Journal Cover Challenge Journal of Concrete Research Letters
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  This is an Open Access Journal Open Access journal
   ISSN (Online) 2548-0928
   Published by TULPAR Academic Publishing Homepage  [2 journals]
  • Cover & Contents Vol.8 No.1

    • Authors: Journal Management CJCRL
      PubDate: 2017-04-04
      Issue No: Vol. 8, No. 1 (2017)
       
  • Comparative study on the using of PEG and PAM as curing agents for
           self-curing concrete

    • Authors: Alaa A. Bashandy, Nageh N. Meleka, Mohamed M. Hamad
      Pages: 1 - 10
      Abstract: There are many factors, which may affect on concrete quality. One of those is concrete curing. Self-curing concrete is the solution. It may produce by using chemical curing agents. The concept of those agents is to reduce the water evaporation from concrete. This research aims to study the effect of chemical curing agents on the behavior of self-curing concrete. Two different chemical curing agents were used to study the main mechanical properties of concrete. The main variables are; the type of curing agent (Polyethylene glycol "PEG400"–Poly Acrylamide "PAM") and its dosages. The results obtained in terms of compressive, tensile and flexure strength values. Test results showed that the self-curing concrete cured by each agent performed better in hardened properties compared to none cured concrete. Also, curing using the both agents together perform better than using each one individually.
      PubDate: 2017-04-04
      Issue No: Vol. 8, No. 1 (2017)
       
  • Effect of reinforcement in perforated brick arrangement for determining
           flexural strength and corrosion loss

    • Authors: Mosfeka Mahabuba Akter, Atique Shahariar, Md. Shafiqul Islam
      Pages: 11 - 16
      Abstract: Brick masonry walls consist of the main elements that responsible for the global stability of brick masonry buildings when subjected to lateral loads such as wind and seismic forces. These elements are subjected to gravity forces, bending moments and shear forces due to the horizontal loading. The application of reinforcement increases the deformation capacity, controls the crack opening and allows a better distribution of stresses. Longitudinal reinforcements increase the flexural strength, even if they seem not to influence the shear behavior. Effectiveness of reinforcement on the increase of the resistance of brick masonry wall is highly related to the failure mode of the element. This paper shows the flexural strength of reinforced perforated brick masonry wall and weight loss of reinforcements for corrosion after a certain period of time. Several reinforce bar arrangements into the perforated brick masonry walls show the variety of possible applications.
      PubDate: 2017-04-04
      Issue No: Vol. 8, No. 1 (2017)
       
  • Structural behavior of recycled aggregates concrete filled steel tubular
           columns

    • Authors: Boshra Eltaly, Ahmed Bembawy, Nageh Meleka, Kameel Kandil
      Pages: 17 - 28
      Abstract: This paper presents an experimental and numerical investigation to determine the behavior of steel tubular columns filled with recycled aggregates concrete up to failure under constant axial compression loads. The experimental program included two steel tube columns, four recycled concrete columns and eight composite columns filled with different types of recycled coarse aggregates (granite and ceramic). Different percentages of recycled coarse aggregates: 0, 25 and 50 of the percentage of the coarse aggregates (dolomite) were used. The results of the numerical model that was employed by the finite element program, ANSYS, were compared with the experimental results. The results of the experimental study and the finite element analysis were compared with the design equations using different national building codes: AISC1999, AISC2005 and EC4. The results indicated that the recycled aggregates concrete infill columns have slightly lower but comparable ultimate capacities compared with the specimens filled with normal concrete.
      PubDate: 2017-04-04
      Issue No: Vol. 8, No. 1 (2017)
       
 
 
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