Compression stress-strain curve of rammed earth: Measuring and modelling
This research article is about a study on the mechanical behavior of rammed earth under compression stress. The main purpose is to establish a simple stress-strain model for rammed earth. The tested rammed earthen materials are made of various local materials with different grain-size curves and gra...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-06-01
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| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123023001391 |
| _version_ | 1797802794570219520 |
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| author | A. Koutous E. Hilali |
| author_facet | A. Koutous E. Hilali |
| author_sort | A. Koutous |
| collection | DOAJ |
| description | This research article is about a study on the mechanical behavior of rammed earth under compression stress. The main purpose is to establish a simple stress-strain model for rammed earth. The tested rammed earthen materials are made of various local materials with different grain-size curves and grain shapes. Some of them are stabilized using cement and lime, or reinforced using barley straw and date palm fibers.The compression tests, the results of which are reported and analyzed in this article, were conducted in a monotonic manner on the produced cylindrical specimens at their almost dry state. For each compression test, the stress-strain curve is established, then the main mechanical characteristics are determined. These characteristics are the compressive strength, the initial tangent modulus, and the peak strain corresponding to the maximum compressive stress. Also, the secant modulus, defined as the ratio of the compressive strength to the peak strain, is calculated. Results: show that, for all the tested materials, stabilized or not, the stress-strain relationships observed can be modeled as quadratic polynomial. On the basis of this stress-strain model, the stress limit of the linear mechanical behavior of rammed earth was established. This stress limit, stated as a percentage of the compressive strength, depends on the ratio of the secant modulus to the initial tangent modulus, which themselves depend on the component materials used to manufacture the specimens. |
| first_indexed | 2024-03-13T05:11:04Z |
| format | Article |
| id | doaj.art-808b343dfd2144cba79ca74b57b3b806 |
| institution | Directory Open Access Journal |
| issn | 2590-1230 |
| language | English |
| last_indexed | 2024-03-13T05:11:04Z |
| publishDate | 2023-06-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj.art-808b343dfd2144cba79ca74b57b3b8062023-06-16T05:10:37ZengElsevierResults in Engineering2590-12302023-06-0118101012Compression stress-strain curve of rammed earth: Measuring and modellingA. Koutous0E. Hilali1Rural Engineering Department, Hassan II Institute of Agronomy and Veterinary Medicine, Rabat, 10112, Morocco; Corresponding author.MMGC Lab., National School of Applied Sciences, Ibn Zohr University, Agadir, 80000, MoroccoThis research article is about a study on the mechanical behavior of rammed earth under compression stress. The main purpose is to establish a simple stress-strain model for rammed earth. The tested rammed earthen materials are made of various local materials with different grain-size curves and grain shapes. Some of them are stabilized using cement and lime, or reinforced using barley straw and date palm fibers.The compression tests, the results of which are reported and analyzed in this article, were conducted in a monotonic manner on the produced cylindrical specimens at their almost dry state. For each compression test, the stress-strain curve is established, then the main mechanical characteristics are determined. These characteristics are the compressive strength, the initial tangent modulus, and the peak strain corresponding to the maximum compressive stress. Also, the secant modulus, defined as the ratio of the compressive strength to the peak strain, is calculated. Results: show that, for all the tested materials, stabilized or not, the stress-strain relationships observed can be modeled as quadratic polynomial. On the basis of this stress-strain model, the stress limit of the linear mechanical behavior of rammed earth was established. This stress limit, stated as a percentage of the compressive strength, depends on the ratio of the secant modulus to the initial tangent modulus, which themselves depend on the component materials used to manufacture the specimens.http://www.sciencedirect.com/science/article/pii/S2590123023001391Rammed earthMechanical behaviorStress-strain curveStress-strain lawLinear mechanical behavior |
| spellingShingle | A. Koutous E. Hilali Compression stress-strain curve of rammed earth: Measuring and modelling Results in Engineering Rammed earth Mechanical behavior Stress-strain curve Stress-strain law Linear mechanical behavior |
| title | Compression stress-strain curve of rammed earth: Measuring and modelling |
| title_full | Compression stress-strain curve of rammed earth: Measuring and modelling |
| title_fullStr | Compression stress-strain curve of rammed earth: Measuring and modelling |
| title_full_unstemmed | Compression stress-strain curve of rammed earth: Measuring and modelling |
| title_short | Compression stress-strain curve of rammed earth: Measuring and modelling |
| title_sort | compression stress strain curve of rammed earth measuring and modelling |
| topic | Rammed earth Mechanical behavior Stress-strain curve Stress-strain law Linear mechanical behavior |
| url | http://www.sciencedirect.com/science/article/pii/S2590123023001391 |
| work_keys_str_mv | AT akoutous compressionstressstraincurveoframmedearthmeasuringandmodelling AT ehilali compressionstressstraincurveoframmedearthmeasuringandmodelling |