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Some of the advantages of using Self-Consolidating Concrete are: 1. Improved uniformity of in-place concrete by eliminating variable operator-related effort of consolidation. SCC can be placed at a faster rate with no mechanical vibration and less screeding, resulting in savings in placement costs. Improved and more uniform architectural surface finish with little to no remedial surface work. Ease of filling restricted sections and hard-to-reach areas. Labor savings Easier placement over any distance or constraints Accelerated project schedules Reduced noise, safety, and environmental concerns Reduced equipment wear Fast placement without vibration or mechanical consolidation SCC will improve your bottom line, especially when high strength is an existing prerequisite.Labor and time are driving up costs for concrete producers and contractors.However it is laborious and takes time to remove by vibration, and improper or inadequate vibration can lead to undetected problems later.
Once poured, SCC is usually similar to standard concrete in terms of its setting and curing time (gaining strength), and strength.
SCC does not use a high proportion of water to become fluid - in fact SCC may contain less water than standard concretes.
Instead, SCC gains its fluid properties from an unusually high proportion of fine aggregate, such as sand (typically 50%), combined with superplasticizers (additives that ensure particles disperse and do not settle in the fluid mix) and viscosity-enhancing admixtures (VEA).
Ordinarily, concrete is a dense, vicous material when mixed, and when used in construction, requires the use of vibration or other techniques (known as compaction) to remove air bubbles (cavitation), and honeycomb-like holes, especially at the surfaces, where air has been trapped during pouring.
This kind of air content (unlike that in aerated concrete) is not desired and weakens the concrete if left.