The heat of hydration of pozzolana blended concrete is low. However, it is revealed that the rate of increase in concrete strength decreased relative to its maturity according to the same standard that applies to specimens of typically cured concrete and blended cement concretes do not adhere to this rule. Numerous opposing variables such as accelerating curing at ideal temperatures are very quick in improving the early strength. The paper reviews and outlines the conclusions drawn from research on the fundamentals behind various traditional methods of assessment of compressive strength of concrete as a function of maturity concrete. Various models for the prediction of early-age compressive strength of concrete from past research are also presented. The discovered correlation between the strength and maturity index that previously existed allows for the prediction of the in-situ concrete's strength. Analysis and comparison of the strength prediction models with concrete that had additional cementitious systems added is also presented. This paper also summarises the literature and discusses the use of in situ strength of concrete by maturity techniques