Strength predictions for slag cement setting at different temperatures

The prediction of concrete strength has become a major concern that is forc ing the construction industry to look closely at determining the appropriat e time when to strip the form work or to apply prestress forces to new conc rete. Normal concrete has different constitutions and can be subjected to d ifferent curing methods depending on the means available. Its characteristi cs are defined by the presence of mineral additives used to improve its eff iciency. This has led us to establish a work plan to predict the strength o f slag concrete, tested at different temperatures, from the data obtained f rom some control specimens of normal concrete, made only from clinker and s ubjected to a constant temperature of 20 degreesC. The slag material was ob tained from El-Hadjar (Algeria).