Experience with supplying SCC

Quality control of mix design, production and delivery techniques

Testing a new technology in area of construction is always a challenge. Self-compacting concrete technology is not an exception. It offers a set of brand new features, which, when fully recognized and properly utilized, deliver a bunch of benefits and advantages. Self-Compacting Concrete technology is steadily growing in New Zealand, but still going through a number of major obstacles. Lack of experience in the areas of the supply and use of SCC are some of them. Every truck delivering SCC and every project add to the experience and build the confidence. The project described in this article was a remarkable learning experience for both the SCC supplier and the building contractor. Different casting techniques were used during the project, that is, pumping SCC at different rates from top and bottom of the formworks. Six-month continuation of the project has taken it through seasonal changes, which had a significant effect on fresh SCC performance on site. This required some modifications to the SCC mix design, SCC transportation and casting processes.

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