000012684 001__ 12684
000012684 005__ 20160920162637.0
000012684 04107 $$aeng
000012684 046__ $$k2016-09-05
000012684 100__ $$aMaj, M.
000012684 24500 $$aShells of cracked reinforced concrete chimneys, silos and cooling towers walls as a problem of durability exploitation

000012684 24630 $$n6.$$pInsights and Innovations in Structural Engineering, Mechanics and Computation
000012684 260__ $$bTaylor and Francis Group, London, UK
000012684 506__ $$arestricted
000012684 520__ $$2eng$$aThere are presented in this paper some problems connected with reinforced concrete shell objects operation in the aggressive environment. Reinforced concrete chimneys, cool towers, silos and other shells were built for decades. Vitality i.e. 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.wind, dynamic character of wind, moisture, influence of construction joints, thermal insulation, chemistry active environmental etc. reduce the carrying capacity of the walls of the chimneys, silos, cool towers etc. Cracked surface of this constructions causes decreasing capacity and lower the state of reliability. Horizontal and vertical cracks can caused corrosion of concrete and steel bars, decreasing stiffness of contraction, bigger deflection, decreasing of carbonation of concrete cover. Horizontal and vertical cracks allow condensate water infiltrates into wall. It causes corrosion and dank of concrete wall and during winter time cracks become bigger because if glaciations water in cracks. Local and global imperfactions of concrete shells are increasing according to greater number of cracks. Taking into account these facts, cracks reduce the service life of reinforced concrete buildings. The technology of repairing cracked walls are presented in paper.

000012684 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012684 653__ $$a

000012684 7112_ $$aSixth International Conference on Structural Engineering, Mechanics and Computation$$cCape Town, South Africa$$d2016-09-05 / 2016-09-07$$gSEMC2016
000012684 720__ $$aMaj, M.
000012684 8560_ $$ffischerc@itam.cas.cz
000012684 8564_ $$s3236804$$uhttps://invenio.itam.cas.cz/record/12684/files/132.pdf$$yOriginal version of the author's contribution as presented on CD, 132.pdf.
000012684 962__ $$r12552
000012684 980__ $$aPAPER