ASTM C 469 (C-469) determines the (1) chord modulus of elasticity (Young s) and ( 2) Poisson s ratio of molded concrete cylinders and diamond-drilled concrete cores when under longitudinal compressive stress. ASTM C469 provides a stress to strain ratio value and a ratio of lateral to longitudinal strain for hardened concrete at whatever age and curing conditions may be designated. The modulus of elasticity and Poisson’s ratio values, applicable within the customary working stress range (0 to 40 % of ultimate concrete strength), are used in sizing of reinforced and nonreinforced structural members, establishing the quantity of reinforcement, and computing stress for observed strains. The modulus of elasticity values obtained will usually be less than moduli derived under rapid load application (dynamic or seismic rates, for example), and will usually be greater than values under slow load application or extended load duration, given other test conditions being the same.
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Recommended Test Machine
Force range of 5 kN to 600 kN (1,125 lbf to 135,000 lbf)
Adjustable test space
The most popular choice for static tension and compression tests
These dual column testers are available in both tabletop and floor standing models
Recommended Testing Accessories
Standard load ratings up to 300 kN (67,500 lbf) *higher ratings available upon request
Platen diameters from 56 mm to 346 mm (2.2 in to 13.6 in)
Available in steel, stainless steel, aluminum, or delrin construction
Machined surface for flat interface with test specimen
Standard load ratings up to 300 kN (67,500 lbf) *higher ratings available upon request
Platen diameters available from 56 mm to 196 mm (2.2 in to 7.7 in)
Articulating platen aligns itself to specimen geometry
Available in steel or aluminum construction
Available from a 1 mm (0.04 in) measurement range to a 25 mm (1.0 in) measurement range
May be used in a wide variety of tests
Includes a magnetic and adjustable mounting base
Standard units meet Class B-1 of ASTM E83, Class 0,5 of ISO 9513
Measures displacement for axial tensile, compression, and cyclic testing
Gage lengths from 10 mm to 50 mm (0.5 in to 2.0 in)
Measuring ranges from 5% to 100% strain
Lightweight and self-supporting
