PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
Tytuł artykułu

Correlation between compressive strengths and water absorption of fly ash cement mortar immersed in water

Treść / Zawartość
Identyfikatory
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
The compressive strength and water absorption of cement mortars with different water-binder ratio (0.35, 0.45 and 0.55) and fly ash content (0, 10%, 20% and 30%) under water immersion were investigated, and the correlation between them was further analyzed. The internal microstructure and phase composition of mortar was studied by scanning electron microscopy (SEM) and X-ray diffraction (XRD), respectively. The results show that the inside of mortar mixed with fly ash displayed the loose and porous microstructure. Therefore, the incorporation of fly ash reduced the compressive strength of mortar, especially the early strength, and the strength decreased with the increase of fly ash content, and the water absorption of mortar also increased. There was a linear correlation between the compressive strength and water absorption of mortar with the equation: fc = -3.838β + 62.332, where fc and β represented the compressive strength and water absorption, respectively. Therefore, when the water absorption of mortar immersed in water was measured, its corresponding compressive strength could be preliminarily inferred through this equation, which was of great significance for detecting and identifying the stability and safety of hydraulic structures.
Rocznik
Strony
141--152
Opis fizyczny
Bibliogr. 17 poz., il., tab.
Twórcy
autor
  • School of Civil and Architectural Engineering, Yangtze Normal University, Chongqing, China
autor
  • School of Civil and Architectural Engineering, Yangtze Normal University, Chongqing, China
Bibliografia
  • 1. J. Li, X. Zhuang, E. Monfort and et al, “Utilization of coal fly ash from a Chinese power plant for manufacturing highly insulating foam glass: Implications of physical, mechanical properties and environmental features” Construction and Building Materials, Vol.175, 2018, pp.64-76.
  • 2. P. Chindaprasirt, S. Homwuttiwong and V. Sirivivatnanon “Influence of fly ash fineness on strength, drying shrinkage and sulfate resistance of blended cement mortar” Cement Concrete Research, Vol. 34, 2004, pp.1087-1092.
  • 3. B. Babu and R. Thenmozhi, “An Investigation of the Mechanical Properties of Sintered Fly Ash Lightweight Aggregate Concrete (SFLWAC) with Steel Fibers” Archives of Civil Engineering, Vol.64, 2018, pp.73-85. doi: https://doi.org/10.2478/ace-2018-0005.
  • 4. K. Sastry, A. Ravitheja and T. Reddy, “Effect of Foundry Sand and Mineral Admixtures on Mechanical Properties of Concrete” Archives of Civil Engineering, Vol. 64, 2018, pp.117-131. doi: https://doi.org/10.2478/ace-2018-0008.
  • 5. E. Horszczaruk and P. Brzozowski, “Effects of fluidal fly ash on abrasion resistance of underwater repair concrete” Wear, Vol. 376-377, 2017, pp.15-21.
  • 6. P. Dinakar, K.G. Babu and M. Santhanam, “Durability properties of high volume fly ash self-compacting concretes” Cement and Concrete Composites, Vol. 30, 2008, pp.880-886.
  • 7. D.C. Hughes, “Sulphate resistance of OPC, OPC/fly ash and SRPC pastes: pore structure and permeability” Cement Concrete Research, Vol. 15, 1985, pp.1003-1012.
  • 8. V.M. Sánchez-Fajardo, M.E. Torres and A.J. Moreno, “Study of the pore structure of the lightweight concrete block with lapilli as an aggregate to predict the liquid permeability by dielectric spectroscopy” Construction and Building Materials, Vol. 53, 2014, pp. 225-234.
  • 9. GB/T 175-2007. Common Portland Cement, Chinese national standard, 2007.
  • 10. GB/T 17671-1999. Method of testing cements-Determination of strength, Chinese national standard, 1999.
  • 11. L. Lam, Y.L. Wong and C.S. Poon “Degree of hydration and gel/space ratio of high-volume fly ash/cement Systems” Cement Concrete Research, Vol. 30, 2000, pp.747-756.
  • 12. H.D. Yan, W. Sun and Y.M. Zhang “Hydration of high-volume fly ash cement pastes” Cement and Concrete Composites, Vol. 22, 2000, pp. 445-452.
  • 13. Q. Huang, C. Wang, Q. Zeng and et al “Deterioration of mortars exposed to sulfate attack under electrical field” Construction and Building Materials, Vol. 117, 2016, pp. 121-128.
  • 14. E. Sakai, S. Miyahara, S. Ohsawa and et al “Hydration of fly ash cement” Cement Concrete Research, Vol. 35, 2005, pp. 1135-1140.
  • 15. P. Termkhajornkit, T. Nawa and K. Kurumisawa “Effect of water curing conditions on the hydration degree and compressive strengths of fly ash-cement paste” Cement and Concrete Composites, Vol. 28, 2006, pp. 781-789.
  • 16. Q. Huang, C. Wang, C. Yang and et al “Accelerated sulfate attack on mortars using electrical pulse” Construction and Building Materials, Vol. 95, 2015, pp. 875-881.
  • 17. C.S. Poon, Y.L. Wong and L. Lam “The influence of different curing conditions on the pore structure and related properties of fly-ash cement pastes and mortars” Construction and Building Materials, Vol.11, 1997, pp.383-393.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-9efd5ea8-2228-49ed-bee9-8f6deabc25c2
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.