repair_and_renovation_0423_eng

CONCRETE SURFACES photograph section - common problems In most buildings-structures made out of concrete and brick, there are almost always some exposed concrete surfaces in facades and balcony floors (underside), walls, the rooftop, and more. Direct exposure of concrete to environmental conditions, especially when there hasn’t been some provision for protection against moisture and sulfites or other environmental pollutants, leads to gradual degradation (deterioration and carbonation) as well as corrosion of the steel reinforcement (rebars) that is embedded in the mass of the concrete. There are also cases where concrete structures, although lined (e.g., with plaster), are affected by moisture that found its way, to the concrete and/or even eroded its reinforcement. Early detection and immediate restoration of the potential damage to all reinforced concrete elements are vital especially when these elements are part of the load bearing structure of the building, and in that capacity, may affect the structural integrity as well. The sole purpose of the relevant photographs listed in this section is to help in the direction of early detection. Solution 1.8 (p. 114) Solution 4.5 (p. 128) Solution 5.3 (p. 133) Solution 5.5 (p. 134) Solution 1.8 (p. 114) Solution 5.8 (p. 135) Solution 4.6 (p. 129) Solution 4.12 (p. 130) Repair & Renovation Guide 35 Solution 1.8 (p. 114)

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