Features of the RGK SK 60 sclerometer: design, principle of operation, average price

Having the proper tools is essential when evaluating the strength and quality of concrete. The RGK SK 60 sclerometer is one such instrument that is intended to assist experts in precisely and swiftly assessing the strength of concrete surfaces. You’re in the right place if you’ve been wondering what makes this particular sclerometer unique.

The RGK SK 60 has an efficient and user-friendly design thanks to its practical layout. Its design makes it simple to handle and measure precisely, which is crucial when inspecting older buildings or working on construction sites. The gadget is made of materials that are resilient to harsh operating environments, which guarantees that it will continue to function dependably over time.

Gaining knowledge about the operation of the RGK SK 60 can help you evaluate its efficacy. It works by measuring the reverberation of a hammer that is driven by springs and strikes a concrete surface. Next, the rebound is transformed into a number that represents the strength and hardness of the concrete. This technique offers a quick and non-destructive way to assess the quality of concrete without requiring a lot of setup or testing.

When compared to other sclerometers available on the market, the RGK SK 60 is reasonably priced. You should typically expect to pay between several hundred and a few thousand dollars for it. It is an excellent investment for both small- and large-scale construction projects because of its price point, which provides good value for the accuracy and dependability it offers.

If you’re a contractor, structural engineer, or just interested in concrete testing, knowing the features, cost, and design of the RGK SK 60 will help you decide what equipment you need.

For evaluating the quality and longevity of concrete surfaces, the RGK SK 60 sclerometer is a useful instrument for determining the surface’s hardness. This article examines the sclerometer’s construction, outlining its main parts and describing how they interact to produce precise readings. It also goes over the working principle, which is based on rebound distance and uses a spring-loaded hammer to determine surface hardness. In order to help you understand the cost of the RGK SK 60 in relation to its features and benefits, we’ll finally take a look at its average price.

Characteristics of the concrete strength meter

A concrete strength meter is the RGK SC 60 sclerometer. It is employed to determine the resistance to freezing and the hardness of concrete (or stone, brick structures). This mechanism makes it possible to perform quick, easy on-site testing without damaging the concrete surface and to get a very accurate test result.

Another name for the sclerometer is Schmidt Hammer, named after the Swiss engineer who created this design in 1948.

According to GOST, the meter can be used to collect data when determining the density of stone or concrete for compression between 10 and 60 MPa using elastic rebound technology.

The striker’s impact on the top layer of concrete serves as the basis for the technical design’s working principle, which measures the striker’s rebound in units of measurement on the scale. The acquired data show the indirect properties of concrete’s durability, strength, and compression strength.

The values in the table are applied to the base and repeated in the attached instructions to determine the concrete strength, taking into account the angle of the impact direction.

Design features

With its tiny mechanism, small size, and 1 kg weight, this device enables highly accurate testing. There are 29 components in a mechanical device.

Together with instructions, a sturdy and sturdy case for storage and transportation, and an emery stone for smoothing uneven surfaces, the measuring device comes with everything you need. The indenter sphere’s radius is 25 mm, the measurement gradation is 2 units, the impact force is 2.2 in J, and the minimum strength determination error is 15%. Scale and slider on the device’s wear-resistant body allow for visual control and recording of the data readings’ outcome. There is a table with measurement indicators on the back of the body. The device has a smooth metal body and an elongated rectangular shape with a conical-pointed top.

Mechanism and operating principle

The following is the device’s operating principle:

• using physical force, the indenter (at the narrow end) presses on the measured surface, and the striker is released from the lock;
• the stopper button rises;
• after removing the device from the measured concrete surface, the indenter extends, at the same time the striker catches due to the pressure of the spring – the structure is ready for work;
• the gauge is pressed, having installed it in the right place (for testing) – the indenter goes inside the housing;
• the compression spring will be compressed, and the working spring will be stretched;
• the striker, having been released under this action, will push the indenter;
• from this vibration the striker will move to the maximum upper position together with the rolling pin;
• the scale will show the value corresponding to the rebound force;
• the readings must be recorded on paper, otherwise they will be reset under the influence of the compression spring pressure.

The indenter is taken out of the housing and placed back inside after pressing again to test the concrete surface.

The strength gauge should be held perpendicular to the measured surface (stone, brick, or concrete) when taking readings.

Instructions for use

After unblocking the RGK SK 60 by pressing on a horizontal surface, measurements are made very carefully and precisely in the following order:

1. The instrument is placed on the desired point (strictly perpendicular) and slowly pressed until a jolt occurs.
2. The instrument is removed from the measured surface and the scale readings are looked at.
3. The data should be recorded before the pressure is released, otherwise the scale will be reset.
4. Measurements are taken at other desired points in a similar manner. It is recommended to take at least 12 measurements (interval up to 3 cm) in different places. This will allow you to determine the most correct average value of the rebound.
5. After all measurements are taken, the indenter is pressed back into the housing and the button is pressed – the instrument is locked.

The obtained values are compared in the table (on the housing base at the back) to determine the compression coefficient, which indicates the strength of the concrete surface at a particular location. In this position, the instrument is cleaned of dust, debris, and moisture after work and stored in its case.

Since the device is not in a horizontal position when measuring non-vertical surfaces, gravity plays a role in influencing the rebound force.

Possible malfunctions and errors in operation

The measuring device may experience errors or malfunctions over extended use, which need to be fixed. The central rod is greased and the internal components are cleaned with alcohol or gasoline prior to operation.

Calibration

Specialists with the necessary credentials perform the mandatory calibration. The sclerometer needs to be checked and adjusted/calibrated after extended use. These tasks are performed on specialized equipment, a steel calibration anvil, in a room that is kept at a temperature between 5 and 35 0 C, per standard procedures.

• the process is a sequence of actions, as in the usual measurement of concrete – but the analyzed surface is the anvil;
• measure the rebound force – a serviceable device will show data Rm = 80+2.

After 2000 measurements, it is advised to recalibrate the device using a steel anvil.

It is appropriate to look for additional errors on the device:

1. Maximum static friction of the runner and rod – the indicators should be within 0.5-0.8 (N). If a discrepancy is detected, then adjust the mechanism.
2. Determining the length of the working spring, if it deviates from the established indicator (61.5 mm), "adjust" at the point of fixation.
3. Rebound distance of the striker – the spring must stretch by 75 mm. For other indicators, make adjustments.

The calibration on a steel anvil must be repeated after more settings and modifications.

Measurements are done on a level, consistent surface, avoiding raised or porous areas, gravel inclusions, and seam joints.

General pros and cons

There are benefits and drawbacks to the gadget.

Advantages

• light weight, compact size, mobility – easy to use, transport, store, does not take up much space, comfortable to hold during work;
• hard, shockproof and reliable case – allows you to transport and store the meter without damage;
• wear-resistant metal case – protects internal parts from mechanical damage when falling, impacts, resistant to moisture, dust and dirt;
• high-quality assembly and durable parts – a guarantee of a long service life;
• high functionality and reliability;
• accuracy in measurements – a minimum error of up to 15% is allowed;
• simple design and ease of use;
• minimal expenditure of physical strength when working with the device – a woman or a teenager can handle it;
• obtaining instant measurement results;
• convenient and understandable measurement scale;
• test checks without destroying the concrete surface;
• the presence of a table (dependency) with data indicators on the case and duplication in the instructions;
• complete set – in addition to the protective case and instructions, there is also an emery stone, which is extremely necessary during construction work (for high-quality testing on a flat surface).

Cons:

• It is necessary to set the lock after work and remove it before testing;
• The device requires careful, gentle handling;
• You should measure thin surfaces (less than 10 cm) especially carefully – there may be distortions due to the elasticity of these areas (if possible, they should be additionally strengthened by supporting them);
• After frequent use, the design requires calibration, which can only be carried out on a steel anvil.

After using the device on an unclean construction site, it needs to be dried and cleaned completely.

Average prices for devices

The RGK SK 60 Sclerometer is reasonably priced when bought in Russia. Retail establishments, specialty shops, and construction firms charge between 16,000 and 30,000 rubles for the measuring device, depending on the location and distance from the city or settlement.

Useful video

A review of the RGK SK 60 sclerometer through video:

Feature	Description
Design	The RGK SK 60 is a handheld device designed for measuring the hardness of concrete. It has a robust build with a simple interface, making it easy to use on-site. The device typically includes a digital display for reading results and a probe for taking measurements.
Principle of Operation	The sclerometer works by measuring the rebound of a hammer mass dropped onto the concrete surface. The hardness is determined based on how far the hammer rebounds. This rebound value is then converted into a hardness number, which indicates the quality of the concrete.
Average Price	As of recent estimates, the RGK SK 60 sclerometer is priced around $300 to $500. Prices can vary based on the supplier and any additional features or accessories included.

A useful tool for anyone working with concrete, whether they are an engineer, contractor, or do-it-yourself enthusiast, is the RGK SK 60 sclerometer. In addition to being simple to use, its straightforward design ensures accurate and trustworthy measurements of concrete hardness. This sclerometer is built to last in harsh indoor and outdoor conditions thanks to its user-friendly interface and sturdy design.

It is easier to appreciate the RGK SK 60’s function in concrete testing when one is aware of how it operates. The tool assesses the material’s hardness by measuring the rebound of a spring-loaded hammer against the concrete surface. This straightforward but powerful idea enables people to evaluate concrete’s strength and quality fast, which is essential for maintaining structural integrity.

When compared to other models on the market, the RGK SK 60 sclerometer is reasonably priced. It is affordable and functional in equal measure, making it usable by a broad spectrum of users. Its consistent performance and the value it adds to concrete testing tasks are reflected in the average price.

All things considered, the RGK SK 60 is a very useful and affordable option for determining the hardness of concrete. For anyone in need of precise concrete testing results, it’s a wise investment due to its robust design, affordable price, and simple operation. This sclerometer offers a trustworthy solution for your concrete testing requirements, regardless of whether you’re analyzing newly constructed buildings or pre-existing ones.

Video on the topic

RGK SK-60 sclerometer – a mechanical device for measuring the strength of concrete

Review of the RGK SK-60 sclerometer

RGK SK 60 sclerometer

RGK SK-60 sclerometer (review)

Sclerometer concrete strength

Sclerometer for 76 bucks from Ali. Review of the Schmidt hammer. Measurements in practice.

Digital sclerometer for concrete SMSh-Ts | Schmidt hammer

Sclerometer we check the strength of concrete | Seruna eyes, deluna handles