Title: Combined Effect of Polycarboxylate Ether and Phosphonated Superplasticizers in Limestone Calcined Clay Cement

Author(s): Sirajuddin Moghul, Sruthi Sreeram, Shengnan Sha, Franco Zunino, Robert J. Flatt

Publication: Symposium Paper

Volume: 362

Issue:

Appears on pages(s): 474-486

Keywords: superplasticizers, limestone calcined clay cement, phosphonated superplasticizers, polycarboxylate ether

DOI: 10.14359/51741004

Date: 6/14/2024

Abstract:

The use of sustainable construction materials, such as Limestone Calcined Clay Cement (LC³), has gained prominence in reducing the carbon footprint of the construction industry. However, LC³'s unique composition presents challenges in achieving optimal workability. This study investigates the combined effect of two potent superplasticizers, polycarboxylate ether (PCE) and phosphonated superplasticizers, to enhance LC³'s rheological properties. Through flow spread and heat evolution experiments, this research evaluates the synergistic impact of their fluidizing and retarding effects on workability and hydration.

Our findings reveal that the combination of PCE and phosphonated superplasticizers in LC³ exhibit a remarkable improvement in the rheological properties with marginal retardation. The study's outcomes offer valuable insights into the effective utilization of superplasticizers, paving the way for improved LC³ performance and its wider adoption in the construction industry, ultimately contributing to reduced environmental impact.