AHP-Based Evaluation Model for Optimal Selection Process of Patching Materials for Concrete Repair: Focused on Quantitative Requirements

International Journal of Concrete Structures and Materials

Table 3 Minimal performance requirements and those measurements.

Performance	Sub-performance	Performance evaluation item	Minimal performance criteria	Measurements
Quantitative evaluation performance	Chemical performance	Electrical resistivity	More than 12 kΩ cm	Resitest-4000
		Chloride permeability	Less than 4000 C	ASTM C1202
		Alkali-resistance	Less than 3 %	KS F 4042
	Physical performance	Compressive strength	More than 27 MPa	ASTM C 109
		Tensile strength	Less than 1.0 MPa	CRD-C 164
		Tensile Bond strength	More than 1.5 MPa	ASTM C 932
		Drying shrinkage	Less than 0.1 %	ASTM C 157
		Elasticity	More than 5GPa	ASTM C 469
		Thermal expansion	More than 16 millionths/°C	CRD-C 39