Acid-rain-tolerant external wall brick

The invention discloses an acid-rain-tolerant external wall brick and belongs to the technical field of building materials. The external wall brick is prepared from, by weight, 15-18 parts of cement, 1-5 parts of nano-scale activated carbon, 0.1-0.5 parts of nano-scale titanium-palladium alloy, 1-5 parts of borax, 1-5 parts of hydroxypropyl methyl cellulose, 0.05-0.08 parts of nano-scale tea leaf powder, 10-15 parts of diatomite, 0.01-0.05 parts of sodium silicate water solution, 0.1-0.5 parts of phenyl alkyl sulfonate, and 2-4 parts of glycerol triacetate. In the invention, the nano-scale activated carbon, the nano-scale titanium-palladium alloy and the nano-scale tea leaf powder are added to conventional external wall materials, and usage of diatomite is limited, so that the external wall brick is improved in acid-rain-tolerant performance. 本发明公开种耐酸雨外墙砖,属于建筑材料技术领域。本发明采用以下重量份的原料制成：水泥15份～18份、纳米级活性炭1份～5份、纳米级钛钯合金0.1份～0.5份、硼砂1份～5份、羟丙基甲基纤维素1份～5份、纳米级茶叶粉末0.05份～0.08份、硅藻土10份～15份、水玻璃0.01份～0.05份、烷基磺酸苯酯0.1份～0.5份以及甘油三醋酸酯