EXPERIMENTAL MEASUREMENT OF ADSORPTION OF SUPERPLASTICIZER ON CEMENT PASTE: A SYSTEMATIC REVIEW

Abstract

Despite the deep knowledge in the cement-superplasticizer incompatibility and profound understanding of their behaviour at the organo-mineral/absorption, adsorption and precipitation phases of cement- superplasticizer. There have been questions on the experimental methods used in measuring adsorption phase of this combination. This is because past experimental methods do not take into account the absorption and precipitation phases of the combination. This information is important because it affect the rheology of cement-superplasticizer paste and invariably the performance of concrete. Therefore, this article reviews the experimental methods used in assessing adsorption of cement superplasticizer for past three decades after the discovery of the fourth generation of superplasticizer. Scopus database was used to obtain information of the past research relating to the subject matter, a quantitative assessment was done using bibliometry analyses and PRISMA (Preferred Reporting Items for Systematic Review and Meta-Analysis) for quantitative assessment. This research encouraged the use of High Performance Liquid Chromatography (HPLC) when measuring adsorption for accurate result because if right method was used, it will aid better understanding of superplasticizer behaviour and acceptability among end users.