Self consolidating concrete spread test
Retention of flowability of SCC at the point of discharge at the jobsite is an important issue.
Hot weather, long haul distances and delays on the jobsite can result in the reduction of flowability whereby the benefits of using SCC are reduced.
Labor Savings Shorter construction periods and resulting cost savings.
Quicker concrete truck turn-around times enabling the producer to service the project more efficiently.
Some of the advantages of using SCC are: Can be placed at a faster rate with no mechanical vibration and less screeding, resulting in savings in placement costs.
Admixtures that affect the viscosity of the mixture are especially helpful when grading of available aggregate sources cannot be optimized for cohesive mixtures or with large source variations.Job site water addition to SCC may not always yield the expected increase in flowability and could cause stability problems Full capacity mixer truck loads may not be feasible with SCCs of very high flowability due to potential spillage.In such situations it is prudent to transport SCC at a lower flowability and adjust the mixture with HRWR admixtures at the job site.Reduction or elimination of vibrator noise potentially increasing construction hours in urban areas.Minimizes movement of ready mixed trucks and pumps during placement.
Ease of filling restricted sections and hard-to-reach areas.