E-ISSN 2705-3954 | ISSN 0794-4756
 

Original Research 


THERMAL CHARACTERISTICS OF METAKAOLIN-BLENDED HOLLOW SANDCRETE BLOCKS

OLA KAMIYO.

Abstract
Sand-cement hollow blocks are widely applied in building construction in most countries. Attempt to lower the high costs of the material constituents, as well as the desire to enhance properties, has led to the substitution of the constituents with different admixtures. Thermophysical properties of most cementitious materials are found to change with the quantity of admixtures. One of the commonly used admixtures is metakaolin. This study investigates the thermal characteristics of hollow sandcrete blocks produced with metakaolin-blended cement. The replacement of cement with metakaolin is varied in steps of 5% to a maximum of 30% by volume. The results show increasing heat transfer rate, heat energy storing capacity and thermal mass with the mekaolin content. Time-response properties such as thermal admittance and thermal effusivity rise while most of the insulating properties reduce with increasing metakaolin substitution. The results show the potential use of metakaolin-based blocks for building applications should be with caution

Key words: Metakaolin, cement, admixtures, sandcrete blocks, thermal properties


 
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How to Cite this Article
Pubmed Style

KAMIYO O, . THERMAL CHARACTERISTICS OF METAKAOLIN-BLENDED HOLLOW SANDCRETE BLOCKS. NJE. 2021; 28(2): 15-21.


Web Style

KAMIYO O, . THERMAL CHARACTERISTICS OF METAKAOLIN-BLENDED HOLLOW SANDCRETE BLOCKS. http://www.njeabu.com.ng/?mno=9653 [Access: September 08, 2021].


AMA (American Medical Association) Style

KAMIYO O, . THERMAL CHARACTERISTICS OF METAKAOLIN-BLENDED HOLLOW SANDCRETE BLOCKS. NJE. 2021; 28(2): 15-21.



Vancouver/ICMJE Style

KAMIYO O, . THERMAL CHARACTERISTICS OF METAKAOLIN-BLENDED HOLLOW SANDCRETE BLOCKS. NJE. (2021), [cited September 08, 2021]; 28(2): 15-21.



Harvard Style

KAMIYO, O. & (2021) THERMAL CHARACTERISTICS OF METAKAOLIN-BLENDED HOLLOW SANDCRETE BLOCKS. NJE, 28 (2), 15-21.



Turabian Style

KAMIYO, OLA, and . 2021. THERMAL CHARACTERISTICS OF METAKAOLIN-BLENDED HOLLOW SANDCRETE BLOCKS. Nigerian Journal of Engineering, 28 (2), 15-21.



Chicago Style

KAMIYO, OLA, and . "THERMAL CHARACTERISTICS OF METAKAOLIN-BLENDED HOLLOW SANDCRETE BLOCKS." Nigerian Journal of Engineering 28 (2021), 15-21.



MLA (The Modern Language Association) Style

KAMIYO, OLA, and . "THERMAL CHARACTERISTICS OF METAKAOLIN-BLENDED HOLLOW SANDCRETE BLOCKS." Nigerian Journal of Engineering 28.2 (2021), 15-21. Print.



APA (American Psychological Association) Style

KAMIYO, O. & (2021) THERMAL CHARACTERISTICS OF METAKAOLIN-BLENDED HOLLOW SANDCRETE BLOCKS. Nigerian Journal of Engineering, 28 (2), 15-21.