کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
258246 | 503615 | 2013 | 14 صفحه PDF | دانلود رایگان |
This paper presents a new type of material that can be used in many construction fields, especially for strengthening beams or bridge girders and retrofitting structural concrete elements. This material is called polyurethane-cement (PUC). The main purpose of using this new material is that it increases the capacity of beams and reduces crack propagation through the concrete. The first case involves a normal reinforced T-beam. The second case involves a control T-beam strengthened with PUC. The third case involves preloading a control T-beam (up to 50 kN), noting the occurrence of cracks (widths not exceeding 0.2 mm), releasing the load, and then strengthening the beam using PUC. The experiments show significant results: an excellent improvement in the loading capacity of around 170% and a crack width reduction of around 58%. FEM analysis results using ABAQUS software showed excellent agreement with experimental results.
► This study present new material of strengthen concrete structure elements.
► New material (PUC) increased loading capacity more than 170%.
► Using the new material reduced cracks width around 58%.
► PUC have excellent mechanical properties and deformation behavior.
► New material has easy to install without any techniques.
Journal: Construction and Building Materials - Volume 40, March 2013, Pages 104–117