| 摘要 | 机场水泥混凝土道面在大风和高温条件下施工时易产生表面收缩裂缝。基于此, 本文采用室内试验模拟大风环境以及夏季高温环境, 研究养护方法对混凝土早期收缩及抗裂性的影响规律与机制, 并通过现场试验验证了不同养护方法在工程实际中的适用性。室内试验结果表明, 混凝土在大风条件下比高温条件下更容易产生裂缝。室内和现场试验表明使用传统的土工布、单纯喷涂养生剂或仅使用节水保湿养生膜难以保证混凝土表面无裂纹, 其中采用复合土工布养生膜的抗裂效果最优。此外, 掺加高分子吸水树脂可实现混凝土内养护, 因而可作为补充养护措施进一步提高混凝土在大风高温天气下的抗裂性能。 |
| Abstract | The airport cement concrete pavement is prone to surface shrinkage cracks during construction under strong wind and high temperature conditions. Based on this, in this paper, the influence effects and mechanisms of curing methods on early shrinkage and crack resistance of concrete were investigated through indoor tests to simulate strong wind environment and high temperature environment in summer, and the applicability of different curing methods in engineering practice was verified by on-site experiments. The indoor experiment results demonstrated that the concrete was more prone to cracks under strong wind than under high temperature. The indoor and on-site experimental results showed that it was difficult to ensure a crack-free concrete surface by employing traditional geotextile, simply spraying curing agent or using only water-saving moisturizing curing film, among them, utilizing composite geotextile curing film has the best anti crack effect. In addition, incorporating polymer water absorbent resin enables the concrete to be cured internally, so it can be used as a supplementary curing measure to further improve the crack resistance of concrete in strong wind and high temperature weather. |
| DOI | 10.48014/ems.20220727001 |
| 文章类型 | 研究性论文 |
| 收稿日期 | 2022-07-28 |
| 接收日期 | 2022-09-15 |
| 出版日期 | 2022-12-28 |
| 关键词 | 机场道面, 水泥混凝土, 表面裂缝, 养护措施 |
| Keywords | Airport pavement, cement concrete, surface cracks, maintenance methods |
| 作者 | 葛红斌1,2 |
| 所在单位 | 1. 厦门翔业集团, 厦门 361000 2. 福建兆翔机场建设有限公司, 厦门 361000 |
| Company | 1. Xiamen Iport Group, Xiamen 361000, China 2. Panport Airport Construction, Xiamen 361000, China |
| 浏览量 | 634 |
| 下载量 | 227 |
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| 引用本文 | 葛红斌. 大风高温天气下施工机场水泥混凝土道面的表面抗裂性及养护措施研究[J]. 工程材料与结构, 2022, 1(2): 24-34. |
| Citation | GE Hongbin. Investigation on surface crack resistance and curing measures of airport cement concrete pavement during construction in strong wind and high temperature weather[J]. Engineering Materials and Structures, 2022, 1(2): 24-34. |