Choi So Yeong, Kim Il Sun, Yang Eun Ik
Research Institute for Disaster Prevention, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Korea.
Department of Civil Engineering, Gangneung-Wonju National University, Gangneung, Gangwon 25457, Korea.
Materials (Basel). 2020 Nov 11;13(22):5084. doi: 10.3390/ma13225084.
This study analyzed the fundamental properties of concrete using steel slag, to test its viability as an aggregate material. An experimental investigation into the effect of steel slag as a coarse aggregate, and heavyweight waste glass as a fine aggregate, on the drying shrinkage of concrete was performed. The calculated shrinkage strain was compared to five different shrinkage prediction models, namely, the ACI 209, B3, KCI 2012, EC 2 and GL 2000 model codes, to evaluate their ability to accurately predict shrinkage behavior. From the results, the elastic modulus of concrete increased with the increase in steel slag substitution ratio, however drying shrinkage decreased. The predictive value of the existing prediction model of drying shrinkage differed from the experimental values, and requires correction to improve its accuracy. The B3 model code showed the best prediction results of drying shrinkage.
本研究分析了使用钢渣的混凝土的基本性能，以测试其作为骨料材料的可行性。对钢渣作为粗骨料和重质废玻璃作为细骨料对混凝土干燥收缩的影响进行了试验研究。将计算得到的收缩应变与五个不同的收缩预测模型，即美国混凝土学会（ACI）209、B3、韩国混凝土学会（KCI）2012、欧洲规范（EC）2和GL 2000模型规范进行比较，以评估它们准确预测收缩行为的能力。结果表明，混凝土的弹性模量随钢渣替代率的增加而增加，但干燥收缩减小。现有干燥收缩预测模型的预测值与试验值不同，需要进行修正以提高其准确性。B3模型规范在干燥收缩预测方面显示出最佳结果。
