This paper reviews the use of waste brick powder (WBP) as a supplementary cementitious material (SCM) in mortar and concrete. The study evaluates the impact of WBP on the mechanical and durability properties of these materials, focusing on factors such as particle size, replacement ratio, pozzolanic activity, and mineralogical structure. Key findings include: 1. **Compressive Strength**: WBP with particle sizes ranging from 100 μm to 25 μm and replacement ratios up to 10–20% positively affect the compressive strength of mortar and concrete. However, the strength decreases with increasing WBP content at early ages but improves with curing time. 2. **Pozzolanic Activity and Mineralogical Structure**: WBP satisfies the criteria for pozzolanic activity (Si₂O + Al₂O₃ + Fe₂O₃ ≥ 70%). The microstructure of WBP is irregular, with a rough surface and angular structure. The pozzolanic reaction forms additional C-S-H phases, improving pore size and compactness. 3. **Durability Properties**: - **Water Absorption**: WBP reduces water absorption by enhancing the compactness of mortar and concrete, especially at substitution rates of up to 15% in mortar and 10–20% in concrete. - **Drying Shrinkage**: WBP reduces drying shrinkage by improving the pore structure and reducing capillary pores. - **Resistance to Chloride Attack**: WBP enhances resistance to chloride ion penetration, with 20% WBP substitution in mortar and 30% in concrete showing near-zero chloride permeability. - **Resistance to Sulfate Attack**: WBP improves sulfate resistance, mitigating strength loss in mortars and concretes. 4. **Life Cycle Assessment (LCA)**: WBP substitution reduces global warming potential and CO₂ emissions, making it a sustainable alternative to traditional cement. The study concludes that WBP is a promising material for reducing environmental impact, energy consumption, and costs in the construction industry. Further research is needed to optimize WBP replacement ratios and investigate thermal and acoustic properties.This paper reviews the use of waste brick powder (WBP) as a supplementary cementitious material (SCM) in mortar and concrete. The study evaluates the impact of WBP on the mechanical and durability properties of these materials, focusing on factors such as particle size, replacement ratio, pozzolanic activity, and mineralogical structure. Key findings include: 1. **Compressive Strength**: WBP with particle sizes ranging from 100 μm to 25 μm and replacement ratios up to 10–20% positively affect the compressive strength of mortar and concrete. However, the strength decreases with increasing WBP content at early ages but improves with curing time. 2. **Pozzolanic Activity and Mineralogical Structure**: WBP satisfies the criteria for pozzolanic activity (Si₂O + Al₂O₃ + Fe₂O₃ ≥ 70%). The microstructure of WBP is irregular, with a rough surface and angular structure. The pozzolanic reaction forms additional C-S-H phases, improving pore size and compactness. 3. **Durability Properties**: - **Water Absorption**: WBP reduces water absorption by enhancing the compactness of mortar and concrete, especially at substitution rates of up to 15% in mortar and 10–20% in concrete. - **Drying Shrinkage**: WBP reduces drying shrinkage by improving the pore structure and reducing capillary pores. - **Resistance to Chloride Attack**: WBP enhances resistance to chloride ion penetration, with 20% WBP substitution in mortar and 30% in concrete showing near-zero chloride permeability. - **Resistance to Sulfate Attack**: WBP improves sulfate resistance, mitigating strength loss in mortars and concretes. 4. **Life Cycle Assessment (LCA)**: WBP substitution reduces global warming potential and CO₂ emissions, making it a sustainable alternative to traditional cement. The study concludes that WBP is a promising material for reducing environmental impact, energy consumption, and costs in the construction industry. Further research is needed to optimize WBP replacement ratios and investigate thermal and acoustic properties.