Original scientific paper

Optimizing the Sulphates Content of Cemen tUsing Multivariable Modelling and Uncertainty Analysis

D. Tsamatsoulis ; Halyps Building Materials S.A., Italcementi Group, 17th Klm Nat. Rd. Athens – Korinth, 19300, Greece
N. Nikolakakos ; Halyps Building Materials S.A., Italcementi Group

Abstract

This study aims at determining the effect of the cement composition and mortar age on the optimum content of sulphates using maximization of compressive strength as a criterion. Extensive experimentation has been performed to achieve this purpose by
utilizing four cement types and measuring the strength at ages ranging from 2 days up to 63 months. Strength is correlated with the ratio of sulphates to clinker content, SO3/CL and moles SO3/ moles C3A. A generalized model correlating SO3, cement composition
and curing time is developed, intensely indicating the necessity of placing the SO3 target within the optimum region and realizing it as well. The set of four equations involves polynomial and logarithmic equations correlating the variables. A variance analysis based on error propagation technique, proves that SO3 affects not only average value of strength but also its variability.

Keywords

Cement; sulphates; clinker; strength; optimization; model

Hrčak ID:

104789

URI

https://hrcak.srce.hr/104789

Publication date:

1.7.2013.

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