摘要
研究了水泥-粉煤灰复合胶凝材料在等水胶比条件下的化学结合水、水化产物与硬化浆体显微结构,探讨了矿物外加剂C和激发剂D的掺入对水泥-粉煤灰复合胶凝材料体系的影响规律。研究结果表明:矿物外加剂C、激发剂D的加入促进掺粉煤灰的水泥浆体早期的水化速度,改善了水泥石的孔结构,增大了水泥石的密实度,提高了硬化水泥石的早期抗折强度和抗压强度。
The chemical combined water, hydration products and hardened cement paste microstmcture of cement-fly ash composite cementitious material were studied at the same water binder ratio. The effects of mineral admixture C and activator D on cement-fly ash composite cementitious material were also discussed. The research results show that the incorporation of mineral admixture C and activator D accelerate early-age hydration of cement paste with fly ash, improve the pore structure of hardened cement paste, enhance the degree of density of hardened cement paste, increase the early-age flexural strength and compressive strength of hardened cement paste,
出处
《铁道科学与工程学报》
CAS
CSCD
北大核心
2005年第6期76-82,共7页
Journal of Railway Science and Engineering
基金
中国博士后基金资助项目(20040350490)
关键词
粉煤灰
复合胶凝材料
激发剂
水化
早期强度
fly ash
composite cementitious material
activator
hydration
early-age strength
