摘要
研究了采用磨细二级粉煤灰，同时掺加高效减水剂配制的大流动度（（１８０ ±２０）ｍ ｍ）粉煤灰混凝土的抗碳化性能．试验过程中改变了粉煤灰掺量（０ ～６０％）、水泥和粉煤灰总用量（３００～６００ ｋｇ／ｍ３）、粉煤灰和矿渣粉复掺等试验条件．结果表明：混凝土的抗碳化性能随着粉煤灰掺量的上升而下降；如果掺量控制在一定范围内，混凝土的抗碳化性能可满足工程要求；粉煤灰和矿渣粉的复掺能较大程度地改善粉煤灰混凝土的抗碳化性能．
The carbonation resistance of concrete with high fluidity((180±20)mm)containing type F fly ash and superplastic admixture was tested.The test parameters,for example,fly ash replacement ratio(0～60%),total unit mass of cement and fly ash(300～600 kg/m 3),admixture type(blending granulated blast furnace slag with fly ash),were varied.The carbonation resistance of concrete decreases as the fly ash level increases.If the ratio is limited in a certain range,the carbonation resistance of concrete may satisfy the engineering demand. Fly ash blending with granulated blast furnace slag could improve carbonation resistance of fly ash concrete sharply.
出处
《建筑材料学报》
EI
CAS
CSCD
1999年第4期319-323,共5页
Journal of Building Materials
基金
上海市粉煤灰综合利用科研开发基金
关键词
粉煤灰混凝土
抗碳化
性能
矿渣粉
concrete
fly ash
large ratio of replacement
carbonation resistance
