摘要
将0.1%(质量分数)碳纳米管掺加到微钢纤维-PVA纤维增强水泥砂浆中,以提高其起裂断裂韧度.结果显示:与空白试件相比,在28d龄期时,掺加0.1%碳纳米管的微钢纤维-PVA纤维增强水泥砂浆弹性模量和起裂断裂韧度分别提升了9.05%和21.44%;碳纳米管主要通过桥连作用、网格填充作用增强微钢纤维-PVA纤维增强水泥砂浆的起裂断裂韧度.
A new method to improve the initial fracture toughness of steel fiber（ST）-PVA mortar by adding 0.1%（by mass） carbon nanotubes was presented. Compared with the blank control group, elastic modulus and initial fracture toughness of fiber mortar by carbon nanotubes are enhanced by 9.05% and 21.44% after 28 days, respectively. The mechanism for using carbon nanotubes as a reinforcement in mortar is main- ly based on its bridging and mesh filling effects.
出处
《建筑材料学报》
EI
CAS
CSCD
北大核心
2017年第2期186-190,共5页
Journal of Building Materials
基金
浙江省自然科学基金资助项目(LR16E080001)
关键词
碳纳米管
纤维
砂浆
起裂断裂韧度
carbon nanotube
fiber
mortar
initial fracture toughness
