This paper aims to highlight the effect of geogrid materials on the drying shrinkage of concrete including normal strength concrete, high strength concrete, self-compacting concrete, reactive powder concrete and geopolymer concrete (NHSRG concrete). The experimental results obtained from testing NHSRG concrete prism specimens having the dimensions of 75 mm × 75 mm × 280 mm under ambient conditions were adopted in this study. The NHSRG concrete prism specimens were either reinforced with one layer or two layers of geogrid materials. The biaxial and triaxial opening shapes of the geogrid materials were used as a drying shrinkage-reducing material. The duration of testing time of the drying shrinkage was till the age of 102 days. In this paper, the ratio of water to binder (w/b), the presence of coarse aggregates and the rate of formation of drying shrinkage were taken as study parameters. Test results indicated that the effect of geogrid materials in reducing the drying shrinkage of NHSRG concrete increases with the increase in the water to binder ratio. A regular effect for the geogrid materials in reducing the drying shrinkage was observed for the concrete prepared without using coarse aggregates.

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Effect of Geogrid Materials on the Drying Shrinkage of Concrete

  • Abbas S. A. Al-Hedad,
  • Muhammad N. S. Hadi

摘要

This paper aims to highlight the effect of geogrid materials on the drying shrinkage of concrete including normal strength concrete, high strength concrete, self-compacting concrete, reactive powder concrete and geopolymer concrete (NHSRG concrete). The experimental results obtained from testing NHSRG concrete prism specimens having the dimensions of 75 mm × 75 mm × 280 mm under ambient conditions were adopted in this study. The NHSRG concrete prism specimens were either reinforced with one layer or two layers of geogrid materials. The biaxial and triaxial opening shapes of the geogrid materials were used as a drying shrinkage-reducing material. The duration of testing time of the drying shrinkage was till the age of 102 days. In this paper, the ratio of water to binder (w/b), the presence of coarse aggregates and the rate of formation of drying shrinkage were taken as study parameters. Test results indicated that the effect of geogrid materials in reducing the drying shrinkage of NHSRG concrete increases with the increase in the water to binder ratio. A regular effect for the geogrid materials in reducing the drying shrinkage was observed for the concrete prepared without using coarse aggregates.