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论文作者:Felix Hugenschmidt论文属性:学术文章 Scholarship Essay登出时间:2014-01-26编辑:anne点击率:5499
论文字数:3614论文编号:org201401252207307326语种:英语 English地区:瑞士价格:$ 22
关键词:EPDXY预制预应力混凝土建筑胶ADHESIVES IN PRECAST PRESTRESSEDCONCRETE CONSTRUCTION
摘要:虽然环氧胶粘剂已使用多年在建筑行业,他们现在正在使用的预制预应力混凝土应用的程度增加。这一点尤其体现在桥梁节段施工。
The epoxy adhesive was applied to adjoining segment surfaces with wood-en spatulas. During this operation the adjoining segments are about 30 to 40 cm (approx. 12 to 16 in.) apart.
In general, only two men are re- quired to apply the epoxy. However, on the Rio-Niteroi job, two men were employed on the deck and four to six men inside the segment. It took about 45 mintes per segment to mix and apply the epoxy (including the in-itial post-tensioning operation). How-ever, on other jobs this time has been some what reduced.
Chillon Viaduct
The other noteworthy project using epoxy bonded segments is Switzerland's Chillon Viaduct, located near the his-toric Chillon Castle. In such a scenic setting it was important to leave the natural environment unscathed. Seg- mental construction proved to be an ideal mode of erection.
Fig. 9 shows a construction man, on a finished deck, manually applying an epoxy adhesive to a new segment as it is gradually lowered into place. On the Chillon job, https://www.51lunwen.org/CivilEngineering/ the mixing and applica-tion of the epoxy (including the initial post-tensioning) took about 30 minutes.
In Fig. 10 the adhesive has been ap-plied to the far side of the segment.
Simultaneously, the tendons and stress-ing equipment are being readied for the initial post-tensioning oper本论文由英语论文网提供整理,提供论文代写,英语论文代写,代写论文,代写英语论文,代写留学生论文,代写英文论文,留学生论文代写相关核心关键词搜索。