Work

Rice husk ash reduces damage rate of CEB under uniaxial compression

Year: 2025

Type: article

Abstract: To address the current environmental challenges of reducing atmospheric pollutants and contributing to recycling, this work reuses waste residues from the agroindustrial sector for manufacturing compressed earth blocks (CEBs). The main objective of this study is to evaluate rice husk ash (RHA) stabilizer as damage rate reducer in CEBs under uniaxial compressive loads. The methodology includes the fabrication of cylindrical samples of CEB densified at a pressure of 10 MPa using a laboratory compactor. The samples are tested in uniaxial compressive loadings using a universal testing machine to produce failure. The CEB samples without RHA are compared to the samples showing maximum strength manufactured with RHA. The experimental engineering stress-strain curves were analyzed to determine the damage rate as a function of strain. The results show that incorporating RHA as a stabilizer reduces the damage rate of compressed earth blocks (CEB) under uniaxial compression from 3.04 to 0.36, representing an 88% reduction.

Source: Procedia Structural Integrity

DOI: 10.1016/j.prostr.2025.06.070

Authors: Marian Valenzuela, Víctor Tuninetti, Gustavo Ciudad, Shady Attia

Institutions: Universidad de La Frontera, University of Liège

Language: English

Topic: Hygrothermal properties of building materials

Subfield: Building and Construction

Field: Engineering

Domain: Physical Sciences

SDGs: Responsible consumption and production, Industry, innovation and infrastructure

Open Access status: diamond

Funders: Universidad de La Frontera, Agencia Nacional de Investigación y Desarrollo