&Construction step requirements, prepare necessary tools and maintenance products
, determine the repair area, the repair scope should be expanded outward than the actual damage range, cut or chisel out the vertical edge of the concrete repair area, its depth& This prevents the edges of the repaired area from becoming flaked.
. Clean the floating dust and oil on the surface of the concrete base in the repair area, and remove the loose parts.
, Clean the rust and debris on the surface of the exposed steel bars in the repair area.
. Chill the concrete base in the cleaned repair area or use a concrete interface treatment agent for interface treatment.
Use an air pump or water to clean the surface of the concrete base in the treated repair area. No open water should remain when proceeding to the next process.
. Mix C high-strength repair mortar according to the recommended water content% (weight ratio). Mechanical mixing can be divided into categories and is beneficial to the quality and speed of mixing. Manual mixing should be done in separate categories to ensure uniform mixing.
Since the mixed high-strength repair mortar contains a variety of polymer-modified exudates and rubber powder, the mixed high-strength repair mortar is more viscous. When plastering, attention should be paid to the smoothness of the knife.
For surfaces that require calendering, the outermost layer of plaster should be mixed slightly thinly, and the time should be mastered to facilitate calendering.
It is strictly prohibited to mix any additives or external additives into C high-strength repair mortar.
, The use temperature is ℃&℃
Maintenance method
, Hours after the completion of construction work in summer, water workers should be sprayed with curing agent or covered with wet straw bags for maintenance, and the surface should be kept moist. sky.
After winter construction is completed, it should be immediately covered with plastic film and covered with quilts for insulation and maintenance.
High-strength repair mortar is packed in bags.
, Store in a ventilated and dry place and prevent direct sunlight.
. The shelf life is one month. If it exceeds the shelf life, it should be re-inspected and it can be used only after passing the test.
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