JUNCTION STRUCTURE OF WATER IMPERMEABLE SHEET, DETERMINATION METHOD OF JOINING EXCELLENCE OF WATER IMPERMEABLE SHEET, SETTING METHOD OF JOINING CONDITION OF WATER IMPERMEABLE SHEET, AND CONSTRUCTION MANAGEMENT METHOD OF WATER IMPERMEABLE SHEET

摘要

PROBLEM TO BE SOLVED: To improve accuracy of a test before construction in order to show excellently water impermeable function so that a joined water impermeable sheet is not peeled off.;SOLUTION: At least a peel strength test is executed to a test piece of a water impermeable sheet including a junction by thermal fusion. In the peel strength test, a peel strength in the state where the junction is not peeled off but a base material of the water impermeable sheet is broken, or a value obtained by subjecting the peel strength to a statistical processing is used as a reference value, and a test piece satisfying the reference value is determined as an excellent test piece.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2018,JPO&INPIT