How does SFRC slabs affect joint detailing?
The use of steel fibres generally permits wider joint spacing. Construction joints still require dowel bars to form adequate connections which is similar to conventional design; contraction joints are typically saw-cut joints at minimum depth of 1/3 slab thickness. Also depending on the shrinkable characteristic of concrete and the quality of sub-base preparation, joints are usually spaced at 6 to 12m centres and are always arranged to coincide with columns or other intrusions. “Jointless” floor is a relatively new and popular SFRC slab-on-ground concept that adored by most owners recently. This is due to the fact that it is aesthetically pleasant and requires less future maintenance. “Jointless” floor is usually more heavily reinforced, that means minimum required dosage is 30kg/m3 and thus it can be built as large as 45mx45m panel without a single joint. The length-to-width ratio of the panel should also be kept within the maximum value of 1.5:1. There is normally a compromise betwee
