Maturity-Based Concrete Strength Monitoring

Cut costs and increase efficiency with SmartRock®, the maturity based concrete strength monitoring sensor

Measure Concrete Strength with Maturity

Leveraging the ASTM C1074 maturity method, SmartRock measures accurate strength at specific locations within the concrete structure.

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Cut Costs and
Save Time

Utilizing the ASTM C1074 standard, SmartRock enables users to eliminate costly cylinder break tests, streamline project schedules, and ultimately achieve superior outcomes.

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Remote Monitoring
Capabilities

By connecting to Giatec 360™ and/or the SmartRock app, users can remotely monitor their concrete curing process in real time and seamlessly share project data with all stakeholders.

The maturity method, as defined by ASTM C1074, is a standardized approach to estimate the early age strength of concrete based on its temperature history. To be more precise, it is a “technique for estimating concrete strength that is based on the principle that concrete strength is directly related to the cumulative heat to which the concrete has been exposed.”

By continuously tracking temperature and correlating it with strength development, construction professionals can accurately gauge when concrete has achieved its required strength. ASTM C1074 has standardized the maturity method, offering a reliable framework for familiar concrete industry challenges such as predicting optimal times for formwork stripping and post-tensioning. This method enhances scheduling precision, promoting structural integrity and safety by minimizing the need for cylinder break tests and optimizing project timelines.

SmartRock revolutionizes concrete strength monitoring by leveraging the ASTM standardized maturity method. The SmartRock sensor, embedded during concrete pouring, gathers crucial temperature data used to calculate concrete’s maturity index. The maturity index is a value that represents the cumulative effect of time and temperature on the hydration process of concrete, directly correlating with its strength development. Regardless, calibration is a requirement of the method approved by ASTM C1074.

Temperature Logging

Temperature logging is essential for concrete strength monitoring and calculating the maturity index. This index provides an accurate estimate of concrete strength throughout the curing process. By continuously tracking the internal temperature of the concrete, temperature logging enables real-time assessment of the curing progress and strength development.

SmartRock sensors log temperature data every 15 minutes from within the concrete element. This data is essential for calculating the concrete’s maturity, which enhances efficiency and reliability of construction operations while ensuring structural integrity and safety.

Wireless Data Transmission via Bluetooth

The collected data is transmitted wirelessly to the SmartRock app. This enables on-site personnel to access temperature and strength estimations in real-time without disturbing the concrete. You can also share data with relevant stakeholders, optimizing the construction process.

Strength Estimation

Using the known relationship between the concrete mix’s maturity and its strength (established through calibration curves or standard data), SmartRock estimates the in-situ concrete strength in real-time.

SmartRock Sensor
A Complete Solution for Strength Monitoring

Applications

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Post-Tensioning

In post-tensioning projects, SmartRock can calculate concrete maturity, aiding in accurate timing of tendon tensioning in slabs, thus reducing the risk of premature tensioning.

Formwork Removal

Obtaining accurate estimation of in-situ concrete compressive strength with SmartRock helps in reducing the time until the formwork can be removed.

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Highways and Roads

For highway and road projects, using maturity method through SmartRock can cut costs andsave time. Lanes can be opened to traffic much faster after repairs.

Podcasts for Strength Monitoring

Cold Weather Concreting

Infrastructure Development and Quality Assurance: Applying the Maturity Method in DOT Concrete Projects

Today, many states’ Departments of Transportation (DOT) accept the maturity method as an essential tool to understand the strength development of in-place concrete for their infrastructure projects. More specifically, 36 states recognize the method as a reliable and accurate estimation method of concrete strength. This tool facilitates the decision-making process for project managers in terms of their concrete without compromising quality, time, or cost. In this blog, let’s explore how the maturity method works in DOT concrete and construction projects. We will learn how these departments optimize their resources while combatting the pressure of deadline constraints.How Is the Maturity Method Used in DOT Concrete and Construction?Let’s understand how the maturity method works. The maturity method is a non-destructive method to estimate the real-time strength development of in-place concrete. Specifically, it works at an early age of less than 14 days. In the 1950s, Nurse, McIntosh and Saul developed a relationship between temperature and time to determine concrete maturity. They called their method the Temperature-Time Factor (TTF). In the 1970s, Freiesleben-Hasen and Pedersen developed a different Maturity Method. This method is based on the Arrhenius equation and is commonly used in Europe. The Equivalent Age method as well as the TTF…

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Schmidt / Rebound Hammer vs. The Maturity Method: Which Is Best for Your Concrete?

Schmidt / Rebound Hammer vs. The Maturity Method: Which Is Best for Your Concrete?

Schmidt Hammer (or Rebound Hammer) MethodThe concrete rebound hammer test (often referred to as Schmidt Hammer) was invented in 1948 and is still a popular choice to test the compressive strength of concrete. To use this method, the concrete rebound hammer must first be calibrated against a steel test anvil. Once calibrated, a spring release mechanism is used to activate a hammer which impacts a plunger to drive into the surface of the concrete. After impact, the plunger is locked in its retracted position and a rebound number is recorded (the numbers can range from 10-100). For accuracy, testers should record several numbers.In order to establish a relationship between the rebound number and the compressive strength of concrete, experts usually use the following two methods: ACI 228.1: In Place Methods to Estimate Concrete Strength, or BS EN 13791:2019: Assessment of In-Situ Compressive Strength in Structures and Precast Concrete Components.The Principle of the Schmidt Hammer (Concrete Rebound Hammer) TestAccording to The Constructor the concrete, “rebound hammer test method is based on the principle that the rebound of an elastic mass depends on the hardness of the concrete surface against which the mass strikes.” In other words, the amount of rebound recorded…

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