Compressive or flexural strength of concrete is easily measured in a number of ways for different types of specimens. The most common method is compressive strength of cylinders, as measured by Compression Testing Machines. Gilson Compression Testing Load Frames are the stiffest in the industry and meet or exceed ACI 368 recommendations for rigidity.
Pro and Pro-Plus Digital Controllers are packed with features and carry a manufacturer’s two-year warranty. Versatile Gilson Compression Machines can also be used with Attachments and Accessories for flexural strength testing of beam specimens and load tests of other non-standard specimens. Compressometers and Extensometers measure deformation and strain of test cylinders during loading in Compression Machines. Our Portable Concrete Beam Tester is a convenient device for non-specification field measurements of flexural beam strengths. Testing hardened concrete in place is performed with Concrete Test Hammers and Windsor Probe Test Systems. Both devices are widely used and accepted methods for reliable estimates of strength based on hammer rebound or penetration resistance.
Concrete cylinder specimens frequently have uneven ends, and require capping to insure even load distribution when testing. Capping Compounds are sulfur and fly-ash mixtures heated to a molten state in Melting Pots and poured into Cylinder Capping Fixtures to create smooth, perpendicular surfaces on specimen ends. Gilson Rediron 9000 is an industry standard, producing ultra-strong caps with minimal curing times. Unbonded Capping Pads and Retainers are a convenient and economical method of insuring even load distribution. Gilson Neoprene Pad pricing is very competitive, and we maintain a large inventory. Concrete Cylinder End Grinders eliminate the need for pads or caps by using diamond grinding wheels to prepare the cylinder ends. These rugged, precision units are surprisingly economical for labs with high-volume testing.