Concrete Properties
Plastic Concrete
// Definition
Concrete in its fresh, mouldable state — from mixing until initial set. The window during which placement, compaction, and finishing must occur.
Plastic concrete is sensitive to evaporation and shrinkage. Hot weather and wind shorten the plastic phase, increasing risk of plastic shrinkage cracks.
// Related Indian Standards
IS 456IS 7861
// Cross-references
Setting Time
The time it takes cement paste to lose plasticity and harden. Measured as Initial Set (start of stiffening) and Final Set (no longer deformable).
Initial Set
The point at which cement paste begins to stiffen and lose plasticity. Marks the end of the workable period.
Workability
The ease with which fresh concrete can be mixed, transported, placed, compacted, and finished without segregation.
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