Thermal insulation is a measure of the ability of a material to resist heat or cold transfer. Inside rooms built with clay and cement bricks, thermal insulation is measured by determining the thermal resistance or R-value of the walls and ceiling. R-value measures a material's resistance to heat transfer and is calculated based on the material's thermal conductivity, thickness, and density. Generally, higher R-values indicate better thermal insulation and more excellent resistance to heat transfer. The R-value of clay and cement bricks can vary depending on the composition, thickness, and density of the bricks. Clay bricks, for example, can range in R-value from 0.7 per inch to 2.6 per inch, while cement bricks can range from 0.3 to 1.3 per inch. The higher the R-value of the walls and ceiling, the better the thermal insulation of the room and the more excellent the resistance to heat transfer. In addition to measuring the R-value of the walls and ceiling, other factors must be considered when measuring the thermal insulation of a room built with clay and cement bricks. For example, the thermal bridges or thermal shorts between the bricks must be considered. Thermal shorts occur when two or more bricks in different temperatures come into contact with one another, allowing heat to transfer more quickly than it otherwise would. Thus, when measuring the thermal insulation of a room built with clay and cement bricks, these thermal bridges must be accounted for and factored into the overall R-value.
Thermal insulation inside rooms built with clay and cement bricks is measured by determining the walls' and ceiling's thermal resistance or R-value. This R-value measures the material's resistance to heat transfer and is calculated based on the material's thermal conductivity, thickness, and density. In addition, any thermal bridges or shorts that occur must be accounted for and factored into the overall R-value.
References:
Benson, P. (2013). Clay Bricks. Retrieved from https://www.theconstructor.org/building-materials/bricks/clay-bricks/2704/
Jensen, J., & Daukantas, P. (2019). Thermal Resistance: What Is It and What Are Its Benefits? Retrieved from https://www.buildings.com/news/industry-news/articleid/20664/title/thermal-resistance-what-is-it-and-what-are-its-benefits
Rehman, S., & Choudhary, B. (2014). Thermal Conductivity of Cement. Retrieved from https://www.azom.com/article.aspx?ArticleID=11639