Evaluating performance of large industrial concrete slabs-on-grade: a focus on fiber reinforced concrete and shrinkage compensating concrete

One of the structures that is highly susceptible to cracking is large industrial slabs. This study investigates the response of large industrial concrete slabs under the influence of temperature and shrinkage loads. As a case study, the performance of fiber reinforced concrete (FRC), shrinkage compensating concrete, and normal concrete in 8 in. thick slabs over a 90-day period is evaluated. Utilizing a detailed numerical model in ABAQUS, the study examines crack width and patterns, revealing that FRC slabs show enhanced shrinkage and cracking resistance. The impact of various reinforcement configurations, including top, bottom, and no reinforcement, on cracking behavior is also explored. Results indicate that bottom reinforcement in slabs has a better performance than top reinforcement in mitigating cracking. The study highlights that FRC significantly curtails crack lengths and boosts tensile strength, offering a more effective solution for crack control in industrial slabs subjected to temperature and shrinkage stresses.