DB62∕T 3170-2019 氧化镁膨胀剂、水化热抑制剂用于混凝土收缩裂缝控制技术规程

前 言 根据《甘肃省住房和城乡建设厅关于下达〈2018年甘肃省工程建设标准及标准设计编制项目计划（第一批）〉的通知》（甘建标〔2018〕197号）要求，编制组会同有关单位，对甘肃省混凝土结构裂缝问题的现状进行了广泛调查研究，认真总结混凝土结构裂缝控制的设计和施工经验，同时参考有关国内标准和国际先进技术经验，并在广泛征求意见的基础上，制定了本规程。 本规程共分9章4个附录。主要内容包括：1总则；2术语和符号；3基本规定；4设计；5原材料；6配合比；7生产与运输；8施工；9质量检验和验收。 本规程由甘肃省工程建设标准办公室负责管理，由甘肃省工程设计研究院有限责任公司负责具体技术内容解释。执行过程中如发现需要修改和补充之处，请将意见和建议反馈至甘肃省工程设计研究院有限责任公司《氧化镁膨胀剂、水化热抑制剂用于混凝土收缩裂缝控制技术规程》编制组（地址：甘肃省兰州市城关区皋兰路3号盛贸华府4、5层，邮编：730030），以供今后修订时参考。 主编单位：甘肃省工程设计研究院有限责任公司 参编单位：武汉三源特种建材有限责任公司 中国市政西北设计研究院有限公司 甘肃土木工程科学研究院有限公司 甘肃省建筑科学研究院有限公司 4 甘肃省建材科研设计院有限责任公司 兰州有色冶金设计研究院有限公司 兰州市城市建设设计研究院 兰州宏建建材集团有限公司 甘肃经纬建设管理咨询有限公司 主要起草人：杜 雷 纪宪坤 杨忠平 刘 胜 安贵仓 苏富赟 郭士刚 彭高鹏 奥银仁 王军祥 王公胜 田斌守 陈天镭 芦长青 田炫宏 肖钊哲 方 博 刘 虎 辜振睿 主要审查人：王起才 王洪镇 王大军 王 栋 田斌守 邵文忠 苏富赟 5 目 次 1 总则 ··············································································································· 1 2 术语、符号 ··································································································· 2 2.1 术语 ······································································································· 2 2.2 符号 ······································································································· 3 3 基本规定 ······································································································· 4 4 设计 ··············································································································· 6 5 原材料 ··········································································································· 8 6 配合比 ··········································································································· 11 7 生产与运输 ··································································································· 13 8 施工 ··············································································································· 14 8.1 一般规定 ······························································································· 14 8.2 模板工程 ······························································································· 14 8.3 浇筑与振捣 ··························································································· 15 8.4 温度测试与控制 ··················································································· 16 8.5 养护 ······································································································· 17 9 质量检验与验收 ··························································································· 20 附录A 混凝土绝热温升降低率试验方法 ······················································· 22 附录B 氧化镁膨胀剂的反应时间测定方法 ··················································· 24 附录C 掺用氧化镁膨胀剂的混凝土限制膨胀率试验方法 ····························· 25 附录D 掺用氧化镁膨胀剂的混凝土安定性试验方法 ··································· 29 本规程用词说明 ······························································································· 32 引用标准名录 ··································································································· 33 附：条文说明 ··································································································· 35 7