Know a How Crack Measuring Device Works

Cracks are likely to occur on concrete structures over time, and they could indicate underlying damage that must be addressed as soon as possible. For this reason, civil engineers rely on crack measuring devices to determine the size and the depth of cracks. There are many different crack measuring devices that are used for different applications. Here are some of them:

Digital Position Strain Gauge Deformation Meter:

This device is one of the most precise options for crack measuring equipment. It comes with a digital dial gauge, which is attached to a bar. A conical point is fixed and mounted at one end of that bar, and a moving conical point at the other end. There is a setting out bar to position pre-drilled stainless steel discs, which are then attached to a structure with an adhesive. The conical points are inserted into holes in the discs when a reading must be made. This way, any strain changes in the structure are translated into a change on the dial gauge's reading.

Measuring Magnifier:

Concrete structures typically have maximum crack width criteria that are between 0.2mm and 0.3mm. This range can easily be measured with a cost-effective magnifier. A good magnifier should come with 10x magnification, a 20mm x 0.1mm measuring range, a 32mm field of view, and a special design that lets you read on dark and light objects. Some magnifiers are self-illuminating, so you can use them in poorly lit areas.

Field Microscope:

This is a small, portable, and lightweight microscope that can perform the tasks of measuring magnifiers and heavy high-end microscopes. Its magnification is 50 times greater than a standard microscope, making it useful when you need an accurate measurement of the width of small cracks to a precision of 0.02mm. Its calibrated focusing ring allows you to measure the depth of cracks, too.

Crack Metres:


A crack width metre is like a ruler designed to help you compare crack sizes and get an approximate crack size when performing visual surveys. Another type of crack metre is the vibrating wire, which measures the movement across joints and surface cracks in concrete, soil, structures, and rock. It has a sensor on the outer body tube, and an inner sliding rod, which is linked via a spring to a vibrating wire sensor.

Comments

Post a Comment

Popular posts from this blog

Advantages of Universal Testing Machine

The main advantage of investing in a universal testing machine is that the device can be used to test the strength, durability, and suitability for most any material. A universal testing machine has the capability to pull, compress, bend, or stretch material to its breaking point. It is primarily used by laboratories that manufacture and or mould different types of plastics. A universal testing device features one or two vertical columns mounted on a base. A second horizontal plate contains attachments that are used to hold the sample and slides up and down during stress testing samples. Dual vertical column machines are preferred by most laboratories as they can handle larger samples in terms of size and weight. Determining tensile strength is the most common test performed in a universal testing machine. This is done by holding one end of a sample in place while the other is pulled away until two sides are torn apart. The same process is used for testing flexural str
Read more

Uses for Universal Testing Machine

Universal testing machine or UTM is aptly named as it can perform various types of tensile and compression tests on different materials. There are also many different terms used to refer to a UTM that you will commonly hear in the industry, among the most popular of which are a tensile tester, bend tester, and compression tester. Some types of UTMs are stripped of some capabilities and/or are marketed to specific sectors, like texture analyzers for food, peel tester for adhesives, labels, and tapes, and top load compression tester for pipes and packaging. True UTMs can perform all of these and more. They are great multi-purpose instruments for any QC or R&D laboratory. The following are only a few common uses for UTMs: Tensile testing – One of the most common applications for UTM, a tensile test measure how strong a material is, how long it can stretch, and how stiff it is as the material is pulled apart until breaking point. Compression testing – Compr
Read more

Precautions to Be Taken While Using a Piezometer

The piezometer is a measuring device that determines pore pressures underground and liquid pressure. By determining pore pressure, you can understand the behaviour of the ground before, during, and after a construction project. Certain precautions must be taken when using a piezometer to ensure proper usage and the accuracy of results. Here are some of them: Have the right equipment – Invest in a state-of-the-art piezometer that uses a proven method of converting fluid pressures on the sensitive diaphragm into frequency signals which are ideal in the demanding environment common with civil engineering applications. Modern piezometers are capable of long distance signal transmission without degradation. They can tolerate wet wiring conditions and resist external electrical noise, too. Some manufacturers make piezometers specific for different applications, for instance, you should be able to find one with a heavy-duty body that can be b
Read more