采用套筒加压成型装置制备干硬性再生混凝土研

关键字：干硬性再生混凝土,套筒加压成型装置,制备工艺

（1.扬州职业大学 土木工程学院，江苏 扬州  225009；2.常州大学 土木工程系，江苏 常州  213164）

    摘要：干硬性再生混凝土是一种快硬早强的绿色建材，符合建筑产业现代化发展需求。根据试块加压成型需要，在塑料试模基础上设计出一种干硬性混凝土试块套筒加压成型装置。利用该装置完成了再生粗骨料取代率为100%的干硬性再生混凝土制备研究。结果表明，干硬性再生混凝土抗压强度随着成型压力的增大先升高后降低；当水温为（25±3） ℃时，水中养护优于标准养护，可使干硬性再生混凝土抗压强度提高约20%。
    关键词：干硬性再生混凝土；套筒加压成型装置；制备工艺；成型压力；养护方式
    中图分类号：TU528          文献标识码：A          文章编号：1001-702X（2017）06-0009-03

Researching dry-hard recycled concrete preparation by sleeve pressure forming device
WANG Bing1，ZHU Pinghua2，XU Fei1，SHI Xiaoyan1
（1.Department of Building Engineering，Yangzhou Polytechnic College，Yangzhou 225009，China；
2.Department of Civil Engineering，Changzhou University，Changzhou 213164，China）

    Abstract：Dry-hard recycled concrete is a type of rapid hardening green materials with early strength，and it accords with development needs of construction industry modernization. According to pressure forming requirements of test block，a type of dry-hard concrete test block sleeve pressure forming device was designed based on plastic mould. The preparation of dry recycled concrete with 100% recycled coarse aggregate replacement percentage was carried by this device. Results indicate that：the strength of dry-hard recycled concrete first increases and then decreases with the increasing of molding pressure. When the water temperature is（25±3） ℃，water curing is better than standard curing and it can improve the compressive strength of dry recycled concrete by about 20%.
    Key words：dry-hard recycled concrete，sleeve pressure forming device，preparation technology，forming pressure，curing method