Ferrocement roofing element II / Jens Overgaard
โดย: Overgaard, Jens
ผู้แต่งร่วม: Sukapaddhanadhi, Narong | ณรงค์ สุขพัฒน์ธี | Thailand Institute of Scientific and Technological Research
Language: English ชื่อชุด: Res. Proj. no. 21/17 ; Rep. no. 2ข้อมูลการพิมพ์: Bangkok : Thailand Institute of Scientific and Technological Research, 1973 รายละเอียดตัวเล่ม: 12 p.หัวเรื่อง: Construction materials | Ferrocement | Roofing materialsสารสนเทศออนไลน์: Click here to access full-text สาระสังเขป: Due to the simplicity of the reinforcement it was not necessary to tie it together before placing in the mould. Mesh and longitudinal bars could be placed directly in the mould and they were only tied where the mesh was not flat enough to fit to the sides of the mould. Bars were held in place by stretching and fastening them at each end of the mould. In comparison with previous experience this technique proved considerably easier. Also the plastering was greatly facilitated by the more open reinforcement in this element. It took only one fifth of the time that was spent on plastering the previous element which was more heavily reinforced. This meant that the whole 7.30 x 1.20 m element could be plastered in one operation, thus avoiding cold joints. As in the previous test a vibrating trowel was used. This seems essential for a good compaction.สาระสังเขป: In extension of the previous test on ferrocement roofing, another element was made in the same mould but only 18 mm thick and without transverse reinforcement bars. The wire mesh reinforcement which is the most costly item of the material components was reduced to 3 layers only. This was done to reduce the cost of materials as well as labour inputs.สาระสังเขป: The element was exposed to a load test after 21 days curing under wet gunny bags, and it collapsed due to lacking stability of the sides at midspan. The load at the critical load was equivalent to an evenly distributed pay-load of 360 kg/m on a 7.00 m span. Related to the requirements of the building practice in Thailand of 50 kg/m this means the factor of safty was 7. Authors
| ชนิดของทรัพยากร | Location | Call number | สถานะ | Last seen | Copy No. | บาร์โค้ด |
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วว. เทคโนธานี | Available | 2018-08-31 | 1 | RP1973/339 | |
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วว. เทคโนธานี | Available | 2018-08-31 | 2 | RP1973/339-2 |
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