摘要
文章以水利工程高性能混凝土(HPC)为例,探讨了其抗冻性和抗氯离子渗透性受矿渣粉、粉煤灰不同掺入方式的影响。结果表明:水胶比相同的情况下,HPC抗压强度随矿物掺合料掺量的增大而逐渐减小;适量的掺入矿物掺合料有利于改善HPC的抗氯离子渗透性能,降低电通量;矿渣粉与粉煤灰复掺质量比为1∶3且矿物掺合料掺量为30%时,28d、84d的HPC电通量达到370.2C和625.7C;含气量及水胶比不变的条件下,HPC的抗冻性随矿物掺合料掺量的增加逐渐变差,未掺矿物掺合料的HPC抗冻等级达到F200,其抗冻性最好。
Taking high performance concrete(HPC)of hydraulic engineering as an example,the effects of different mixing methods of slag powder and fly ash on its frost resistance and chloride ion permeability resistance are discussed in this paper.The results show that the compressive strength of HPC decreases with the increase of mineral admixture content when the water-binder ratio is the same;appropriate mineral admixture can improve the chloride penetration resistance of HPC and reduce the electric flux;when the mass ratio of slag powder to fly ash is 1∶3 and the mineral admixture content is 30%,the HPC electric flux of 28d and 84d reaches 370.2c and 625.7C;under the condition of constant gas content and water-binder ratio,the frost resistance of HPC becomes worse with the increase of mineral admixture content.The frost resistance of HPC without mineral admixture reaches F200,and its frost resistance is the best.
作者
陈广华
CHEN Guang-hua(Chaoyang County Water Conservancy Investigation and Design Group, Chaoyang 122000, China)
出处
《黑龙江水利科技》
2022年第1期55-59,共5页
Heilongjiang Hydraulic Science and Technology
关键词
高性能混凝土
矿物掺合料
耐久性
影响分析
high performance concrete
mineral admixtures
durability
impact analysis
