摘要
文中研究了单掺Ⅱ级粉煤灰时对再生骨料混凝土的性能影响。通过研究表明,再生混凝土中单掺Ⅱ级粉煤灰时,抗压强度和含气量随掺量的增加而降低,抗氯离子渗透能力先增大后减小,当水胶比为0.35,Ⅱ级粉煤灰掺量≤30%时,抗冻融能力较高。研究为今后大量使用粉煤灰掺和料提供了技术支持,具有一定实用性。
The influence of grade Ⅱ fly ash on the properties of recycled aggregate concrete was studied.The results shows that when grade Ⅱ fly ash is added in recycled concrete,the compressive strength and air content decrease with the increase of content,and the chloride ion penetration resistance first increases and then decreases.When the water binder ratio is 0.35 and the content of grade Ⅱ fly ash is less than or equal to 30%,the freezethaw resistance is higher.The study provides technical support and practicability for the large-scale use of fly ash admixture in the future.
作者
杨冉
杭美艳
YANG Ran;HANG Meiyan(Linzhou Vocational College of Architecture,Henan Anyang 456550,China;Inner Mongolia University of science and technology,Inner Mongolia Baotou 014010,China)
出处
《低温建筑技术》
2022年第2期82-84,89,共4页
Low Temperature Architecture Technology
关键词
粉煤灰
水胶比
再生骨料混凝土
fly ash
water cement ratio
recycled aggregate concrete
