Description

This product can ensure working life more than *0mins with a higher strength. From mixing, concrete road surface resume working . Polar Bear CSA Concrete Road Facing Urgent Repair Material is obtained by special Rapid-hardening Sulphoaluminate cement with composite special admixture, this product has passed appraised science and technology achievement by Hebei province , got success apply in Haerbin Airport , Mudanjiang Airport for road surface urgent repair Properties: 1. Special applicator was not necessary while operating, , just need mixed repair material, sand and crushed stone with water in designed ratio, so convenient for operating. 2. This product can ensure working life more than *0mins with a higher strength. From mixing, concrete road surface resume working just need 4 hours, so it is an ideal urgent repair material for airport and expressway, etc 3. For based on special rapid-hardening sulphoaluminate cement, this product have excellent sulfate-resisting and seawater, also can avoid the damage from alkali aggregate reaction. 4. Low rate of batch water with its slight expansion make this material have a high degree of compaction beside excellent capacity about breeze-thaw resistance and salt. 5. Excellent adhesive is to make the interface between new and old concrete firmly bond. Type of Low temperature : **0~*0℃ Type of Low temperature : *0~*5℃ Type of Low temperature : *5~*5℃ Working life of *0mins, 4h, Compressive strength(MPa):≥*0MPa Working life of *0mins, 1d, Compressive strength(MPa):≥*0MPa Working life of *0mins, 7d, Compressive strength(MPa):≥*0MPa Working life of *0mins, *8d, Compressive strength(MPa):≥*5MPa Using methods 1. Working surface should be a rigid and need watering before repaired, meanwhile, clear the contaminant and ponding of water. 2. According to the mix proportion of Cement based material/sand/crushed stone/water=1/1.5/1.5/0.***0.3, and the water can be adjusted by actual demand. 3. Cement based material should be added with admixture while mixing, then feeding the mid-sand, crushed stone and water, stir for 5mins better. 4. Using in negative temperature environment, it should be use hot water and feeding turning should be according to sand first, then crushed stone and water, with the binder last. Adjustment of water temperature should be controlled well to ensure placing temperature is higher than 5. 5. Select the clean water accord with TGJ*3 standard of concrete mixing water beside accord with the JGJ standard of medium sand and crushed stone.