THE METHOD USING THE DISTENSION-AGENT FOR PREVENTING THE CONCRETE LINING CRACK

摘要

The present invention is a method of removing the shrinkage during the cast-in-place concrete lining using the expanding agent occurs relates to a concrete lining a tunnel construction method of civil engineering and prevent thickness reduction and cracking of the ground and the Temple sikimeuro adhesive lining.; Using a swelling agent adhered to the drilling jibanmyeon and lining by controlling the above drying shrinkage expansion coefficient and to reduce stress generated in the lining structurally stable, in order to use expensive swelling agent to the cost of the ready-mixed concrete increased 30-40% there is characterized in that the reduced thickness of the lining in order to prevent an increase in construction cost.; The present invention can prevent cracks generated in the tunnel lining Temple, reduce the stress generated in the lining construction is structurally more stable concrete lining by imposing a prestress by adjusting the expanding agent if the estimated tensile stress is generated. Thus, by applying a reasonable thickness of the tunnel lining according to satisfy the stability and economy of concrete lining at the same time.