What is it about?

Efflorescence is one of the most important problems facing clay bricks because of the environmental impact. This problem affects the brick quality and is consequently not easy to handle. In this research, we first used a new technique to evaluate efflorescence in a short time span, unlike the traditional method, which takes about 7 to 10 days to evaluate efflorescence levels. This method depends on the electrical conductivity of clay brick materials. Secondly, an electrical device was implemented for measuring efflorescence levels based on the proposed technique in this research. This technique provides sufficient data in a very short time (about 3 h) to assess efflorescence levels based on the electrical conductivity measurements.

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Why is it important?

This proposed technique gives the same results as the traditional testing method but would be preferred because it reduces the testing time to a very short period( about 3 h) and gives more details about efflorescence levels in bricks.


In this paper, our work is presented new evaluation method for the efflorescence phenomenon in clay bricks depending on the electrical conductivity in clay bricks materials. This method provides an accurate, fast, and economic assessment technique for the efflorescence measurement. This have been done by designing a novel, cheap and efficient electrical device which provided an accurate measurement for the salinity ratio, This device has significantly reduced the standard time for evolution efflorescence, from 7-10 days to about one to three hours. To best of our knowledge, this the first time for using electrical conductivity to assess efflorescence in clay bricks. Finally, we have got local patent for this work from the Central Organization for Standardization and Quality Control in Iraq (No. 5980- 2019).

Assist Prof. Salam Nazhan AL Zaidi
University of Diyala

Read the Original

This page is a summary of: New Technique and Manufactured Device for Determining the Efflorescence of Clay Brick Masonry, Advances in Civil Engineering Materials, April 2023, ASTM International,
DOI: 10.1520/acem20220040.
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