水化温升抑制剂对大体积混凝土性能的影响  

Influence of hydration temperature rise inhibitoron performance of mass concrete

作　　者：苏忠纯[1] 彭英俊 杨润来 曹忠露[1,3] 温伟标 吴彦博 洪志军 赵卫民 SU Zhong-chun;PENG Ying-jun;YANG Run-lai;CAO Zhong-lu;WEN Wei-biao;WU Yan-bo;HONG Zhi-jun;ZHAO Wei-min(Tianjin Port Engineering Institute Co.,Ltd.of CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300222,China;Shenzhen-Zhongshan Link Administration Center,Zhongshan,Guangdong 528400,China;CCCC First Harbor Engineering Co.,Ltd.,Tianjin 300461,China;Guangdong Communication Technology Testing Co.,Ltd.,Guangzhou,Guangdong 510550,China)

机构地区：[1]中交天津港湾工程研究院有限公司,天津300222 [2]深中通道管理中心,广东中山528400 [3]中交第一航务工程局有限公司,天津300461 [4]广东交科检测有限公司,广东广州510550

出　　处：《中国港湾建设》2023年第3期49-53,共5页China Harbour Engineering

基　　金：广东省重点领域研发计划项目(2019B111105002)。

摘　　要：采用不同厂家和同一厂家不同掺量的水化温升抑制剂对大体积混凝土抗压强度、抗渗性能和氯离子扩散系数进行试验,对混凝土硬化过程中的内表温度进行监测,分析水化温升抑制剂对混凝土性能和水化温升的影响。结果表明SBT和SY水化温升抑制剂对混凝土早期水化起到一定的抑制作用,对混凝土的后期强度发展和耐久性无不良影响;SBT水化温升抑制剂在混凝土中的掺量存在一个界限,超过此界限混凝土早期不能凝结硬化,该成果为水化温升抑制剂在大体积混凝土中的应用提供依据。The hydration-temperature-rise inhibitors(HTRI)with various dosages and from different manufacturers on the compressive strength,impermeability and chloride ion diffusion coefficient of mass concrete was tested with the measurement of the internal and surface temperatures of the concrete during its hardening.The influence of HTRIs on the performance of mass concrete and the hydration temperature rise was analyzed.The results indicated that,the SBT-type and SY-type HTRIs can inhibit the early hydration of concrete,but have no adverse effect on the later strength development and durability of concrete,and there is a threshold for SBT-type HTRI used in concrete,beyond which,concrete will not set and harden in its early age.The achievements of the study could provide a basis for the use of HTRIs in mass concrete.

关 键 词：水化温升抑制剂 大体积混凝土 内表温度 抗压强度 耐久性 

分 类 号：U655.4[交通运输工程—港口、海岸及近海工程]