Low velocity impact response of rc beam with artificial polyethylene aggregate as concrete block infill
In structural design, an ideal situation for saving materials would be to reduce the weight of the structure without having to compromise on its strength and serviceability. A new lightweight composite reinforced concrete section was developed with a novel use of a lightweight concrete block as infi...
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2018
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| الوصول للمادة أونلاين: | http://eprints.uthm.edu.my/209/1/24p%20MOHAMED%20M.%20MUSTAFA.pdf http://eprints.uthm.edu.my/209/2/MOHAMED%20M.%20MUSTAFA%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/209/3/MOHAMED%20M.%20MUSTAFA%20WATERMARK.pdf |
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my-uthm-ep.2092021-07-06T08:26:52Z Low velocity impact response of rc beam with artificial polyethylene aggregate as concrete block infill 2018-01 M. Mustafa, Mohamed TA630-695 Structural engineering (General) In structural design, an ideal situation for saving materials would be to reduce the weight of the structure without having to compromise on its strength and serviceability. A new lightweight composite reinforced concrete section was developed with a novel use of a lightweight concrete block as infill utilizing Artificial Polyethylene Aggregate (APEA and MAPEA). The concrete near the neutral axis acts as a stress transfer medium between the compression and tension zones. Partial replacement of the concrete near the neutral axis could create a reduction in weight and savings in the use of materials. In this experimental work, APEA and MAPEA were utilized as replacement for normal aggregates (NA) at percentages of 0%, 3%, 6%, and 9%, 12%, and 100% in the concrete mix. In this study, the concrete block infill uses the 100% MAPEA as a replacement for coarse aggregate. A total of sixteen beams were prepared measuring 170 mm × 250 mm × 1000 mm, in which four specimens were used as control samples (NRC) and twelve specimens were the reinforced concrete beam incorporated with different size of concrete block infill (RCAI) consisting of 100% MAPEA. All beams were tested with 100 kg steel weight dropped vertically from a height of 0.6 m and 1.54 m, which was equivalent to 3.5 m/s and 5.5 m/s respectively. Based on the experimental results, the impact force, displacement and crack patterns were affected by the impact load. For RCAI specimens, the impact force was larger but smaller displacement value was observed, compared to the NRC specimens. Furthermore, the width of the cracks generated in the RCAI specimens near the mid-span was less than that on the NRC specimen. All experiment results were validated against FEM. The transient impact force histories, displacement and crack patterns obtained from FEM matched reasonably well with the experiment results. The error reported a range of 1% to 15%. The results showed that the proposed use of concrete block infill produced desirable results under the impact loads. The main advantages of the concrete block infill that utilized MAPEA from waste plastic bags due to the weight reduction about 6% in the concrete beams. 2018-01 Thesis http://eprints.uthm.edu.my/209/ http://eprints.uthm.edu.my/209/1/24p%20MOHAMED%20M.%20MUSTAFA.pdf text en public http://eprints.uthm.edu.my/209/2/MOHAMED%20M.%20MUSTAFA%20COPYRIGHT%20DECLARATION.pdf text en staffonly http://eprints.uthm.edu.my/209/3/MOHAMED%20M.%20MUSTAFA%20WATERMARK.pdf text en validuser phd doctoral Universiti Tun Hussein Onn Malaysia Fakulti Kejuruteraan Awam dan Alam Bina |
| institution |
Universiti Tun Hussein Onn Malaysia |
| collection |
UTHM Institutional Repository |
| language |
English English English |
| topic |
TA630-695 Structural engineering (General) |
| spellingShingle |
TA630-695 Structural engineering (General) M. Mustafa, Mohamed Low velocity impact response of rc beam with artificial polyethylene aggregate as concrete block infill |
| description |
In structural design, an ideal situation for saving materials would be to reduce the weight of the structure without having to compromise on its strength and serviceability. A new lightweight composite reinforced concrete section was developed with a novel use of a lightweight concrete block as infill utilizing Artificial Polyethylene Aggregate (APEA and MAPEA). The concrete near the neutral axis acts as a stress transfer medium between the compression and tension zones. Partial replacement of the concrete near the neutral axis could create a reduction in weight and savings in the use of materials. In this experimental work, APEA and MAPEA were utilized as replacement for normal aggregates (NA) at percentages of 0%, 3%, 6%, and 9%, 12%, and 100% in the concrete mix. In this study, the concrete block infill uses the 100% MAPEA as a replacement for coarse aggregate. A total of sixteen beams were prepared measuring 170 mm × 250 mm × 1000 mm, in which four specimens were used as control samples (NRC) and twelve specimens were the reinforced concrete beam incorporated with different size of concrete block infill (RCAI) consisting of 100% MAPEA. All beams were tested with 100 kg steel weight dropped vertically from a height of 0.6 m and 1.54 m, which was equivalent to 3.5 m/s and 5.5 m/s respectively. Based on the experimental results, the impact force, displacement and crack patterns were affected by the impact load. For RCAI specimens, the impact force was larger but smaller displacement value was observed, compared to the NRC specimens. Furthermore, the width of the cracks generated in the RCAI specimens near the mid-span was less than that on the NRC specimen. All experiment results were validated against FEM. The transient impact force histories, displacement and crack patterns obtained from FEM matched reasonably well with the experiment results. The error reported a range of 1% to 15%. The results showed that the proposed use of concrete block infill produced desirable results under the impact loads. The main advantages of the concrete block infill that utilized MAPEA from waste plastic bags due to the weight reduction about 6% in the concrete beams. |
| format |
Thesis |
| qualification_name |
Doctor of Philosophy (PhD.) |
| qualification_level |
Doctorate |
| author |
M. Mustafa, Mohamed |
| author_facet |
M. Mustafa, Mohamed |
| author_sort |
M. Mustafa, Mohamed |
| title |
Low velocity impact response of rc beam with artificial polyethylene aggregate as concrete block infill |
| title_short |
Low velocity impact response of rc beam with artificial polyethylene aggregate as concrete block infill |
| title_full |
Low velocity impact response of rc beam with artificial polyethylene aggregate as concrete block infill |
| title_fullStr |
Low velocity impact response of rc beam with artificial polyethylene aggregate as concrete block infill |
| title_full_unstemmed |
Low velocity impact response of rc beam with artificial polyethylene aggregate as concrete block infill |
| title_sort |
low velocity impact response of rc beam with artificial polyethylene aggregate as concrete block infill |
| granting_institution |
Universiti Tun Hussein Onn Malaysia |
| granting_department |
Fakulti Kejuruteraan Awam dan Alam Bina |
| publishDate |
2018 |
| url |
http://eprints.uthm.edu.my/209/1/24p%20MOHAMED%20M.%20MUSTAFA.pdf http://eprints.uthm.edu.my/209/2/MOHAMED%20M.%20MUSTAFA%20COPYRIGHT%20DECLARATION.pdf http://eprints.uthm.edu.my/209/3/MOHAMED%20M.%20MUSTAFA%20WATERMARK.pdf |
| _version_ |
1747830554507608064 |