محاليل
تميل مجموعة أعمال Horse Construction إلى جميع أنحاء العالم وتقدم الخدمات لآلاف العملاء من خلال المنتجات ، والإرشادات الفنية المتخصصة في مجال الإنشاءات ، ونحن نشهد تطور العلامة التجارية الصينية معهم.
It is very effective to reinforce the cracked brick walls with CFRP sheets. The ultimate load of cracked wall strengthened with CFRP is significantly higher than that of unreinforced wall.
The technology of Strengthening Masonry Structure with CFRP has the advantages of high strength, high efficiency, convenient construction, good durability, no increase of weight and volume, wide application and so on. It has a broad application prospect in China. In this paper, the related research on the reinforcement and repair of the cracked brick masonry structure with CFRP is carried out. The test proves that the method can easily and effectively solve the problems of building wall cracks in the buildings that have plagued the society at present.
Test situation
Design and manufacture of 11 specimen
The height width ratio of the specimen is 1: 114, the wall thickness is 240mm, width 1400mm, and height 1000mm. When the specimen is made, the wall is made of MU10 brick and M10 cement mortar, and the upper and lower beams are C30 concrete. The vertical compressive stress is 0 2MPa = 11, and the specimen size is shown in Figure 1.
Reinforcement scheme for test parts
he specimen Wall 22 was cracked. First, the positive load is applied to the wall. When the loading to the cracking load (212kN), the brick wall suddenly cracks (the corresponding cracking displacement is 21 0mm) and forms a slanting crack quickly. As shown in Figure 2, the crack is about 01 25mm at the width of the crack. At this point, some cracks are closed and the width of the crack is about 011. Mm.
Strengthening by carbon fiber reinfroced polymer(CFRP). Double side sticking carbon fiber fabric , the width is 300mm, "X" shape, both upper and lower ends are anchored.
Test result
Wall | f1(Mpa) | f2(Mpa) | Loading direction | Cracking load | Ultimate load | Dehiscence displacemen | Maximum tensile stress of CFRP | ||||
Experimental value | Increase the degree value | Experimental value | Increase the degree value | Experimental value | Increase the degree value | ||||||
Wall 21 | 11164 | 16189 | Average | 224 | - | 224 | - | 3107 | - | ||
Wall 22 | 11164 | 16189 | Positive | - | - | 276 | 2312 | 810 | 16016 | 4323 | 1519 |
Negative | 368 | 6413 | 368 | 6413 | 1114 | 27113 | 3392 | 545 |
Conclusion
In this paper, it is proved that carbon fiber sheet is very effective in strengthening and repairing cracked brick walls. The ultimate load of the cracked wall reinforced by CFRP is obviously higher than that of the unreinforced wall, and the deformation ability of the reinforced wall is obviously improved, and the cracking displacement of the reinforced wall is significantly increased.
The carbon fiber cloth can improve the stress state of the wall through the pull rod mechanism in the truss model, so as to improve the shear capacity of the component.
يمكنك العثور على أي شيء تحتاجه هنا ، ولديك ثقة في تجربة هذه المنتجات ، وسوف تجد الفرق الكبير بعد ذلك.
تستخدم المواد البولیمریة المسلحة بألیاف الکربون في العدید من تطبیقات الهندسة الإنشائیة کتدعیم الأعمده، الکمرات، الجدران، البلاطات و الأسقف في المنشآت و المباني
الثخانة المنخفضة لهذا الایبوکسي المخفف يجعل هذا المنتج قادراً على اختراق سطح الخرسانة في الأنابيب الشعرية وإنشاء رابطة خرسانية قوية جدًا.
لاصق الإيبوكسي متغير الانسيابية هو عبارة عن جزء من مادة لاصقة تشبب بالإيبوكسي ، وهي مادة لاصقة غير قابلة للاهتراء لتدعيم النسيج لأسلوب الاستخدام الجاف ، وراتنج التمهيدي لنظام التطبيقات الرطبة ، ولصق المواد الإنشائية لربط صفائح FRP.