Crack formation of different types of thin plates at to an evenly distributed load

Abstract

The formation of cracks in various building structures and elements, and especially in reinforced concrete slabs, is an important criterion that affects their operational properties and the durability of the structure as a whole.The causes of cracking can be diverse, and understanding their occurrence is the key to effective prevention and repair, as well as operation.Here are the main factors affecting the cracking of elements:-insufficient reinforcement;-high temperature effects;-shrinkage of concrete;-overload;-insufficient quality of matrix concrete;-improper execution of construction workduring the production of elements.The study of deflections and, as a result, the formation of cracks, their opening for structures, in particular slabs, is an urgent task in civil engineering, as it allows to evaluate their operational capacity and develop effective methods of increasing their strength and crack resistance.A set of experimental studies was conducted to assess the stress-strain state of slabs with different reinforcement.These studies were conducted in order to compare the performance of slabs with different methods of reinforcement or without it at all, using the example of concrete, reinforced concrete or fiber concrete slabs.The conducted experimental studies confirmed the effectiveness of using steel fibers to increase the strength and durability of reinforced concrete slabs.From the obtained data, it is clear that dispersed reinforcement has a positive effect on the stress-strain state of the slabs. Steel fibers provide increased strength and reduced cracking, while polypropylene fibers are effective in reducing cracking, but less effective in increasing compressive strength. Glass fibers provide intermediate characteristics.Thus, the application of dispersed reinforcement should be based on specific operational requirements and implemented in mass production. The use of dispersed reinforcement will significantly improve the operational properties of reinforced