干湿循环与硫酸盐侵蚀耦合作用下水工混凝土损伤研究-《江苏水利》

文章信息/Info

Title:: Study on damage of hydraulic concrete under coupling action of dry-wet cycle and sulfate attack

作者:: 王逸然¹; 杨杰²; 赵春发³; 高懿伟⁴; 孙建伟⁵; 1.江宁区水务局, 江苏南京 211100; 2.江宁区谷里街道水务管理服务站, 江苏南京 211164; 3.江宁区水利工程质量监督站, 江苏南京 211100; 4.河海大学水利水电工程学院, 江苏南京 210024; 5.江宁区赵村水库管理所, 江苏南京 211155

Author(s):: WANG Yiran¹; YANG Jie²; ZHAO Chunfa³; GAO Yiwei⁴; SUN Jianwei⁵; 1.Jiangning District Water Affairs Bureau, Nanjing 211100, China; 2.Guli Street Water Management Service Station of Jiangning District, Nanjing 211164, China; 3.Jiangning District Water Conservancy Engineering Quality Supervision Station, Nanjing 211100, China; 4.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 210024, China; 5.Zhaocun Reservoir Management Institute of Jiangning District, Nanjing 211155, China

Keywords:: dry-wet cycle; sulfate attack; ultrasonic plane testing method; rebound method

摘要:: 硫酸盐侵蚀是影响混凝土耐久性的主要因素之一,混凝土损伤层的厚度及混凝土抗压强度作为衡量混凝土结构受侵蚀后退化的重要指标,能有效反应混凝土的损伤程度。本文主要从试验视角,采用超声波平测法和回弹法,重点研究干湿循环条件下不同浓度、种类盐溶液对水利工程混凝土表层损伤层厚度、混凝土抗压强度的影响,以期为服役在干湿循环与硫酸盐侵蚀耦合作用下混凝土建筑物设计与研究提供一些参考。

Abstract:: Sulfate attack is one of the main factors affecting the durability of concrete, and the thickness of concrete damage layer and compressive strength of concrete are important indexes to measure the degradation of concrete structure after erosion, which can effectively reflect the damage degree of concrete. From the experimental perspective, ultrasonic plane testing method and rebound method were used to focus on the influence of different concentrations and types of salt solutions on the thickness of concrete damage layer and compressive strength of concrete in water conservancy projects under dry-wet cycles, so as to provide some reference for the design and research of concrete buildings under the coupling effect of dry-wet cycles and sulfate attack.