The mix proportion of epoxy resin and mortar is that 6101epoxy resin: ethylenediamine: cement: sand is equal to 100:15:8:200:500. 1 base dispose, 1)a vertical fissure is formed along the crack gouge, vertical cracks cut into 2 surface treatment, Siyou cloth with its surface sticking epoxy base fluid and glass silk cloth is used for surface treatment ( in which oil used is epoxy liquid, and cloth is glass?silk cloth). 1) process of glass silk cloth. Glass cloth generally usually made by alkali-free glass fiber is twistless roving woven cloth. Wetting agent are added in the production process of glass silk cloth. As wetting agent contains grease and wax which will impact the combination of epoxy base fluid and glass silk cloth, it is necessary to remove oil and wax on glass silk cloth in order to make epoxy base fluid immerse in glass fiber, improving the bonding effect. The method for removing wax and oil is to place glass silk cloth in boiling water containing with soda for an hour, then you should blanching it with clean water. the way to judge whether there is oil and wax on glass silk cloth is to touch and feel it. If you feel like it is not greasy, it is clean. After removing oil and wax, glass silk cloth losts its original white and brightness appearance and its weight also reduces correspondingly. 2) paste process. When pasting, you should brush epoxy resin base fluid evenly on the paste face, then you should brush the second layer with the same way.
You just need to cut off the big square. At first, you need to cut off the big square along border line and center line. Then you should cut off the two overlapping rectangles along the diagonal. At this moment, there are four right triangle which just can be put into a hollow square with its area just is equal to the small square, then you should put the small square into the hollow aquare.
