Effect of CSH Crystal Nucleus on Steam-Free Cured Fly Ash Precast Concrete Components

查看全文 作　　者：Ruyi [1]Luo;Yanyan [1]Hu;Tingshu [1]He;Xiaodong [1]Ma;Yongdong [1]Xu

机构地区：[1]College of Materials Science and Engineering,Xi’an University of Architecture&Technology,Xi’an,710055,China

出　　处：《Journal of Renewable Materials》索引2023年第11卷第9期,共16页

摘　　要：The measures of steam curing and early-strengthening agents to promote the precast components to reach the target strength quickly can bring different degrees of damage to the concrete.Based on this,the new nanomaterial CSH-the hydration product of cement effectively solves these measures’disadvantages,such as excessive energy consumption,thermal stress damage,and the introduction of external ions.In this paper,the effect of CSH on the early strength of precast fly ash concrete components was investigated in terms of setting time,workability,and mechanical properties and analyzed at the microscopic level using hydration temperature,XRD,and SEM.The results showed that under the same workability,CSH could significantly reduce the amount of admixture,shorten the final setting time,almost not affect the initial setting time,and accelerate the hydration of cement.At the optimum dose of 5%,the mechanical properties of the specimens were improved by more than 98%within 12 h of hydration,resulting in an earlier release time of 12 h and no risk of strength inversion later.The results of this paper give theoretical support to the behavior of precast components under steam-free curing. 关键词：Fly ash concrete prefabricated components steam-free curing CSH crystal nucleus TOBERMORITE

相关文献

参考文献（65）
引证文献（1）
耦合文献（0）

参考文献(65)

引证文献(1)

互联网出版许可证新出网证(渝)字10号全国400电话 - 免长途话费

Effect of CSH Crystal Nucleus on Steam-Free Cured Fly Ash Precast Concrete Components

参考文献(65)

引证文献(1)

用户提示