THERMAL SCIENCE

International Scientific Journal

Zhengjiang Wang

,

Yang Yang

,

Yan Su

,

Jing Wang

,

Zhongping Wei

,

Yajuan Li

,

Jiawei Li

,

Chao Zhu

DAMAGE MECHANISM OF CONCRETE WITH RECYCLED BRICK AGGREGATE

ABSTRACT
WIt has great environmental potential to replace natural aggregates by recycled brick aggregates. To investigate the deterioration mechanism of recycled brick aggregate concrete, this paper designed eight groups of recycled brick aggregate sub-lightweight concrete with different water-cement ratios, maximum aggregate sizes and coarse aggregate type ratios, and carried out mechanical property test to analyze the aggregate interface characteristics and the damage mechanism of recycled brick aggregate concrete. The results show that the increase of replacement ratio and water-cement ratio leads to a significant decrease of compressive strength and splitting tensile strength of concrete, and the influence of the maximum aggregate size on strength is small. Unlike the recycled concrete aggregate - mortar interface, the microstructure of recycled brick aggregate - mortar interface is dense and the interface performance is enhanced. Recycled brick aggregate concrete is in non-interface damage mode, and the strength of brick aggregate is the main influence to determine the mechanical properties of concrete factor.
KEYWORDS
construction waste, recycled clay brick aggregate, mechanical properties, failure mechanism
PAPER SUBMITTED: 2022-02-01
PAPER REVISED: 2022-07-14
PAPER ACCEPTED: 2022-07-14
PUBLISHED ONLINE: 2023-06-11
DOI REFERENCE: https://doi.org/10.2298/TSCI2303145W
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2023, VOLUME 27, ISSUE Issue 3, PAGES [2145 - 2153]
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Damage mechanism of concrete with recycled brick aggregate

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence