15 Rebar placed too close to the sides can corrode and swell causing concrete to crack and flake off. Rod placement with welded mats is consistent and exact. Rebar placed too close to side can corrode causing concrete to crack and flake off. Rod placement with welded mats is consistent and exact. Improper placement of reinforcing rods is a common cause of premature slat and beam damage. Individual rods placed too close to the side of a slat or beam can cause the rods to swell bursting or cracking the concrete. Hog Slat uses pre-welded steel mats to assure correct rod placement in each gang slat produced. After casting, Hog Slat steam cures slats in climate-controlled tents. Steam provides the heat necessary for accelerated curing and the moisture to prevent stress cracks and shrinkage. In only a few hours, we can harden slats that exceed 28-day strengths of typically cured concrete. Hot, dry weather or cold, wet conditions don’t affect the quality of the slats delivered to your farm. It is important proper steam curing procedures are followed to ensure long-term durability of the slats. The rate of temperature gain and the maximum temperature in the curing chamber must be controlled and monitored using accepted industry guidelines and practices. Failure to do this can result in a shortened lifespan of the concrete slats due to delayed ettringite formation (DEF), a condition that leads to early deterioration of the concrete when exposed to an environment similar to that found in a hog barn.
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