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Concrete Slump Testing

K Slump Tester and Tamping Rod for In Place Measurements of Concrete

Improve workability with our fresh concrete slump testers and k slump testers and other equipment, designed to assist with consistency measurement in concrete batches and concrete mix. The slump tester or k slump tester products, or concrete slump test kit, accurately measure the workability of fresh concrete for your project and determine how much water each batch contains.

At Certified MTP, we offer a wide range of concrete testing equipment, including slump tester or k slump tester and all other slump testing equipment for various jobs. Our k slump tester and slump cone test sets are complete kits providing everything you need to perform a slump test with a k slump tester.

Our most popular Portable Slump Cone Test Set allows you to perform a slump test on freshly mixed concrete. Other slump tester or k slump tester products, or concrete slump test kit, include a variety of 16mm Tamping Rods, and Slump Cones made from corrosion-resistant steel. 

All of our slump testers or k slump tester and every slump cone meets ASTM standards.

Essential Features to Look for in a K Slump Tester, Tamping Rod, and Slump Cone for Wet Concrete

A concrete slump test measures the consistency of the concrete mix with a k slump tester. The k slump tester is used to ensure that the right amount of water is added to the concrete mix, as well as to test strength and workability. When choosing a k slump tester, or concrete slump test kit, a tamping rod, or a slump cone, there are several features to consider. The k slump tester provides accuracy, durability, ease of use, and cost-effectiveness of the slump test is essential.

Accuracy is key when testing concrete mixes; a good k slump tester, , or any concrete slump test kit, should be able to provide accurate results with minimal variation in readings between tests. An accurate slump test with the slump tester or k slump tester result is critical.

You should also look for durability, ease of use, and cost-effectiveness for your slump tester or k slump tester.

Benefits and Importance of Slump Testing

Slump is a measurement of the structure of freshly mixed concrete, which determines its suitability for a particular application. Slump test equipment, or slump tester or k slump tester, is used to test workability and ensure the slump of newly poured concrete is flowing at the proper rate.

When a slump test fails, it indicates that the batch has not been mixed properly. For example, with a collapse slump, you know you must remix the concrete. Fortunately, you can easily change the mix and add water following a test.

A concrete slump test is popular among contractors because it’s easy to use the equipment. In field conditions, the slump test can ensure uniformity for multiple loads.

How to Use K Slump Tester

Several steps are involved in a concrete slump test, but it’s a simple procedure. Using a slump cone is the standard test method. The slumped concrete forms in various shapes, which are then measured. The tester uses a metal slump cone, which is open at both ends with attached handles. Typically, a slump test cone has a top diameter of 3.1 inches, a bottom diameter of 7.9 inches, and a foot all. 

Follow these steps to perform a slump test with a k slump tester:

  1. Make sure the internal surface of the cone is clean. Moisten the cone to reduce surface friction and remove concrete that has dropped accidentally.

  2. Place the cone on a hard, non-absorbent, smooth, horizontal surface. A slump cone base plate and a tamping rod can assist greatly.

  3. Fill the slump cone with a fresh sample of mixed concrete.

  4. Tamp down the fresh concrete 25 times with a bullet-nosed tamping rod.

  5. Add two more layers, tamping down 25 times between each layer with the steel rod. You should have three layers in total.

  6. Strike off the excess concrete so the top surface is level with the top of the metal mold.

  7. Lift the cone vertically without rotational movement so the unsupported slumps.

  8. After the slump of wet concrete, place the cone next to it. Measure the slump using a tape measure on the base plate, starting from the top of the slump to the top of the cone. Any standard concrete slump test kit can help with this procedure or a k slump tester.

You can retest if you get a shear slump or zero slump or if the concrete completely collapses or if you ar enot satisfied with the results when comparing to the correlation chart.

What Are the Possible Outcomes of using a K Slump Tester?

Four measured results can occur while using a k slump tester. Slumped concrete takes one of these shapes:

  • True Slump: A true slump is the desired outcome with in place measurements of slump of fresh concrete. This result means the wet concrete simply subsides, indicating a high workability mix. The ideal slump measurement is 4”, with a range of 1-4” for beams, reinforced walls, and building columns. This is the only slump measured in this test.

  • Shear Slump: In this instance, the top portion of the wet concrete shear or collapse slump and the remainder slips sideways.

  • Collapse Slump: The mix is too wet, so the concrete collapses completely.

  • Zero Slump: Zero slump concrete has a very low water-cement ratio, resulting in dry mixes. This type of wet concrete is primarily used in road construction.

The slump range will indicate the type of work for which the concrete is suitable.

Other Types of Slump Testing

There are several other ways to perform the test, including the following:

  • Flow Table Test: Used on fresh concrete that’s too liquid to be measured using a standard cone test with fast approximate determination of slump. The following procedure is used:

    • Wet the flow table.

    • Place the concrete cone in the center point of the flow table and fill it with a layer of wet concrete.

    • Tamp the concrete ten times, then add a second layer and tamp it another ten times.

    • Lift the cone so the concrete can flow out.

    • Lift and drop the flow table fifteen times.

    • Measure the diameter of the flow on the base plate

  • Automated Slump Meter: This slump tester equipment has sensors and controls that measure and display the slump with in place measurements. There are automated slump meters that add water to the mix while the concrete truck is driving to its destination.

  • The K Slump Tester is a specialized device used in the field of concrete technology to measure the workability and consistency of fresh concrete before it sets. The k slump tester tool provides fast approximate determination and an innovative approach to evaluating concrete slump, a critical parameter that indicates the concrete's flowability and its ease of placement and compaction without reducing its strength and durability. The K Slump Tester is portable and easy to use directly at the construction site, offering immediate results that are crucial for ensuring the quality of concrete work.

  • Unlike the traditional slump cone test with the k slump tester, which involves measuring the vertical settlement of concrete with fast approximate determination, the K Slump Tester measures the slump directly and can also provide an estimate of the concrete's strength and the k slump tester provides in-place workability. The k slump tester consists of a graduated probe that is inserted into the fresh concrete, and a reading is taken to fast approximate determination the slump. This k slump tester method reduces the subjectivity associated with traditional slump tests and provides a more accurate and consistent measurement. The K Slump Tester is an invaluable tool for civil engineers, construction professionals, and anyone involved in the quality control of concrete, enabling them to make informed decisions on-site and ensure that the concrete mix meets the specified requirements with the k slump tester. 
  • The K Slump Tester represents a significant advancement in the domain of concrete technology and slump testing of wet concrete, offering a more nuanced and practical approach to assessing the workability and consistency of freshly wet concrete. The k slump tester tool is instrumental in performing slump testing, a critical procedure that determines the fluidity and ease of handling of concrete before it hardens. Unlike traditional methods, the K Slump Tester facilitates in-place measurements, enabling construction professionals to gauge the concrete's condition directly at the job site, thereby ensuring optimal quality and adherence to specifications.
  • Slump testing, traditionally conducted with a slump cone, involves filling the cone with fresh concrete, lifting it, and measuring the subsidence. However, this method, while standard, can introduce variability and subjectivity into the process. The K Slump Tester addresses these challenges by providing a direct measure of the slump through a graduated probe that is inserted into the concrete. This approach not only streamlines the testing procedure but also enhances the accuracy and reliability of the results for the concrete retained.
  • One of the key features of the K Slump Tester is the inclusion of a correlation chart, which is essential for interpreting the results accurately for the concrete retained. This chart enables users to understand the relationship between the K Slump Tester reading and traditional slump values, offering insights into the concrete's expected strength, workability, and performance. By utilizing this correlation chart, professionals can make informed decisions regarding the concrete mix's suitability for specific construction tasks.
  • Moreover, the K Slump Tester is designed to measure the amount of concrete retained on the probe, providing a quantitative assessment of the concrete's viscosity and flow characteristics. This feature in the k slump tester is particularly beneficial for determining the in-place workability of concrete, ensuring that it can be placed, compacted, and finished effectively.

  • Overall, the K Slump Tester is a valuable tool for anyone involved in concrete construction and quality control for concrete retained. The K Slump Tester is not only simplifies the process of slump testing but also provides a more comprehensive understanding of the concrete's characteristics, ensuring that the final structure meets the highest standards of strength and durability.

Get Slump Cone Test Sets and K Slump Tester at CertifiedMTP

Whether you’re looking for a base plate, steel tamping rod, slump test cone, or complete K Slump Tester kit, we have what you need for your next construction project. With our full range of slump test materials, k slump tester, and and other tools to test air content and more, you can manage any procedure successfully. Plus, our price range is suited to any budget.

Contact us with any questions, or shop Certified MTP today!


1. Can I Perform Slump Tests On-Site for Concrete with a K Slump Tester?

Yes, absolutely! Doing the tests onsite with a k slump tester has several advantages for in place measurements. Once the slump cone is removed in a vertical direction, the resulting concrete slump value provides valuable insights into the workability of the concrete. You can assess the moisture content of the concrete slump value easily, but make sure you do so on a flat surface in a place free of vibrations and other factors that could affect the slump value while using the k slump tester.

2. Are There Any Specific Standards or Guidelines for Conducting Slump Tests with a K Slump Tester?

There are specific standards that apply to various types of concrete, including normal reinforced concrete and hydraulic cement concrete. Different regions also have their own standards, including the European Standard, Indian Standard, British Standards, and American association standards. American standards explicitly state the required slump cone height, slump testing procedures, and acceptance criteria for different applications, including constructing pavements and structures with light reinforcement. While minor differences exist, all standards align with international standards to ensure accurate and consistent slump testing with the k slump tester.

Related Blogs for Slump Testers and K Slump Testers:

Uncovering the Best Slump Cone: A Comprehensive Guide 

Understanding the Slump Tester & Its Uses

Slump Test of Concrete: A Comprehensive Guide

Slump Test Table: Measure Workability of Concrete

Tampering Rod for Concrete Slump and Cylinder Mold Tests

Slump Test: Measuring the Consistency of Fresh Concrete

Concrete Slump: What Is It and Why Does it Matter?

Finding the Workability of Concrete with the Slump Test

How to Perform a Slump Test of Concrete: Steps and Results

Consistency of Concrete; How It's Measured, Why It's Important, and Relation to Workability

The Proper Pressure with Certified Concrete Testing Products

Materials Testing Experts Explain The Importance Of Concrete Testing

Tamping Rod: Find the Perfect Fit for Your Concrete Testing

Choosing the Right Concrete Scoop for Reliable Slump Tests

Guide to Slump Test Concrete: Methods, Tips & Significance

Flow Test of Concrete: Unlocking Workability Wonders

Slump Concrete Meaning: Consistency & Quality Control

ASTM C 143 Slump Test:  Mastering Concrete Consistency

Metric System: A Guide to Units & Conversions

Tamping Rod for Concrete: Guide to Best Applications

Slump Concrete Test: Procedures and Significance

Concrete Slump: The Key to Quality and Workability

Concrete Water Permeability for Durability and Performance

Decoding the Surface: Is Concrete Porous or Nonporous?

Initial Set Time of Concrete: Key Factors & Practical Tips

Consistency in Concrete: Key Factors and Testing Techniques

Sand Cone Test Explained: Techniques and Best Practices

Sand Equivalent Test: What Can You Learn 


Need more information on the K Slump Tester, we highly recommend reading Mastering K Tester: Accurate Concrete Slump Measurements