Presents the separation of composite compressive modulus and composite bending modulus for application to the calculation of concrete－filled steel tubular frames and analyses the effects of these two kinds of modulus on the stiffness of concrete－filled steel tubular space frames under vertical load and horizontal wind load

There are two kinds of modulus of concrete filled steel tubes that can be used in design, one is composite compressive modulus, the other is composite bending modulus.

A series of indoor experiments have been done to study compressive strength, compression modulus of resilience and cleavage strength.

Through the research on unconfined compressive strength and compression rebound modulus of cement stabilized aggregate in laboratory,and after analyzing the factors which affect these two indexes separately,the relationship between unconfined compressive strength and compression rebound modulus of cement stabilized aggregate is expressed.

The compression rebound modulus at different ages were tested with top surface measuring method,and the modulus development law with age was drawn.

The uncertainty of compression modulus of elastomeric pad bearing.

The uncer tainty of compression modulus of elastomeric bearing pads is evaluated and resea rched.

Four regressive equations which will provide reference for engineering practice were approached, including growth rate of compressive/tensile elastic modulus with age, compressive elastic modulus with age, compressive elastic modulus with strength.

In construction,high fluid and large volume fly-ash concrete is successful application through availably reducing compressive elastic modulus by increasing the dosage of fly-ash,and good effect is achieved.

Estimating Resilient Modulus of Asphalt Treated Permeable Base Materials;