摘要
通过对陶粒混凝土进行的超声波检测和立方体抗压试验,研究了混凝土立方体抗压强度和超声波波速之间的关系,以及不同种类、浓度、腐蚀时间的盐溶液浸泡腐蚀与干湿循环等因素对陶粒混凝土波速以及强度的影响规律。试验结果表明,混凝土的抗压强度与波速具有较好的正相关性;掺入白泥可以提高陶粒混凝土的强度;干湿循环对硫酸盐的腐蚀具有促进作用,对氯盐和混合盐的腐蚀有抑制作用;氯盐和硫酸盐浸泡腐蚀使混凝土超声波波速呈现先下降再回升,最后趋于稳定的趋势,其中初期分别最多下降了6.48%和3.36%,可以推测混凝土的强度也有类似规律。
Through ultrasonic testing and cube compressive tests of ceramsite concrete,the relationship between the compressive strength of concrete cubes and ultrasonic wave velocity,as well as the influence of factors such as salt solution immersion corrosion and dry-wet cycle of different types,concentrations,and corrosion times,were studied.The influence law of ceramsite concrete wave speed and strength.The test results show that the compressive strength of concrete has a good positive correlation with the wave speed;the addition of white clay can increase the strength of ceramsite concrete;the dry-wet cycle has a promoting effect on the corrosion of sulfate,and it has a positive effect on the corrosion of chloride and mixed salts.Corrosion has an inhibitory effect;chloride and sulfate immersion corrosion causes the ultrasonic wave speed of concrete to first decrease and then rise,and finally tend to stabilize.The initial decline is up to 6.48%and 3.36%,respectively.It can be inferred that the strength of concrete has similar laws.
作者
祁泽昊
王庆华
关力维
QI Zehao;WANG Qinghua;GUAN Liwei(Construction Engineering College of Jilin University,Changchun 130026,China;Shanghai Institute of Geological Engineering Exploration(Shanghai Hydrogeological Engineering Geology Team),Shanghai 200072,China;Shanghai Development Research Center of Shallow Geothermal Energy,Shanghai 200072,China;Shanghai Engineering and Technology Research Center of Shallow Geothermal Energy,Shanghai 200072,China;China Resources Land(Changchun)Limited,Changchun 130000,China)
出处
《建筑结构》
CSCD
北大核心
2020年第S02期524-528,共5页
Building Structure
关键词
陶粒混凝土
造纸白泥
超声波波速
耐盐蚀性能
ceramsite concrete
papermaking mud
ultrasonic pulse velocity
salt erosion resistance
