矿物超细粉混合骨料混凝土抗冻性能试验研究  

Experimental Study on Frost Resistance Properties of Mixed Aggregate Concrete with Mineral Admixture

作　　者：霍俊芳[1] 李伟玲[1] 宋的添[1] 李金帅 

机构地区：[1]内蒙古工业大学土木工程学院,呼和浩特010051 [2]呼铁局科研所,呼和浩特010018

出　　处：《内蒙古工业大学学报（自然科学版）》2012年第3期47-51,共5页Journal of Inner Mongolia University of Technology：Natural Science Edition

基　　金：内蒙古自治区自然科学基金资助项目(2011BS0707);"十二五"国家科技支撑计划项目(2012BAJ20B04-07)

摘　　要：将天然浮石与碎石作为粗骨料,配制混合骨料混凝土。在混合骨料混凝土中单掺30%粉煤灰及20%粉煤灰分别与10%石粉、10%矿粉、10%硅粉复掺,对比其抗压性能及抗冻性能。试验结果表明:粉煤灰与硅粉复掺的混合骨料混凝土28d立方体抗压强度最高,粉煤灰与矿粉复掺次之,粉煤灰与石粉复掺较低,单掺粉煤灰最低。对于混合骨料混凝土的抗冻性能,粉煤灰与硅粉复掺最高,与矿粉复掺次之,单掺粉煤灰较低,粉煤灰与石粉复掺最低。掺加矿物掺合料的混合骨料混凝土的抗压性能和抗冻性能均比基准混凝土差。When mixed aggregate concrete is prepared, natural pumice and gravel are mixed in as the coarse aggregate, while 30% fly ash is added singly and 20% fly ash with 10% limestone powder, 10% pulverized slag and 10% silica fume respectively. Compression performance and frost resistance of mixed aggregate concrete are compared. Test results indicate that： mixed aggregate concrete containing fly ash and silica fume has the highest 28d cube compressive strength, followed by fly ash mixed with pulverized slag, and then with limestone powder, fly ash alone the lowest. To frost resistance, fly ash mixed with silica fume is the highest, followed by fly ash with pulverized slag, then fly ash alone, fly ash with limestone powder the lowest. Reference concrete is better than mixed aggregate concrete with mineral admixture on compressive performance and frost resistance.

关 键 词：混合骨料混凝土 粉煤灰 石粉 矿粉 硅粉 抗压性能 抗冻性能 

分 类 号：TU528[建筑科学—建筑技术科学]