Young Period Flexible Formwork Concrete Carrying The Strength Of Development Law Test And Research

Flexible formwork supporting technology of pumping concrete in undergroundengineering is supporting new forms, mining without coal pillar roadway divided along goaf,driving roadway along goaf, cross mining and the mining without coal pillar roadway as wellas in goaf roadway formed in four forms, of which the roadway along goaf pillar drift ineconomy and technology has many advantages, so the conditions suitable for the mines arepreferred.The basic way of Retaining Roadways along goaf is when the upper section afterthe mining face, will face with a special transport roadway supporting material formaintenance, the retained roadway for working face under section return airway, such atunnel can be two times using.Flexible mode of pumping concrete supporting technology inRoadway along goaf is widely used.Flexible formwoUrk supnportinRg techenologgy ofi psumptineg conrcrete in the fiber flexibletemplate having a permeable impermeable slurry characteristics, can be internal concrete insuperfluous water discharge.In underground support, from the roof of the initial stress veryearly.In order to meet the technical design and construction technology requirements, theneed for flexible mode of pumping concrete in early age performance study.In this paper,through the orthogonal experiment method gets a group of suitable for flexible formworksupporting technology of pumping concrete mix ratio test, and a flexible formwork concreteat different age of8h,12h,1d,3d,5d,7d,14d,28d compressive strength.Then the specimensto into the curing room maintenance, make its healing, for its conservation again28days aftermeasuring the compressive strength.The research of the flexible mode of pumping concreteearly strength and speed up the construction progress has very important significance.The flexible mode of pumping concrete compressive strength index of.Compared with the common concrete control, the experimental results show that the soft mold, pumpingconcrete early strength is high, its strength is obviously higher than that of ordinaryconcrete.A fracturing of the flexible mode of pumping concrete of high residual stresses, tocontinue maintaining, the second fracturing intensity has not reduced, butincreased.Description of flexible mode of pumping concrete with strong ability of healing,the micro crack healing completely.In this paper, coal roadway along goaf based on project, based on the local materialprepared for flexible mode of pumping concrete supporting technical requirements of the softmold of pumping concrete, flexible mode of pumping concrete construction technology andengineering application.Practical application shows that it can be extensively applied in civilengineering.For fast hard self compacting soft mold the popularization and application ofpumping concrete in foundation.