Development of a Novel Viscosity Modifier Agent for Cementitious Materials: Preliminary Study

Autor:	Luiza Rodrigues Meira de Miranda, Paulo César Correia Gomes, Karoline Alves de Melo Moraes, José Roberto Tenório Filho, Silvia Beatriz Beger Uchôa
Rok vydání:	2021
Předmět:	Chitosan Technology and Engineering Biopolymer Materials science Viscosity modifier Building and Construction engineering.material Strength of materials Chemical engineering Mechanics of Materials engineering General Materials Science Cementitious Concrete Civil and Structural Engineering
Zdroj:	JOURNAL OF MATERIALS IN CIVIL ENGINEERING
ISSN:	1943-5533 0899-1561
Popis:	Concrete compositions demand products in order to meet certain requirements and specific properties. For the production of self-compacting concrete, a certain amount of fine materials and/or chemical products should be added to the mix as viscosity modifying agents that will enable a mixture with enough flowability, and that should show stability. This paper presents preliminary results of a novel viscosity modifying agent based on a biopolymer (chitosan) found in the residues of the fishing industry. The effects of the product were tested in cement pastes by means of typical flow tests and rheological measurements. The new admixture promotes an increase in the plastic viscosity and yield stress of fluid cement pastes resulting in stable and fluid mixtures.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ed24f3ea1207cd549901584d03ba4058 https://doi.org/10.1061/(asce)mt.1943-5533.0003625 Zobrazit plný text záznamu