Science and Technology Foresight ›› 2025, Vol. 4 ›› Issue (3): 63-73.DOI: 10.3981/j.issn.2097-0781.2025.03.006
• Review and Commentary • Previous Articles Next Articles
LI Qingbin1,2(
), YAO Qiyao1, HU Yu1,2, XIAO Jianzhuang1,3, LUO Danni1,3,†(
)
Received:2024-11-30
Revised:2025-04-14
Online:2025-09-20
Published:2025-10-17
Contact:
†
李庆斌1,2(
), 姚淇耀1, 胡昱1,2, 肖建庄1,3, 罗丹旎1,3,†(
)
通讯作者:
†
作者简介:李庆斌,教授,博士研究生导师。水沙科学与水利水电工程全国重点实验室主任。《水力发电学报》主编。主要从事大坝混凝土断裂损伤力学、高坝结构分析与智能建造等方面的研究。主持国家级、省部级重大科研攻关项目17项。获国家科技进步奖二等奖、教育部科技进步奖一等奖和教育部自然科学奖一等奖等奖项。出版专著2部,发表论文260余篇。授权发明专利50余件。电子信箱:qingbinli@tsinghua.edu.cn。基金资助:LI Qingbin, YAO Qiyao, HU Yu, XIAO Jianzhuang, LUO Danni. Development and Prospect of Temperature Control Technology of Mass Concrete for Modern Canal[J]. Science and Technology Foresight, 2025, 4(3): 63-73.
李庆斌, 姚淇耀, 胡昱, 肖建庄, 罗丹旎. 现代运河大体积混凝土温控技术发展现状与展望[J]. 前瞻科技, 2025, 4(3): 63-73.
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| 温控防裂材料 | 优势 | 劣势 |
|---|---|---|
| 低热水泥 | ① 低水化热、后期强度增长率大、后期强度高; ② 流变性和抗氯离子侵蚀性能可得到一定的提升; ③ 经济效益好 | ① 水化速率慢,影响早期强度增长; ② 施工周期延长 |
| 温升抑制剂 | ① 可有效降低水化放热速率; ② 有助于实现大体积混凝土温度场的孪生和控制 | ① 成本较高; ② 在低温条件下使用会导致水泥水化不完全 |
| 相变材料 | ① 即使在较大温差下,仍可控制温度平衡; ② 可用于高强大体积混凝土 | ① 成本高; ② 技术不成熟; ③ 工艺复杂 |
| 膨胀剂 | 通过产生膨胀应力,补偿因温度变化产生的收缩 | ① 用量控制不当,易产生开裂; ② 影响混凝土和易性 |
| 抗裂纤维 | ① 可有效控制裂缝的产生和发展; ② 施工工艺简单 | ① 成本高; ② 分散不均匀,易导致强度降低 |
Table 1 Comparison of properties of different temperature-controlled anti-cracking materials
| 温控防裂材料 | 优势 | 劣势 |
|---|---|---|
| 低热水泥 | ① 低水化热、后期强度增长率大、后期强度高; ② 流变性和抗氯离子侵蚀性能可得到一定的提升; ③ 经济效益好 | ① 水化速率慢,影响早期强度增长; ② 施工周期延长 |
| 温升抑制剂 | ① 可有效降低水化放热速率; ② 有助于实现大体积混凝土温度场的孪生和控制 | ① 成本较高; ② 在低温条件下使用会导致水泥水化不完全 |
| 相变材料 | ① 即使在较大温差下,仍可控制温度平衡; ② 可用于高强大体积混凝土 | ① 成本高; ② 技术不成熟; ③ 工艺复杂 |
| 膨胀剂 | 通过产生膨胀应力,补偿因温度变化产生的收缩 | ① 用量控制不当,易产生开裂; ② 影响混凝土和易性 |
| 抗裂纤维 | ① 可有效控制裂缝的产生和发展; ② 施工工艺简单 | ① 成本高; ② 分散不均匀,易导致强度降低 |
| 施工措施 | 优势 | 劣势 |
|---|---|---|
| 原材料预冷(风冷或水冷) | ① 冷却方法简单,易实现智能控制; ② 适用范围广 | ① 成本相对较高; ② 施工周期延长 |
| 新拌混凝土冷却(液氮冷却) | ① 成本低; ② 易获取; ③ 冷却效果好 | ① 冷却不均匀会影响混凝土强度发展; ② 会导致混凝土坍落度降低和凝结时间延长; ③ 混凝土搅拌机需要特殊衬板 |
| 冷却水管系统 | 在大体积混凝土结构中可有效控制水化热(如大坝) | ① 成本高昂; ② 可能会导致水管周围混凝土产生温度裂缝 |
| 保温隔热 | 成本低 | ① 温控效果与其他方法相比较差; ② 需要长时间放置 |
Table 2 Comparison of construction measures in temperature control of mass concrete
| 施工措施 | 优势 | 劣势 |
|---|---|---|
| 原材料预冷(风冷或水冷) | ① 冷却方法简单,易实现智能控制; ② 适用范围广 | ① 成本相对较高; ② 施工周期延长 |
| 新拌混凝土冷却(液氮冷却) | ① 成本低; ② 易获取; ③ 冷却效果好 | ① 冷却不均匀会影响混凝土强度发展; ② 会导致混凝土坍落度降低和凝结时间延长; ③ 混凝土搅拌机需要特殊衬板 |
| 冷却水管系统 | 在大体积混凝土结构中可有效控制水化热(如大坝) | ① 成本高昂; ② 可能会导致水管周围混凝土产生温度裂缝 |
| 保温隔热 | 成本低 | ① 温控效果与其他方法相比较差; ② 需要长时间放置 |
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