文章摘要
何平,许晨曦,洪磊,张强.回收风机叶片玻璃纤维对混凝土力学性能的影响[J].安徽建筑大学学报,2024,32(6):51-57,75
回收风机叶片玻璃纤维对混凝土力学性能的影响
Effect of Recycled Wind Turbine Blade Glass Fibers on the Mechanical Properties of Concrete
  
DOI:
中文关键词: 废旧风机叶片  回收利用  玻璃纤维  混凝土  力学性能
英文关键词: waste wind turbine blade  recycling  glass fiber  concrete  mechanical properties
基金项目:国家自然科学基金项目(51877001)
作者单位
何平 安徽建筑大学 机械与电气工程学院安徽 合肥 230601安徽建筑大学 建筑机械故障诊断与预警技术实验室安徽 合肥 230601 
许晨曦 安徽建筑大学 机械与电气工程学院安徽 合肥 230601 
洪磊 安徽建筑大学 机械与电气工程学院安徽 合肥 230601 
张强 安徽建筑大学 机械与电气工程学院安徽 合肥 230601 
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中文摘要:
      对废旧风机叶片进行机械法回收,经切割破碎筛选后得到不同长度(5 mm、10 mm、15 mm)的玻璃纤维,分别以不同的体积掺量(0.2%、0.4%、0.6%)掺入混凝土中,制备再生玻璃纤维混凝土试样。养护28 d后测试玻璃纤维混凝土的力学性能,并结合扫描电镜(SEM)分析掺入回收玻璃纤维的混凝土微观结构变化特点,通过3D曲面图分析玻璃纤维长度和掺量两因素对混凝土力学性能的影响。结果表明:当混凝土中掺入0.2%长度为5 mm的玻璃纤维,抗压强度达到最优,但随着玻璃纤维长度和掺量进一步增加,抗压强度呈下降趋势。混凝土劈裂抗拉强度和抗折强度随玻璃纤维长度和掺量的增加而提高。当掺入0.6%长度为15 mm的玻璃纤维时,劈裂抗拉强度和抗折强度达到最佳,相比于不掺玻璃纤维混凝土,劈裂抗拉强度和抗折强度分别提高了8.6%和11.1%。
英文摘要:
      Using mechanical recycling to dispose waste wind turbine blades. Through cutting, crushing, and screening to differentlengths (5 mm, 10 mm, 15 mm) of glass fibers are obtained and incorporated into concrete at various volume fractions (0.2%, 0.4%,0.6%) for recycled glass fiber-reinforced concrete samples. With 28-day curing, the mechanical properties of the glass fiber-reinforcedconcrete are tested, and the micro-structural changes of the concrete are analyzed using Scanning Electron Microscopy (SEM). The 3Dsurface plot is used to visually analyze the impact of the fiber length and volume fraction on the mechanical properties of the concrete.The results indicate that the concrete has better compressive strength with 0.2% 5 mm glass fibers. However, as the length and volumefraction of the glass fibers increase further, the compressive strength tends to decrease. The splitting tensile strength and flexuralstrength of the concrete are positively correlated with the length and volume fraction of the glass fibers. When 0.6% 15 mm glass fibersare incorporated, the splitting tensile strength and flexural strength are at their best, which increasing 8.6% and 11.1%, respectively,compared to concrete without glass fibers.
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