Displacement Monitor is white plastic with red divisions. Measures horizontal and vertical displacement movements such as settling of a floor slab, and measures the opening and closing of the crack. Displacement range is 110mm (4.3in) and horizontal range is -10–50mm (-0.39in–2in).
See more on our Crack Monitors page.
What is a Crack Monitor?
A crack monitor is a tool used to measure and monitor crack widths in concrete and masonry structures. These inexpensive devices give accurate and precise measurements of movement so engineers and construction professionals can assess the damage and know what maintenance actions are required. By monitoring movement, crack gauges ensure the integrity, safety and durability of concrete structures, roads, buildings and bridges. Whether it’s minor cracks or major structural issues, these tools are for proactive maintenance and long term structural health.
Types and Applications of Crack Monitors
Crack monitors come in various types and configurations to suit different applications and monitoring requirements. Here are some common types of crack gauges and their uses:
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Flat Crack Monitors: For monitoring crack movement on flat surfaces, these are cheap and simple. Crack gauges can be attached to flat surface with screws, adhesive or epoxy and suitable for many applications.
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Corner Crack Monitors: For monitoring cracks in corners with two plates, these are cheap and can measure movement in angles from 70° to 180°. Perfect for assessing structural integrity where two surfaces meet.
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Standing Crack Monitors: For monitoring cracks in vertical surfaces. Give real time measurements of movement so perfect for ongoing structural monitoring.
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Waterproof Concrete Crack Monitors: For use in saltwater environments, these are for monitoring cracks in coastal structures or underwater applications. Waterproof design ensures reliable performance in harsh conditions.
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Inexpensive Devices: For budget monitoring solutions, these often have hot-stamped crosshairs and grids. A cost effective way to monitor crack movement without sacrificing accuracy.
How it Works
Crack displacement monitoring involves using a concrete crack monitor to measure the movement of cracks in concrete and masonry structures. Attach the crack monitor to the surface of the structure with screws, adhesive or epoxy. Measure crack widths of the crack at regular intervals at consistent points and record the movement over time on the record sheet. Use this data to assess the damage and know what maintenance is required.
Crack displacement monitoring can be done in several ways:
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Manual Measurement: Use a crack monitor to manually measure crack widths at regular intervals.
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Automated Measurement: Use a crack monitor with automated measurement capabilities like digital caliper or data logger.
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Remote Monitoring: Use a concrete crack monitor with remote monitoring capabilities like wireless or web based interface.
Whatever the method used, concrete crack displacement monitoring gives valuable information on the behavior of cracks in concrete and masonry structures so engineers and construction professionals can make informed decisions on maintenance and repair.
Concrete Crack Displacement Monitor:
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Crack monitors measures out-of-place movement, opening and closing of the concrete crack
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Crack monitors have easy to read divisions
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The crack gauges comes with progress chart for easy tracking and documentation of crack movement over time
Full Line of Equipment for Crack Monitors for Crack Movement in Concrete
Certified Material Testing Products offers Concrete Crack Monitors as part of our full line of concrete testing equipment for roads, bridges and foundations. Our crack gauges come with a crack progress chart to help users visually track and quantify movement over time. Need a vandal resistant monitor? The Concrete Crack Monitor Plus is the one for vandal resistant in the field. These devices monitor cracks and give accurate data on crack movement to inform maintenance decisions. The Economy Crack Comparator is for concrete cracks measurements and monitoring. The Concrete Crack Width Gauge is for measuring crack widths and locations before starting a monitoring program. The Concrete Crack Displacement Monitor is for measuring horizontal and displacement movement where there is a step across a crack due to a displacement of “out-of-plane” movement. The crack widths device comes with a record sheet for documenting crack measurements, to make monitoring and assessment over time easy.
