![]() With the use of super-plasticizer, the properties of workability and initial strength of concrete attained within 7 days can be altered. The literature review includes the application of ISI and ACI. The difference in the results of mix design using different codes arises due to the source of materials and different moisture conditions. ![]() Indian Standards and ACI ) were carried out using standard materials and empirical tables and graphs. The mix design provided by the codes i.e. ![]() Thus, dynamic program in excel was created for calculating mix proportions for different exposure conditions, aggregates size and properties desired. Use of code provisions every time for calculating the mix proportion can be a tedious and exhausting process. But due to limited availability of materials and complex designs of structures, there’s a need for more accurate and precise mix proportions. Though rough mix ratios for different strengths have been estimated such as for M20 (1:1.5:3), M25 (1:1:2) as per Gambhir. ![]() These ingredients can be mixed in different ratios to attain desired strengths. Concrete is a composite material consisting of cement, water, and aggregates.
0 Comments
Leave a Reply. |