Experimental Study of GFRP Cement Composite Formwork Support System
In view of the mechanical behavior and using forms of Glass Fiber Reinforced Plastics(GFRP)permanent cement composite formwork,a set of specialized non-bonded tensile screw formwork support system is proposed and its feasibility is verified.By changing the formwork scheme and support form,this paper designs three kinds of test schemes:ordinary wooden formwork with traditional support schemes PM,permanent formwork with traditional support schemes GM,permanent formwork with special support schemes GN,the three kinds of schemes were tested for concrete pouring,recording and analyzing the deformation of formwork in the process of pouring and the thickness of the shear wall after molding.The results show that under the GN support scheme,the formwork with non-bonded tensile screw formwork support system has the smallest lateral deformation during the pouring process,the measured thickness deviation of the wall after molding is minimized,the thickness of the wall after molding is also the most uniform.It is proved that the non-bonded tensile screw support system has good lateral stiffness and solidity,and can control the thickness of cast-in-place wall more accurately,which is more suitable for the construction of vertical concrete elements casting.
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