Development and performance evaluation of self-leveling sand concrete: Enhanced fluidity, mechanical strength, durability, and non-destructive analysis

IF 7.4 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Construction and Building Materials Pub Date : 2025-02-18 DOI:10.1016/j.conbuildmat.2025.140463

Amel Bouabdallah , Abdelatif Benaissa , Moulaï Abdellah Bouabdallah , Souad Malab , Abdelwahhab Khatir

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引用次数: 0

Abstract

Initially, sand concrete has a firm consistency, making it challenging to implement. This study introduces the autonivelant (AN) coefficient, a novel fluidity parameter, to optimize the granular composition of sand concrete, resulting in the development of self-leveling sand concrete (SLSC). The fresh behavior of SLSC was evaluated using the spreading and T₅₀₀ tests, which allowed for the assessment of its plastic viscosity. The second part of the study investigates how the improved fresh-state characteristics influenced by the AN coefficient impact the durability of SLSC, particularly in terms of accelerated carbonation and chloride diffusion. The innovative properties of SLSC including enhanced fluidity and impressive compressive strength make it comparable to traditional structural concrete. Furthermore, SLSC demonstrates excellent resistance to CO₂ attack and chloride penetration, attributed to its high granular compactness optimized through the AN coefficient. A porosity study was also conducted, establishing a correlation with ultrasonic pulse velocity results to further assess concrete compactness and durability.

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来源期刊

Construction and Building Materials 工程技术-材料科学：综合

CiteScore

13.80

自引率

21.60%

发文量

3632

审稿时长

82 days

期刊介绍： Construction and Building Materials offers an international platform for sharing innovative and original research and development in the realm of construction and building materials, along with their practical applications in new projects and repair practices. The journal publishes a diverse array of pioneering research and application papers, detailing laboratory investigations and, to a limited extent, numerical analyses or reports on full-scale projects. Multi-part papers are discouraged. Additionally, Construction and Building Materials features comprehensive case studies and insightful review articles that contribute to new insights in the field. Our focus is on papers related to construction materials, excluding those on structural engineering, geotechnics, and unbound highway layers. Covered materials and technologies encompass cement, concrete reinforcement, bricks and mortars, additives, corrosion technology, ceramics, timber, steel, polymers, glass fibers, recycled materials, bamboo, rammed earth, non-conventional building materials, bituminous materials, and applications in railway materials.