Epoxy resin grouting material can be used for repairing concrete surface defect

Epoxy resin grouting reinforcement concrete surface using epoxy resin grouting material 1, surface pretreatment of epoxy resin grouting material of concrete surface contact, shall be cut in addition to its surface laitance and solid base, ensure grouting surface clean, dry, no fat. Outside the concrete surface edge grinding out of 25 mm thick chamfering edge, grouting material and foundation to improve edge bonding area, adhesion of the metal surface should also be no rust (need To achieve the finish that SSPC, SP6) 。 2, the foundation of the construction temperature environment including concrete and air temperature, in order to obtain the working condition, before the grouting material must be in 15 24 hour 25 ° C environment, construction and its subsequent environmental temperature control 15 - within 24 hours 32 ° C, 20 ° C is most appropriate. Summer work to avoid the high temperature at noon, when necessary should be set up awnings; Winter temperatures are low, should be in the area to build greenhouses, guarantee the construction environment temperature is greater than 15 ° C, construction appropriate choose at noon. 3, mixed with hand-held blender ( 200 - 250 rpm) Mix A ( Resin) B ( Hardening of the seam an agent) About 3 minutes; 2, in high power at low speed mixer ( 15 - 20rpm） Add C ( Packing) Mixed with the mixture of A, B, fully stir until all the orthopaedic infiltration is completed, about 5 - 10 minutes; At low temperature in order to ensure that the mixture is flowing in, can decrease the C ( Packing) The dosage. 4, epoxy grouting epoxy resin grouting material grouting should from the side to the other side; Can squeeze but not vibrating grouting process, in order to avoid air entrainment stranded among them; Grouting distance is greater than 1. 5 m, the use of high grouting funnel method, using the gravity pressure difference principle secondary grouting. Grouting work must be continuous to finish as soon as possible. Single grouting layer thickness control in 25 mm to 35 mm; A single bolt hole grouting depth is less than 1500 mm; More than 1 grouting volume. 8 m×1。 8 m x 150 mm need foam plate on the basis of surface glue article expansion joint reserve, grouting its mark in addition to the surface after final setting, made permanent expansion joint epoxy seal limb closed again. 5, check the solid epoxy resin grouting material after grouting, substrate with hammer percussion equipment: such as a tinkling indicates grouting layer is close-grained, such as sound clunk indicates grouting layer empty drum. 6, surface charge light and open mould and after grouting epoxy resin grouting material in the epoxy grouting material before initial setting, in order to beautiful effect, can be exposed on the surface of ash knife to receive light; After the final set, can tear open mold. Before using the above data are for reference only, please be sure to test the related performance.