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钢筋混凝土结构加固改造技?/h1>

来源?span>http://www.alephi.com/news/11.html  更新时间?017-03-17
碳纤维布加固技术是利用碳素纤维布和专用结构胶对建筑构件进行加固处理,该技术采用的碳素纤维布强度是普通二级钢?0倍左右。具有强度高、重量轻、耐腐蚀性和耐久性强等优点。厚度仅?mm左右,基本上不增加构件截面,能保证碳素纤维布与原构件共同工作?br /> Carbon fiber cloth reinforcement technology is the use of carbon fiber cloth and special structural adhesive to strengthen the construction of the components, the use of carbon fiber cloth technology strength is about 10 times the ordinary steel grade two. It has the advantages of high strength, light weight, corrosion resistance and durability. The thickness is only about 2mm, and the cross section of the component is not increased, so that the carbon fiber cloth can work together with the original component.
1、碳纤维先容
1, carbon fiber introduction
碳纤维根据原料及生产方式的不同,主要分为聚丙烯腈(PAN)基碳纤维及沥青基碳纤维。碳纤维产品包括PAN基碳纤维(高强度型)及沥青基碳纤维(高弹性型)?br /> According to the different raw materials and production methods, carbon fiber can be divided into polyacrylonitrile (PAN) - based carbon fiber and pitch - based carbon fiber. Carbon fiber products include PAN based carbon fiber (high strength) and pitch based carbon fiber (high elasticity).
2、环氧树?br /> 2, epoxy resin
不同类型的树脂还可以保证其对砼具有良好的渗透作用,例如底涂树脂;以及对碳纤维片与砼结构的粘接作用,例如环氧粘结树脂等?br />

Different types of resin can also be used to ensure that they have a good penetration of concrete, such as the bottom coating resin; as well as the carbon fiber sheet and concrete structure of the bonding effect, such as epoxy resin, etc

山东钢筋混凝土静力切? width=

?)环氧树脂简?br /> (1) epoxy resin profile
仅仅依靠碳纤维片本身并不能充分发挥其强大的力学特性及优越的耐久性能,只有通过环氧树脂将碳纤维片粘附于钢筋混凝土结构表面并与之紧密地结合在一起形成整体共同工作,才能达到补强的目的。因此,环氧树脂的性能是重要的关键之一。环氧树脂因类型不同而有不同的性能,适应于各个部位的不同要求?br /> Only rely on the carbon fiber sheet itself does not give full play to its strong mechanical properties and excellent durability, only the carbon fiber sheet is adhered to the surface of reinforced concrete structure and closely together composed by epoxy resin, in order to achieve the purpose of reinforcement. Therefore, the performance of epoxy resin is one of the important key. Epoxy resins have different properties because of different types.
?)物理性能
(2) physical properties
碳纤维片工法中使用了底涂、腻子、浸渗粘着树脂等三种环氧树脂。上述三种环氧树脂的使用目的各不相同,其物性标准也不相同?br /> Three kinds of epoxy resins are used in the carbon fiber sheet, such as bottom coating, putty and impregnating adhesive resin. The purpose of the above three kinds of epoxy resins are different, and their physical properties are not the same.
①底涂:粘着强度
Primer: adhesion strength
底涂必须确实具有把作用在混凝土表面上的荷载传递到碳纤维片上的力学性能。因此粘着强度成为制定其物性标准的重要依据?br /> The primer must have the mechanical properties of the load on the concrete surface to the carbon fiber sheet. Therefore, the adhesive strength is the important basis for the establishment of its physical properties.
②腻子:压缩强度·压缩弹性率
Putty: compression strength and compression elasticity
腻子用于填充混凝土上的微小缺损部分。因此,要求必须具有与混凝土同等以上的压缩强度。此外,还要求具有较高的压缩弹性模量。根据以上理由,制定腻子的物性标准时主要根据其压缩强度及压缩弹性模量?br /> The putty is used to fill the small defects on the concrete. Therefore, it is necessary to have the same compressive strength as concrete. In addition, it is also required to have a higher compressive modulus of elasticity. According to the above reasons, the formulation of the physical properties of the putty is mainly based on its compressive strength and compressive modulus of elasticity.
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