期刊
CEMENT & CONCRETE COMPOSITES
卷 114, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.cemconcomp.2020.103805
关键词
Hot-pressing; Alkali-activated material; Mineral wool; Impact; Experimental testing; Finite element modeling
资金
- Business Finland in the ERA-MIN 2 Innovation program part of the EU Horizon 2020 program [8904/31/2017]
- Academy of Finland [322085, 329477, 326291]
- EU [713683]
This study evaluates the effects of the manufacturing process and fiber reinforcement on low-velocity impact response of the recently developed PVA fiber-reinforced alkali-activated stone wool composites. To this end, reinforced and unreinforced specimens manufactured by hot-pressing were compared with those oven curing. The results revealed a similar impact response for the hot-pressed composite produced at 120 degrees C for 3 h and its counterpart cured at ambient pressure at 60 degrees C oven for 24 h. Furthermore, fiber reinforcement significantly improves the impact resistance of the hot-pressed composites showing about a 50% increase in peak load and a 40% reduction in penetration compared to the unreinforced materials. In view of the development of the hot-pressed composites and potential applications, accurate predictive models are of extremely importance, hence the material mechanical behavior was here simulated by adopting the concrete damage plasticity model to predict the low-velocity impact response of both unreinforced and reinforced materials and successfully verified for the scaling-up purpose.
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