摘要
为研究粉煤灰对混凝土抗冻临界强度的影响规律,制备了不同预养护时间、抗冻温度粉煤灰掺量的混凝土试验样品,测试其抗冻4 d后60 d抗压强度,分析了粉煤灰掺量对混凝土抗压强度的影响规律,找出了不同粉煤灰掺量混凝土的抗冻临界强度。研究结果表明:粉煤灰混凝土的60d抗压强度随抗冻温度的降低而减小;混凝土保证最终强度的预养护时间随粉煤灰掺量的增大而增长;粉煤灰混凝土的抗冻临界强度随受冻温度的减低而增大。
To study the effect of fly ash to concrete resistant freezing critical strength,concrete test samples with variable curing time and fly ash content were prepared.The 60-day compressive strength of the samples after 4-day freezing was tested.The effect of fly ash content on the compressive strength of concrete was analyzed.The resistant freezing critical strength of concrete with different fly ash content was determined.The results showed that,the 60-day compressive strength of fly ash concrete decreased with the decrease of freezing temperature;the concrete pre-curing time to ensure the final strength increased with the increase of fly ash content;the resistant freezing critical strength of fly ash concrete increased with the decrease of freezing temperature.
作者
陈树新
CHEN Shu-xin(Hebei Port Group City Construction Development Co.,Ltd.,Hebei Qinhuangdao 066000,China)
出处
《当代化工》
CAS
2019年第12期2781-2784,共4页
Contemporary Chemical Industry
关键词
粉煤灰
混凝土
抗冻临界强度
抗压强度
Fly ash
Concrete
Resistant freezing critical strength
Compressive strength
作者简介
陈树新(1966-),男,河北滦县人,高级工程师,研究方向:新材料等。E-mail:linning8270484@126.com。
