4.6 Article

Studies on the Ageing of Cement Stabilized Rammed Earth Material in Different Exposure Conditions

Journal

MATERIALS
Volume 15, Issue 3, Pages -

Publisher

MDPI
DOI: 10.3390/ma15031090

Keywords

rammed earth; cement stabilized rammed earth; durability; compressive strength; development; seasoning conditions; natural weather conditions

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This study aims to test the deterioration of cement stabilized rammed earth in natural weather conditions and describe its long-term properties. The results show that despite minimal wear in appearance, the strength characteristics of the material deteriorate under natural weather conditions, especially in specimens with high cement content.
This paper aims to test the deterioration of cement stabilized rammed earth and consider its characteristics during its lifespan in various exposure conditions. Both visual and mechanical properties were tested to determine the impact of long-term exposure to natural weather conditions. Cemented stabilized rammed earth is a variation of the traditional rammed earth building material which has been used since ancient history and is strengthened by the addition of stabilizers in the form of Portland cement. This article analyzes the long-term properties of wall panels made of this material, which were subjected to varying exposure conditions for five years. After this period, compression tests of specimens cut from panels stored in various environmental conditions were carried out. Based on the results and visual properties of the specimens, long-term changes in unconfined compressive strength were observed and primary durability attributes were described. Despite minimal visible wear to the external layers of the wall panels, the natural weather conditions proved to deteriorate material strength characteristics, especially on specimens with high cement content. No correlation between visual characteristics and compressive strength measures were found. The present study is vital in adequately describing cement stabilized rammed earth behavior in natural weather conditions typical of a humid continental climate.

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