발행 : 2018.06.25
⟨ 이전 논문 다음 논문 ⟩

초록

The objective of this study was to evaluate the influence of silica fume (SF) on the hydration heat and compressive strength of concrete. Portland cement with w/(c+sf) ratios varying between 0.25 to 0.45 was substituted by 10%, 20% and 30% of SF by mass. A superplasticizer was used to maintain a fluid consistency of the concrete. The heat of hydration was monitored continuously by a semi-adiabatic calorimetric method for 10 days at $20^{\circ}C$. Compressive strengths are tested for each mixture until age of 180 days. The results show that silica fume considerably influences the evolution and the ultimate values of the compressive strengths as well as the hydration heat especially for 10% rate. The w/b ratio has a considerable effect where its decrease modifies compressive strength and hydration heat more than silica fume. The correlation of the obtained results allows deducing of ultimate properties as well as the ages to reach half of their values. The correlation coefficients are close to unity and reflect the judicious choice of these relationships to be used to predict compressive strength and hydration heat.

키워드

참고문헌

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피인용 문헌

  1. Evaluation of mathematical models for prediction of slump, compressive strength and durability of concrete with limestone powder vol.10, pp.6, 2018, https://doi.org/10.12989/acc.2020.10.6.463