Category Design

Cost reductions through heat management

In a corporate environment major cost indicators can show how we operate production. Utility costs, for instance, pracically demonstrate how efficient the production is.  In concreting situations electricity bills can go through the roof. But without proper baselines, historical data…

Strength prediction by maturity functions

The strength development of concrete largely depends on materials properties of cement, water, sand and aggregates and how all of these interact in a temperature-humidity-pressure managed environment. In the construction industry, knowing how concrete develops real-time helps extremely. When to…

Being free, breaking cubes and predicting strength

The strength development of concrete largely depends on materials properties of cement, water, sand and aggregates and how all of these interact in a temperature-humidity-pressure managed environment. In the construction industry, knowing how concrete develops real-time helps extremely. When to…

Secondary benefits

The maturity method has proven to be one of the most reliable methods to estimate in-place concrete strength. Thanks to new technologies and smart maturity systems like concrete.fit or Hilti. These systems utilizes wireless temperature sensors and cloud computing, the…

Validating calibrations

In this article we will explain why it is important to validate your maturity calibration, when to do it and how to do it. Why is validating calibration important? The maturity calibration is only valid for a specific concrete mix…

Preparing calibrations

To estimate the concrete strength using the maturity method, you need to make a calibration. The aim of performing a calibration is to find the relationship between time, temperature, and strength for each concrete mix design that you intend to…

Comparison of mathematical functions

Nurse-Saul function Freiesleben Hansen & Pedersen, Arrhenius function Weighted funcion Standard ASTM C1074 ASTM C1074EN 206-1:2002EN 13670 NEN 5790 Used North-America Europe Europe Assumptions on strength development Linear function of temperature Exponential function of temperature Exponential function of temperature Maturity…

Mathematical functions of maturity

What is a maturity function? A maturity function is a mathematical equation used to calculate maturity. This number describes the effect that temperature and time have on the strength development of concrete. The standard definition is as: “A maturity function…

Replacing break tests?

There are limitations when it comes to a full replacement of break tests. Break test results are often a requirement to comply with concrete standards. For example, you may need to perform a 28-day strength test in order to validate…