Tag Archive for Tag: crack

Tag: crack Drying shrinkage cracking

Long-term drying shrinkage cracks are formed when drying shrinkage is restrained and typical locations are thin slabs and walls, as illustrated in Fig. 3.19. The main causes of shrinkage cracking are inefficient or insufficient joints, inadequate reinforcement, poor curing and too high a water content in the original concrete mix. Remedies are to address those causes at the design stage

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Tag: crack External restraint

It may be possible to avoid external restraint by the provision of movement joints, but in most structures it is necessary to cast subsequent pours against hardened concrete in order to satisfy the requirements of continuity in the structural design. The risk of thermal cracking is particularly great in canti- levered retaining walls for reservoirs, basements, bridge abutments, etc. When

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