一种高抗冻剂对于混凝土抗冻性能的影响  

Effect of a high antifreeze agent on the frost resistance of concrete

作　　者：彭龙贵[1] 郝方涛 程焕全 张亮青 叶瑞瑞 丁治玉 陈姝杉 PENG Longgui;HAO Fangtao;CHENG Huanquan;ZHANG Liangqing;YE Ruirui;DING Zhiyu;CHEN Shushan(School of Materials Science and Engineering,Xi′an University of Science and Technology,Xi′an 710054,China)

机构地区：[1]西安科技大学材料科学与工程学院,陕西西安710054

出　　处：《混凝土》2024年第9期85-88,93,共5页Concrete

基　　金：国家重点研发计划(2020YFC1910205)。

摘　　要：主要研究了一种高抗冻剂相较于引气剂对混凝土的抗冻融性能的影响。结果表明:相较于在混凝土加入引气剂,加入高抗冻剂对混凝土的抗冻性能的提升作用更加显著,尤其是在强度等级为C30的混凝土中,在300次冻融循环后,相较于加入引气剂的试样,弹模比从57.3%提升至87.4%。并且在300次冻融循环后,加入高抗冻剂相较于加入引气剂的试样,弹模比从61.4%提升到90.5%。而在C40强度组中,300次冻融循环之后,加入高抗冻剂试样相较于加入引气剂的试样,其弹模比从61.4%提升至90.5%。可以看出高抗剂对C30、C40强度等级试样的抗冻性有巨大的提升。并且加入高抗冻剂的C30、C40、C50试样在28 d抗压强度分别为39.9 MPa、48.2 MPa、56.9 MPa,均满足国标GB/T 50107-2010《混凝土强度检验评定标准》中对C30、C40、C50强度等级的要求。The effect of a high antifreeze agent on the freeze-thaw resistance of concrete compared with the aerophetic agent was mainly studied.The results show that compared with the addition of an inducing agent to concrete,the addition of high antifreeze agent has a more significant effect on the antifreeze performance of concrete,especially in concrete with strength grade C30,after 300 freeze-thaw cycles,compared with the sample with inducer,the elastic mold ratio is increased from 57.3%to 87.4%.And after 300 freeze-thaw cycles,the addition of high antifreeze increased from 61.4%to 90.5%compared with the addition of an introducing agent.In the C40 strength group,after 300 freeze-thaw cycles,the elastic mold ratio of the highly antifreeze sample was increased from 61.4%to 90.5%compared with the sample with the addition of the introducing agent.It can be seen that the high resistance agent has greatly improved the frost resistance of C30 and C40 strength grade specimens.And add high antifreeze C30,C40,C50 specimens in 28 d.The compressive strength is 39.9 MPa,48.2 MPa and 56.9 MPa respectively,which meet the requirements of the national standard GB/T 50107—2010“Concrete Strength Inspection and Evaluation Standards”for C30,C40 and C50 strength grades.

关 键 词：高抗冻剂 引气剂 混凝土抗冻融性能 弹性模量 抗压强度 

分 类 号：TU528.042.6[建筑科学—建筑技术科学]