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Construction & building materials v.134, 2017년, pp.713 - 726   SCIE
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Effects of maximum size of brick aggregate on properties of concrete

Uddin, Mohammed Tarek (Department of Civil and Environmental Engineering, Islamic University of Technology, Board Bazar, Gazipur 1704, Bangladesh ); Mahmood, Aziz Hasan (Centre for Infrastructure Engineering and Safety (CIES), School of Civil and Environmental Engineering, University of New South Wales, Sydney, NSW 2052, Australia ); Kamal, Md. Rubayet Ibna (Department of Civil and Environmental Engineering, Islamic University of Technology, Board Bazar, Gazipur 1704, Bangladesh ); Yashin, S.M. (Department of Civil and Environmental Engineering, Islamic University of Technology, Board Bazar, Gazipur 1704, Bangladesh ); Zihan, Zia Uddin Ahmed (Department of Civil and Environmental Engineering, Islamic University of Technology, Board Bazar, Gazipur 1704, Bangladesh );
  • 초록  

    Abstract Effects of maximum aggregate size (12.5mm, 19.0mm, 25.0mm, 37.5mm, and 50.0mm) on properties of concrete made with different sand to total aggregate volume ratio (0.40 and 0.45), W/C ratio (0.45, 0.50, and 0.55), and cement content (375kg/m 3 and 400kg/m 3 ) were investigated. Considering the variables, a total of 552 concrete cylinder specimens of diameter 100mm diameter and height 200mm were made for 52 numbers of independent cases. Brick aggregates were tested for specific gravity, absorption capacity, unit weight, and abrasion resistance. Concrete specimens were tested for compressive strength, stress-strain curve, splitting tensile strength, and Young's modulus. Results have revealed that for higher cement content (400kg/m 3 ), concrete made with small aggregates give more compressive strength. However, for a cement content of 375kg/m 3 , and W/C ratio of 0.45, the compressive strength is increased with an increase in maximum aggregate size up to 37.5mm. The compressive strength of concrete increases with an increase in s/a ratio from 0.40 to 0.45. Relationships between mechanical properties of concrete, and stress-strain relationships are proposed for different maximum aggregate sizes. Highlights Effects of maximum aggregate size (MAS) on brick aggregate concrete was studied. MAS was varied from 12.5 to 50.0mm; cement contents from 375 to 400kg/m 3 . Sand to total aggregate ratio was varied from 0.40 to 0.45; W/C from 0.45 to 0.55. Concrete compressive strength increases for lower MAS for a higher cement content. Compressive strength is increased up to MAS of 35mm for lower cement content.


  • 주제어

    Brick aggregate .   Cement content .   Compressive strength .   Image analysis .   Maximum aggregate size .   Sand to total aggregate volume ratio .   Young's modulus.  

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