• Accurate results to within approx. 15% on 1,250 to 8,500 psi concrete. • Calibration curves plot the hammer rebound number versus compressive strength.
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• Lightweight and portable. • Carrying case and instructions included. The Concrete Test Hammer is used as a control and test instrument for measuring the quality and strength of in-place concrete. This quick and inexpensive instrument is not intended as a substitute for control testing of concrete cylinders. The Concrete Test Hammer is valuable for use in the field for trouble-shooting to determine when test cores are needed and where they should be drilled. • Inexpensive, simple yet accurate device for monitoring crack movement. • Weather resistant, water proof design permits use in salt water. • Hot-stamped crosshairs and grid.
The Calibrated Crack Monitor is a simple, accurate device for monitoring the movement of cracks and joints in concrete, brick, or cement block structures. The Calibrated Crack Monitor consists of two acrylic plates. One plate is white with a black grid calibrated in millimeters, and the overlapping transparent plate has red crosshairs centered over the zero lines of the grid. After installation, the tape which holds the plates together is cut, allowing the two plates to move independently of each other.
Any vertical or horizontal movement of the crack or joint will cause the crosshair to change position on the grid. A chart is supplied with each gauge for periodic recording of movement.
The position of the crosshairs is copied onto a grid facsimile on the chart. • Approved for tests on both fresh and mature concrete. • Can measure concrete strength up to 17,000 psi (110 MPa). • Supplied complete with new electronic measuring device.
The new Windsor HP Probe System is designed to evaluate the compressive strength of concrete in-place. The test is nondestructive and can be used on fresh or mature concrete with equal effectiveness. The system features a new electronic measuring device for enhanced accuracy and efficiency. Three individual tests can be automatically averaged and displayed on the LCD in compliance with ASTM procedures. The data together with time and date of the test can be stored in the memory for subsequent uploading to a PC. The silver probes can be used for high performance concrete with a strength up to 17,000 psi (110 MPa).
• Complete test can be performed on-site. • Minimal technician training and no special equipment required. • Uses only two, environmentally safe dyes. • Identifies ASR in concrete and differentiates ASR from other causes of degradation. One of the primary causes of premature concrete deterioration is alkali-silica reaction (ASR). ASR causes concrete to deteriorate when sodium and/or potassium from cement attacks silica rich components of aggregate, producing gels that expand and eventually crack the structure. In use, two reagents are applied to the broken surface of a concrete core and the excess rinsed off.
On contaminated concrete, the resulting stains reveal the presence of ASR. The stains also reveal the extent of the ASR in the concrete and indicate the stage of ASR progress. A yellow color indicates that degradation has begun and a pink color warns that degradation is advancing.
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Download lagu yg liriknya lupakanlah saja diriku bila itu bisa membuatmu kembali bersinar dan berpijar seperti duluth trading. • Pre-installed gasket system eliminates need to handle sticky tape material. • Unique O-ring design seals dome to concrete instantly and installs quickly. • Instructions provide simple 1-2-3 step approach.
• Precision dome reduces variability. • Specifically metered calcium chloride ensures consistent measurement up to 20 pounds. Designed for measurement of concrete moisture, the Vapor Emission Test Kit consists of the equipment needed to conduct the anhydrous calcium chloride test. This test works by a change in weight of moisture-absorbing anhydrous calcium chloride and represents the amount of moisture transmitting out of a large concrete surface area. A scientifically engineered dome and a packet containing the proper type and amount of calcium chloride reduce variability in results.
A pre-installed gasket ensures accuracy and easy installation. A gram weight scale with gradations to 1/10 of a gram is required. • Measures both air and water permeability at the same time. • Permeability measurements at the surface as well as within the concrete mass can be determined. • The porosity of sealants and surface mortars can be checked. Permeability, an important parameter in assessing concrete durability, can be accurately measured by this unique field test system.