MATEC Web Conf.
Volume 146, 20189th International Scientific Conference Building Defects (Building Defects 2017)
|Number of page(s)||8|
|Section||Mechanical and Materials Engineering|
|Published online||22 January 2018|
Cracked reinforced concrete walls of chimneys, silos and cooling towers as result of using formworks
Chair of Civil Engineering, Faculty of Civil Engineering, 50370 Wrocław,Wyspiańskiego 27, Poland
* Corresponding author: email@example.com
There are presented in this paper some problems connected with reinforced concrete shell objects operation in the aggressive environment and built in method of formworks. Reinforced concrete chimneys, cooling towers, silos and other shells were built for decades. Durability of cracked shells are one of the most important parameters during process of designing, construction and exploitation of shells. Some reasons of appearance of horizontal and vertical cracks as temperature, pressure of stored material, live loads e.g. dynamic character of wind, moisture, influence of construction joints, thermal insulation, chemistry active environmental etc. reduce the carrying capacity of the walls. Formworks, as is occurred recently, are the reason for technological joints with leaking connection, imperfections of flexible formworks slabs and as result can initiate cracks. Cracked surface of this constructions causes decreasing capacity and lower the state of reliability. Horizontal, vertical cracks can caused corrosion of concrete and steel bars, decreasing stiffness of contraction, increasing of deflection and carbonation of concrete cover. Local and global imperfactions of concrete shells are increasing according to greater number of cracks...
© The Authors, published by EDP Sciences, 2018
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