Introduction Many important characteristics of concrete are influenced by the ratio (by weight) of water to cementitious materials (w/cm) used in the mixture. By reducing the amount of water, the cement paste will have higher density, which results in higher paste quality. An increase in paste quality will yield higher compressive and flexural strength, lower …
USE OF WATER REDUCERS, RETARDERS, AND SUPERPLASTICIZERS Read More »
Admixtures are added to concrete batch immediately before or during mixing concrete. Concrete admixtures can improve concrete quality, manageability, acceleration, or retardation of setting time, among other properties that could be altered to get specific results. Many, not to say all, concrete mixes today contain one or more concrete admixtures that will help your pouring …
It is important to determine the correct content of admixture required for the concrete to get the desired results. The dosage of the admixture can be determine with help of Marsh cone test for particular brand of cement and brand of plasticizer, at particular w/c ratio. Marsh cone It is known that cement and water …
HOW DO WE DECIDE THE PERCENTAGE OF ADMIXTURE IN A CONCRETE MIX DESIGN? Read More »
Construction documents often specify a cement type based on the required performance of the concrete or the placement conditions. Certain cement manufacturing plants only produce certain types of portland cement. What are the differences in these cement types and how are they tested, produced, and identified in practice? In the most general sense, portland cement …