Maturity vs. Pull-Out: Which Concrete Testing Method Should You Choose?

jobsite concrete testing
jobsite concrete testing

When it comes to testing compressive concrete strength, there are several methods to choose from. Field-cured cylinder testing is the most common method utilized for monitoring concrete strength on construction sites. For the most part, it has remained unchanged since its introduction in the early 19th century. However, its longevity doesn’t necessarily mean it’s the best technique to employ as it takes more time than others to complete and involves destroying concrete samples.

Get Your First SmartRock Concrete Sensor for FREE

Giatec SR demo kit_
Giatec SR demo kit_

Let’s compare two other methods – the maturity method and the pull-out test – and explore their unique set of advantages and disadvantages.

Benefits of the Maturity Method

Construction worker installing concrete temperature logger at jobsiteThe maturity method is a technique that measures concrete strength in real-time and is based on the principle that concrete strength is directly related to its hydration temperature history. It is most often used for testing concrete at early ages, usually less than 14 days.

The temperature data is collected with sensors that are installed within the concrete formwork and subsequently uploaded to a smart device where the user can see the concrete’s psi/MPa in real-time.

SmartRock is an easy-to-use tool that allows in-field personnel to monitor concrete strength accurately and quickly while also minimizing costs over the longterm.

Pros:

  • Accurate and reliable – Compressive strength data is given in real-time and updated every 15 minutes
  • No time is wasted onsite waiting for results from a third-party lab
  • Non-destructive

Cons:

  • Requires a one-time calibration for each concrete mix to establish a maturity curve using cylinder break tests

Pull-Out Test for Concrete Strength Monitoring

The pull-out test, which started to be regarded as a legitimate method in the 1970s, consists of pulling hardened concrete using a metal rod that’s been installed in the concrete. The compressive strength of the in-place concrete is measured by calculating the force required to pull out the concrete fragment from a test specimen or structure.

Pros:

  • Easy to employ
  • Can be performed on both new and old constructions

Cons:

  • Semi-destructive in nature – This test involves breaking or damaging the concrete
  • A large number of test samples are needed at different locations of the slab for accurate results, increasing costs and time involved
  • Doesn’t measure interior strength of mass concrete as the pullout assembly only extends to about 2 to 3 inches into the concrete

Important Considerations for Concrete Maturity & Pull-Out Testing

Giatec SmartRock SensorHow do you decide which method is the best one for your project? Project managers and contractors should consider the following questions before making their choice:

What is your project timeline and when does it need to be completed?
Both tests are quick to implement. For the pullout test, a set of 10 pull-outs can be tested and the strength of a 100 m3 slab cleared for form removal in 20 minutes. However, the maturity method provides results in real-time.

How accurate do you need the data to be?
The pull-out test is accurate but requires tests in multiple locations on the construction site. The maturity method is more accurate as it measures the correlation between concrete temperature and strength in real-time.

Is non-destructiveness an important factor?
The maturity method doesn’t require damaging any concrete.

Are you focused on minimizing upfront costs or long-term costs?
The maturity method requires a higher upfront cost but provides more savings over the long term.

Which method is your team most comfortable using?
Discuss with your team which method they’re more comfortable using as this can affect safety, project timelines and costs.

Ultimately, the choice you make comes down to carefully weighing the pros and cons and figuring out which aspects are most important to the successful completion of your project.

Leave a Reply

Your email address will not be published.

Related Articles

Top 11 Green Ready-Mix Concrete Producers in North America 

Sustainability and green movements have been quickly taking over industries, and construction is no different. Every year, 20 billion tons (10 billion cubic yards) of concrete are produced globally. This makes it the second most consumed product on earth, after water. Cement is not only the most expensive ingredient in a concrete mix, but its production is also responsible for 8% of global CO2 emissions. Get Your First SmartRock Concrete Sensor for FREE Free Demo Kit Ready-mix concrete, concrete that is batched for delivery from a…

New Giatec 360 Updates – Part 2: Graph Customization Tools

This article will continue on the topic discussed in Part 1, be sure to check it out! Get Your First SmartRock Concrete Sensor for FREE Free Demo Kit DisplayThe max and min temperature limits can be assigned to a sensor using the Parameter Thresholds function on both the app and the web platform of Giatec 360. When assigned, these limits are represented in the form of fine lines in red (max limit) and blue (min limit) color. Using the 360 dashboard, a user can choose if they…

New Giatec 360 Updates – Part 1: Temperature, Strength, and Maturity Charts

As part of Giatec’s continued efforts and goal to meet customer requirements and expectations, progressive changes are being made to the system to better comply with updating needs. Working with clients on a global scale, we strive to provide a streamlined platform that is one place for all. With the feedback collected from our valued customers several updates and transitions have been made to the Giatec 360 program, especially the ‘Charts’. To learn what the updated site has to offer and how beneficial this can be…

Missed This Year's Net Zero Construction Conference? We've Got You Covered!

Register for Full Access to All the Recorded Sessions Until April 30th

Claim Your Free Demo Kit

Get Your First SmartRock Concrete Sensor for FREE

Get Real-Time Data with SmartRock®

See how it works today

We use cookies to provide you with a better experience, analyze site traffic and assist in our marketing efforts. By continuing to use this website, you consent to the use of cookies in accordance with our Privacy Policy Page.