Table 7.

Comparison of factors considered in common shrinkage and creep prediction models.

Factors	Model Factors	CABR (1986)	ACI209 (1992)	CEB-FIP (1978)	CEB-FIP (1990)	BP (1978)	GL2000 (2000)
Internal Factors	Weight Ratio of Aggregate to Cement
	Air Content		√
	Cement Content					√
	Cement Type			√	√		√
	Concrete Concentration		√
	Fine Aggregate Accounts for Aggregate Weight		√
	Slump		√
	Water Cement Ratio
	Water Content
External factors	Loading Age	√	√	√	√	√	√
	Calculating Age	√	√	√	√	√	√
	Applied Stress	√	√	√	√	√	√
	Concrete Characteristic Strength during Loading					√
	Cross Section Strength
	Maintenance Method	√
	Concrete 28d Compressive Strength	√	√	√	√	√	√
	Load Duration		√	√	√	√	√
	Component Section Size	√	√	√	√	√	√
	Concrete Elastic Modulus during Loading						√
	Concrete 28d Modulus of Elasticity		√	√	√
	Relative Humidity	√	√	√	√	√	√
	Environment Humidity
	Component Dry Age					√	√