Abstract: In order to address the environmental issues caused by the massive stockpiling of granite weathered soil and explore pathways for its resource utilization,this study aimed to develop a frost-resistant non-fired brick using granite weathered soil as the primary raw material. Non-fired bricks were fabricated by the compaction method using granite weathered soil and commercially available P. O 525 cement as raw materials. The effects of weathered soil content,curing age,and iron content on frost resistance were systematically investigated. At a weathered soil-to-cement ratio of 1 ∶1,the fabricated non-fired bricks achieved a 28-day compressive strength of 24. 87 MPa,a softening coefficient of 97. 12%,and a frost resistance coefficient of 90. 66%,demonstrating excellent mechanical properties and frost durability. This research provides a feasible solution for the efficient resource utilization of granite weathered soil. The performance indicators of the developed non-fired bricks meet the requirements for building material applications,exhibiting significant environmental benefits and promising application prospects. 

Key words: weathered granite soil,unfired bricks,freeze resistance,resource utilization