摘要
采用超量取代法向再生混凝土中掺加粉煤灰,粉煤灰再生混凝土龄期90d强度与普通再生混凝土龄期28 d强度进行比较,得出随着粉煤灰、再生骨料掺量的增加,粉煤灰再生混凝土的抗压强度、劈拉强度稍有减小。随着引气减水剂掺量的增加粉煤灰再生混凝土的抗压强度、劈拉强度均呈减小趋势。
By replacing a part of cement with fly ash with the method of excessive replacement method,the new specimens for a period of 90 days were compared with normal recycled concrete for a period of 28 days.The results showed that with the increase of mixing amount of fly ash and recycled aggregate,the compressive strength and splitting tensile strength of new specimens decrease slightly.With the increase of mixing amount of air-leading water-reducing agent,both of the compressive strength splitting tensile strength of new specimens show decreasing trend.
出处
《混凝土》
CAS
CSCD
北大核心
2010年第8期84-87,共4页
Concrete
基金
国家自然科学基金重点项目(50779018)
河南省科技厅科技攻关资助(102102210096)
郑州市科技攻关资助(0910SGYG23261-2)
关键词
再生骨料
粉煤灰
强度
recycled concrete
fly ash
strength
