The benefits of developing the novel concept of universal functions for similar mixtures is driven from the potential benefits to the concrete industry in predicting strength without having to repeat maturity testing each time a producer adjusts mixture proportioning to fine tune mix design; being able to quickly predict what will be the strength gain for small variations in mixture proportioning; and saving time and testing cost by reducing maturity testing in such conditions. For example, a producer could assess how variations in material and mixture proportioning will affect (i) fresh concrete properties, such as unit weight and air content, combined with (ii) UPV response and/or initial strength at early ages to predict concrete strength and/or dynamic modulus over time during the hydration at later ages. To achieve this, once the \"master curve\" and shift factor equations are defined for a specific set of concrete mixtures, trial batches could be produced during mix design and/or the concrete optimization phase to assess impact on fresh concrete properties and NDT response early on in order to estimate strength and modulus at later ages. This will reduce the need for the traditional ongoing shortcoming of maturity monitoring requiring extensive testing during concrete hardening and/or hydration over time when a mixture is modified or a new mixture is explored [14; 20; 25]. Such early assessment will also provide early warning on the potential implications of changes and/or variability in materials and proportioning without having to wait for follow-up testing during longer periods of hydration [14]. At the same time, such early assessment will minimize the need for ongoing monitoring of hydration and strength gain during concrete production, thus saving time and reducing testing needs. Thus, during concrete production, the use of master curves could minimize quality control testing for (i) assessing production quality and assess early impact on concrete strength at later ages as well as (ii) assess whether the 28-day design target strength is expected to be achieved based on limited testing early on. In terms of field evaluation during construction of a concrete structure, companion cylinders are often used for monitoring maturity and strength gain in time, as these are affected by similar field conditions as the structure. Such companion cylinders, along with the fresh concrete properties regularly monitored during concrete batching, could be used similarly to the lab testing case to assess from early ages what will be the follow-up implications in strength and modulus due to potential variability in production concrete uniformity as construction goes on. Such companion cylinders, and/or selected structural members, could be tested with UPV for verification as well. These early warnings could be beneficial in adjusting concrete mix materials, proportioning during the construction of the structure, or making sure that targeted values of strength are achieved. In a previous effort, the relationships between UPV and dynamic modulus with the temperature-time factor (maturity index) were investigated with a single concrete mixture [28]. The results showed that such relationships were dependent on mixture composition. In this study, the results of UPV, resonant frequency, and compressive strength of eleven concrete mixtures were investigated to identify (i) whether a \"master curve\" for a group of concrete mixtures is possible, (ii) the general predictive form of such a curve, and (iii) whether a transfer function for shifting the individual maturity curves to the \"master curve\" can be defined using mixture properties. It should be mentioned that objective of this study was to (i) propose an NDT-based maturity approach for the specific and/or typical concrete mixtures encountered in infrastructure projects in the region rather than a universal maturity study for all possible concretes and to (ii) assess whether the novel concept of \"master curves\" for maturity can by developed.