孫家瑛　陳志源　吳初航　陳建祥

  著重研究采用硅灰裹石法對于提高混凝土路用性能的影響。研究結果表明：硅灰裹石摻粉煤灰高性能道路混凝土抗折強度比雙摻硅灰、粉煤灰高強度混凝土提高20%左右，脆度系數降低30%左右，耐磨性提高15%以上。此外，對硅灰裹石法提高混凝土路用性能的機理進行了探討。
關鍵詞：硅灰裹石；路用性能；脆度；耐磨性；抗折強度
中圖分類號：TU528　　文獻標識碼：A　　文章編號：1002-3046(1999)04-17

Influence of Silica Fume Coated Aggregate on Properties of Road
Concrete With Adding Flyash

Sun Jiaying
(Shanghai Municipal Engineering Research Institute,Shanghai 200031)
Chen Zhiyuan
(Tongji University,Shanghai 200092 China)
Wu Chuhang
(Shanghai Municipal Engineering Research Institute,Shanghai 200031)
Chen Jianxiang
(Shanghai Municipal Engineering Research Institute,Shanghai 200031)

Abstract：The effect of coating aggregate surface with silica fume on improving the properties of road concrete is researched in this paper.The results show that the flexural strength of road concrete with coating aggregate surface with silica fume enhances 20%,brittleness coefficient decreases 30% and abrasion resistance increases 15% compared with concrete with adding silica fume.It is discussed and analyzed the mechanism of enhancing the properties of road concrete with silica fume coated aggregate.
Key words：silica fume coated aggregate;properties of road concrete;brittleness;abrasion resisttance;flexural strength▲