کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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5022916 | 1470209 | 2017 | 8 صفحه PDF | دانلود رایگان |
High performance lightweight foamed concrete (HPLWFC) have a structural strength with low density and high flowability. HPLWFC is used in modern concrete technology and extensively in the construction applications of high-rise buildings, long-span concrete structures and road sub-bases among others. This present work investigated the effect of size and shape specimen on the compressive strength of HPLWFC reinforced with glass fibres. Foam agent (organic material) was used to obtain lightweight concrete. The volume fractions of the glass fibres used were: 0.0%, 0.06%, 0.2%, 0.4%, and 0.6% by total volume of concrete. The fresh properties of HPLWFC were measured by flowability and fresh density tests. In this study, the size and shape of specimens used for compressive strength were cubes by size (150Â ÃÂ 150Â ÃÂ 150, 100Â ÃÂ 100Â ÃÂ 100 and 50Â ÃÂ 50Â ÃÂ 50Â mm) and cylinders by size (150Â ÃÂ 300 and 100Â ÃÂ 200Â mm). The results of HPLWFC mixes showed the increase in the compressive strength for all sizes of specimens with glass fibre content. The small size of specimens gave higher compressive strength in comparison with other sizes. The disparity in the compressive strength for two sizes and shapes (cubes and cylinders) were reduced with a rise in the volume fraction of the glass fibres.
Journal: Journal of King Saud University - Engineering Sciences - Volume 29, Issue 4, October 2017, Pages 373-380