防腐阻锈和防腐涂料技术在甘肃省昌马大型灌区改造项目中的研究与应用

Research and Application of Anticorrosive Rust-resistant and Anticorrosive Coating Technology in Gansu Changma Large Irrigation Area Reconstruction Project

甘肃省昌马灌区地处昌马洪积扇扇缘,地下水经洪积扇到达灌区后,造成土壤中含有大量SO_(4)^(2-)、Cl^(-),对混凝土和混凝土中的钢筋造成了严重腐蚀,如对新建渠道不进行防腐处理,将使渠道使用年限大幅降低,造成巨大经济损失。文章研究与应用了防腐阻锈外加剂水性和厚质弹性防腐涂料技术,解决了混凝土渠道和钢筋混凝土渠道内外质量受SO_(4)^(2-)、Cl^(-)的破坏问题,大幅提升了工程质量和使用年限,可供其他类似灌区推广借鉴。

Gansu Changma Irrigation Area is located in the edge of Changma Diluvial Fan.After the groundwater reaches the irrigation area through the diluvial fan,the soil contains a lot of SO_(4)^(2-)and Cl^(-)as a result,thereby causing severe corrosion on concrete and reinforcing steel bars in concrete.If the new-constructed channels are not treated with anti-corrosion treatment,the service life of the channels will be greatly reduced,thereby causing huge economic losses.The anticorrosive rust-resistant additive water-based and thick elastic anticorrosive coating technology is studied and applied in the paper.The damage problems of internal and external quality of concrete channels and reinforced concrete channels by SO_(4)^(2-)and Cl^(-)are solved,thereby greatly improving the project quality and service life,which can be used for reference by other similar irrigation areas.