Transcription of 302.1R-96 Guide for Concrete Floor and Slab Construction
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302.1R-96 Guide for Concrete Floor and Slab Construction
Quality of a Concrete Floor or slab is highly dependent on achieving ahard and durable surface that is flat, relatively free of cracks, and at theproper grade and elevation. Properties of the surface are determined by themixture proportions and the quality of the concreting and jointing opera-tions. The timing of concreting operations especially finishing and joint-ing is critical. Failure to address this issue can contribute to undesirablecharacteristics in the wearing surface such as cracking, low resistance towear, dusting, scaling, high or low spots, and poor drainage, as well asincreasing the potential for Floor slabs employing portland cement, regardless of slump, willstart to experience a reduction in volume as soon as they are placed. Thisphenomenon will continue as long as any water or heat, or both, is beingreleased to the surroundings. Moreover, since the drying and cooling ratesat the top and bottom of the slab will never be the same, the shrinkage willvary throughout the depth, causing the as-cast shape to be distorted, aswell as reduced in Guide contains recommendations for controlling random cracking andedge curling caused by the Concrete s normal volume change.
CONCRETE FLOOR AND SLAB CONSTRUCTION 302.1R-3 lightweight concrete floors and slabs made with conventional portland and blended cements. The design of …
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