Cement-Based Composites Incorporating Pseudoboehmite Nanomaterials

AbstractPseudoboehmite is a hydrated aluminum oxyhydroxide obtained from inorganic precursors by the sol-gel process. It is used as a precursor to alumina and as a reinforcement in obtaining nanocomposites. Cement-reinforced composites with this nanomaterial were obtained in concrete and mortar. Pse...

Full description

Saved in:
Bibliographic Details
Published in:Journal of materials in civil engineering 2023-02, Vol.35 (2)
Main Authors: Pacheco, Caroline Valadão, Peres, Renato Meneghetti, Carrieri, Gabriela, Minussi, Giulia Reis, Zambrana, Guido Prandini, Kang, Jessica Seong Hyun, Oliveira, Rene Ramos de, Lima, Nelson Batista de, Bernussi, Ayrton, Warzywoda, Juliusz, Munhoz, Antonio Hortencio
Format: Article
Language:English
Subjects:
Acrylic resins
Aluminum
Building materials
Cement reinforcements
Civil engineering
Compressive strength
Deflocculating
Mechanical tests
Mortars (material)
Nanocomposites
Nanomaterials
Precursors
Sodium
Sol-gel processes
Technical Papers
Workability
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:AbstractPseudoboehmite is a hydrated aluminum oxyhydroxide obtained from inorganic precursors by the sol-gel process. It is used as a precursor to alumina and as a reinforcement in obtaining nanocomposites. Cement-reinforced composites with this nanomaterial were obtained in concrete and mortar. Pseudoboehmite with sodium polyacrylate was used to promote a deflocculation of pseudoboehmite particles, which tend to agglomerate in the material. The obtained material was added to the concrete to improve its workability and strength. The new concrete was characterized by slump tests and mechanical tests. Our results revealed that the incorporation of pseudoboehmite with sodium polyacrylate significantly increased the compressive strength and improved the workability of the concrete. Multiple experiments evaluated compressive strength, ultrasound speed, and nanomaterial characterization. Using the Weibull method in mortars, we verified that the pseudoboehmite brought visible benefits as the characteristic stress increased by 17.5%. This increase was observed with the addition of 3% by weight of pseudoboehmite.
ISSN:0899-1561
1943-5533
DOI:10.1061/(ASCE)MT.1943-5533.0004586