27 августа, 2015 
Malyar It is sometimes necessary to enhance the serviceability performance or ultimate load-carrying capacity of certain structural members in existing concrete structures. This might include the control of cracking in reinforced concrete beams and slabs under the action of superimposed loads, or a need to increase the reinforcement due to design deficiencies or construction errors. Increases in ultimate load-carrying capacity may be required due to amendments in the design codes or changes in use of the structure either for a one-off loading or for continuous use.
Conventional techniques for dealing with such situations involve the construction of additional supports, prestressing or the enlargement of structural members. In the latter case this may involve the bonding of new concrete to old. An alternative solution is to use mild steel plates bonded by an adhesive to the external surface of the concrete member in question. These two techniques will now be discussed in turn.
Опубликовано в рубрике 