Steel Fiber
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Steel Fiber are widly used in refractory and construction.
| The steel fiber is that nowadays the concrete which the countries all over the world generally adopt strengthens materials . It have , resist , split , resist , bludgon performance strong , wear-resisting high kissing person who shut to be kind with cement intensity into, can increase the component intensity , lengthen advantages such as service life ,etc.. The steel fiber divides into and melts releasing type , wire drawing cutting off type , shearing type and cutting type ,etc. because of its different processing production methods. Shear section steel fiber can produce straight to sprain shape , wave shape , end collude shape , bow , compression shape a little now. Steel fiber divide into for general carbon steel fiber and special steel fiber because of its different raw materials. It is the raw materials that the steel fiber of general carbon adopts cold-rolled steel bands such as Q195 , Q215 , Q235 ,etc.; The special steel fiber adopts 304 Contrast forms in fibrous concrete of steel and ordinary concrete mechanics performance ( The data are taken from the construction material laboratory experiment report of Southeast China University) |
| Situation that the steel fiber is applied in project Save the time of constructing and money Complete removing the reinforcing bar , save materials and labourer's fee. Reduce the thickness of the floor, save the concrete and build the expenses. Wider piecing interval , connect and take shape the expenses and connect the maintenance cost sparingly. Construction is simple. Simple piecing and no longer mistakes orient the reinforcing bar . Increase the construction pace . Saves time and reduces the cost. Technology and user's interests Production of the big reduction crack. The ones that reduced and connected the side peeled off. Firmer piecing. Assault resistance high. Bigger tired durable limit. Reduce the maintenance cost . Longer service life . The typical range of application includes: The underground floor of industry, the warehouse , the factory, the hangar, the highway, bridge panel , the parking area , the runway, aircraft park and taxiway, the trader lives in the floor, drives pile, whitewashing, satisfy one, dam and stabilization ,etc.. Reference proportion in different uses of steel fiber . |
| Ground construction technical requirement of industrial building of fibrous concrete of steel 1,steel fibrous concrete match ratio Match ratio of the general project |
| 2.Technical requirement of construction 1.cement grade can't be lower than the 425th. Water than can't be 0.5 greater than dust. 2. thick bone grains of foot-path length should exceed steel 2/3 of fibre length ]; 3. steel fibrous fibrous volume of steel of concrete should not be less than 0.5, choose ; 4. bar make fibrous concrete of steel can't adopt the sea water among 0.5-2 generally, return the sand, forbid mixing the chlorination salt.; 5. besides above regulation, steel fibrous concrete spend, kiss material of him , should accord with current norm about regulation of raw materials that armored concrete spend; 6. steel fibrous consistency of concrete can consult similar project fix to ordinary concrete required consistency. The one degree of value of its slump constant corresponding ordinary concrete requiring value should be small.; 7 .contract if sewing , sew there aren't layer and concurrently each at the cushion at the concrete fibrous at the steel of structure to crew cut : a. Roll over cushion layer and concurrently pieces of layers of thickness greater than 130mm reduce ; b. The thickness of strengthening storey of the ground is greater than the cushion by one storey of thickness. Thickness its can take advantage of , turn back , reduce coefficient 0.75 , but can't be smaller than 50mm. 3.Put the material to require 1. invest blender stir about 30 second steel fiber and thick aggregate first, make the steel fiber disperse among the stones, it is unlikely to form the group; 2 put sand and cement into blender do , stir 30 seconds; 3 and then with water among the mixer rotating again, make the machine stired again 3 fen plants left and right sides; 4.Debulk 1 steel fibrous concrete build , mix and use at the same time at the same time , water and smash serially , dose sews and can't get rid of the construction joint and should be shaken closely knit while building less than dividing; 2 wipe surface , keep line steel fibrous concrete have , collect thick detailed material , sand rate loud, fiber messy to to characteristic that is distribute , adopt machinery wipe flat , prevent the fiber from exposing. Adopt device of line kept pigeonhole line craft can also avoid , draw hair produce fiber expose the phenomenon, after 24 hours , according to the maintenance in time of the routine , summer employ idiot ,etc. to cover, pay attention to keeping warm in winter. |
