Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Effects of Aloe Vera Mucilage as a Superplasticizer on Limestone Calcined Clay Self-Consolidating Concrete Performance

Andrew Nyabuto Onderi
ORCID logo ,
Silvester Abuodha
,
John Mwero
,
Lenka Scheinherrová
* ORCID logo ,
Joseph Mwiti Marangu
ORCID logo
Version 1 : Received: 13 December 2023 / Approved: 14 December 2023 / Online: 14 December 2023 (06:51:40 CET)

A peer-reviewed article of this Preprint also exists.

Nyabuto, A.O.; Abuodha, S.O.; Mwero, J.N.; Scheinherrová, L.; Marangu, J.M. Aloe Vera-Based Concrete Superplasticizer for Enhanced Consolidation with Limestone Calcined Clay Cement. Appl. Sci. 2024, 14, 358. Nyabuto, A.O.; Abuodha, S.O.; Mwero, J.N.; Scheinherrová, L.; Marangu, J.M. Aloe Vera-Based Concrete Superplasticizer for Enhanced Consolidation with Limestone Calcined Clay Cement. Appl. Sci. 2024, 14, 358.

Abstract

Self-consolidating concrete (SCC) is highly workable concrete that flows under minimal vibrations into congested reinforcement and sophisticated formworks. The properties of SCC are achieved by incorporating chemical admixtures. In this study, we analyzed if SCC could be designed with a cheap, easily accessible plant extract as a bio-admixture known as aloe vera mucilage (AVM). The main aim is to determine the effect of AVM on SCC prepared from ordinary Portland cement (OPC) and blended cement LC3, consisting of clinker (50%), calcined waste clay (30%), limestone (15%), and gypsum (5%). The AVM is applied in different dosages of up to 10%. The findings showed that the LC3 had a lower rate of consistency, lower slump values, and higher initial and final setting times compared to OPC. The V-funnel and L-box values were reduced with increased plasticizer dosing. Additionally, the OPC samples with both plasticizers achieved higher compressive strength than LC3 in the 7, 14, and 28 curing ages. However, the 2.5 % dosage of AVM showed some increase in compressive strength in both OPC and LC3 samples. Overall, AVM is comparable to the commercial plasticizer used as both influence the reduction of yield stress with an increase in slump flow.

Keywords

self-consolidating concrete; aloe vera mucilage; superplasticizer; rheology; yield stress; compressive strength; hydration stoppage

Subject

Chemistry and Materials Science, Applied Chemistry

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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