摘要
研究了混凝土中界面改性对混凝土路用性能的影响 ,结果表明 :硅灰裹石掺掺合料法可使水泥石 集料界面粘结强度大幅度提高 ,而水泥石结构致密程度则适当降低 ,从而使混凝土细观结构达到平衡状态 ;抗折强度比双掺硅灰、粉煤灰的高强混凝土提高 1 0 %左右 ,脆度系数降低 3 5% ,耐磨性提高 1 5%以上 .
The effect of the modification of interfacial structure on road properties of concrete was studied. The results showed that the concrete in which the aggregate is enveloped by silica fume and admixing admixtures (SF and/or FA) are mixed in cement paste, can enhance the interracial bond splitting strength greatly, while the densification of bulk paste is somewhat reduced. It makes the microstructure of concrete homogenize. The flexural strength of concrete by enveloping silica fume and admixing admixture on aggregate can be increased by 10%, brittleness coefficient can be decreased by 35% and abrasion resistance can be enhanced above 15%.
出处
《建筑材料学报》
EI
CAS
CSCD
2001年第4期351-355,共5页
Journal of Building Materials
关键词
界面粘结强度
水泥混凝土
脆度
道路工程
抗折强度
耐磨
interfacial bond strength
road properties
brittleness
flexural strength
abrasion resistance
