试件制备方式对混凝土抗氯离子渗透性能的影响  

The Influence of Specimen Preparation Method on the Chloride Ion Penetration Resistance of Concrete

作　　者：林明扬 

机构地区：[1]福建省建筑科学研究院有限责任公司福建省绿色建筑技术重点实验室,福建福州350108

出　　处：《混凝土世界》2025年第2期47-52,共6页China Concrete

摘　　要：在不同配合比及不同养护方式下,通过对比钻芯法获取的试件和圆模成型试件的电通量及氯离子迁移系数试验结果,研究两种制备方式对混凝土试件抗氯离子渗透性能试验结果的影响。结果表明:钻芯试件的电通量及氯离子迁移系数普遍高于圆模成型试件;混凝土的水胶比越高、掺合料掺量越低、粗骨料粒径越小或洁净程度越差,钻芯法对混凝土试件电通量及氯离子迁移系数试验结果的影响越大;当粉煤灰和矿粉的复掺总量达到40%时,对混凝土试件电通量及氯离子迁移系数的不利影响几乎消失;同时,钻芯法对自然养护试件的电通量及氯离子迁移系数试验结果的影响最大,对蒸压养护试件的影响最小。By comparing the electrical flux and chloride ion migration coefficient test results of specimens obtained by core drilling method and circular mold formed specimens under different mix proportions and curing methods,this paper studies the influence of the two preparation methods on the resistance to chloride ion permeability test results of concrete specimens.The results show that the electrical flux and chloride ion migration coefficient of the drilled core specimen are generally higher than those of the circular mold formed specimen;the higher the watercement ratio of concrete,the lower the admixture content,the smaller the coarse aggregate particle size or the worse the cleanliness,the greater the influence of the core drilling method on the electrical flux and chloride ion migration coefficient of concrete specimens;when the total amount of fly ash and mineral powder mixed reaches 40%,the adverse effects on the electrical flux and chloride ion migration coefficient of concrete specimens almost disappear;at the same time,the core drilling method has the greatest impact on the test results of electrical flux and chloride ion migration coefficient of naturally cured specimens,and the least impact on steam cured specimens.

关 键 词：混凝土 钻芯法 制备方式 界面过渡区 抗氯离子渗透 

分 类 号：TU528[建筑科学—建筑技术科学]