Strength Characteristics of Clay-Rubber Waste Mixtures in UU Triaxial Tests
This paper presents results of undrained and unconsolidated (UU) triaxial tests related to the influence of tire waste addition on strength characteristics of red clay from Patoka in Southern Poland. Angle of internal friction and cohesion values were estimated for 30 specimens prepared from pure re...
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MDPI AG
2019-08-01
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| Series: | Geosciences |
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| Online Access: | https://www.mdpi.com/2076-3263/9/8/352 |
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| author | Małgorzata Jastrzębska |
| author_facet | Małgorzata Jastrzębska |
| author_sort | Małgorzata Jastrzębska |
| collection | DOAJ |
| description | This paper presents results of undrained and unconsolidated (UU) triaxial tests related to the influence of tire waste addition on strength characteristics of red clay from Patoka in Southern Poland. Angle of internal friction and cohesion values were estimated for 30 specimens prepared from pure red clay (RC), its mixtures with two different fractions of shredded rubber in 5%, 10%, and 25% mass proportions as well as for pure powder (P) and granulate (G). It has been observed that the addition of granulate contributes more to the increase in the angle of friction than the addition of powder (ΔΦ<sub>uu</sub> = +1% (G-5) / +16% (G-10) / +31% (G-25), ΔΦ<sub>uu</sub> = +1% (P-5) / +10% (P-10) / +19% (P-25)). On the other hand, rubber additions reduce cohesion in mixtures, and the effect is enhanced with increases in their grain size and percentage composition (Δc<sub>uu</sub> = −31% (G-5) / −63% (G-10) / −87% (G-25), Δc<sub>uu</sub> = −67% (P-5) / −58% (P-10) / −58% (P-25)). It has been noticed that a change of parameters Φ<sub>uu</sub> and c<sub>uu</sub> causes a decline of shear stresses at increasing granulate content. There is an inverse relationship for powder. At the same time, it has been shown that the failure strain, hence a change in red clay-rubber (RCR) mixtures plasticity, is related to the level of confining stress σ<sub>3</sub> and the type of rubber waste. Results of tests and their comparison with results of other researchers show that each time it is necessary to experimentally verify a given soil with specific rubber waste. |
| first_indexed | 2024-04-13T23:23:59Z |
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| language | English |
| last_indexed | 2024-04-13T23:23:59Z |
| publishDate | 2019-08-01 |
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| series | Geosciences |
| spelling | doaj.art-119c958580ee4c3c8625ca09390903582022-12-22T02:25:08ZengMDPI AGGeosciences2076-32632019-08-019835210.3390/geosciences9080352geosciences9080352Strength Characteristics of Clay-Rubber Waste Mixtures in UU Triaxial TestsMałgorzata Jastrzębska0Department of Geotechnics and Roads, Faculty of Civil Engineering, Silesian University of Technology, Akademicka 5, Gliwice 44-100, PolandThis paper presents results of undrained and unconsolidated (UU) triaxial tests related to the influence of tire waste addition on strength characteristics of red clay from Patoka in Southern Poland. Angle of internal friction and cohesion values were estimated for 30 specimens prepared from pure red clay (RC), its mixtures with two different fractions of shredded rubber in 5%, 10%, and 25% mass proportions as well as for pure powder (P) and granulate (G). It has been observed that the addition of granulate contributes more to the increase in the angle of friction than the addition of powder (ΔΦ<sub>uu</sub> = +1% (G-5) / +16% (G-10) / +31% (G-25), ΔΦ<sub>uu</sub> = +1% (P-5) / +10% (P-10) / +19% (P-25)). On the other hand, rubber additions reduce cohesion in mixtures, and the effect is enhanced with increases in their grain size and percentage composition (Δc<sub>uu</sub> = −31% (G-5) / −63% (G-10) / −87% (G-25), Δc<sub>uu</sub> = −67% (P-5) / −58% (P-10) / −58% (P-25)). It has been noticed that a change of parameters Φ<sub>uu</sub> and c<sub>uu</sub> causes a decline of shear stresses at increasing granulate content. There is an inverse relationship for powder. At the same time, it has been shown that the failure strain, hence a change in red clay-rubber (RCR) mixtures plasticity, is related to the level of confining stress σ<sub>3</sub> and the type of rubber waste. Results of tests and their comparison with results of other researchers show that each time it is necessary to experimentally verify a given soil with specific rubber waste.https://www.mdpi.com/2076-3263/9/8/352tire wasteclaycivil engineering constructionUU triaxial testshear strength of mixtures |
| spellingShingle | Małgorzata Jastrzębska Strength Characteristics of Clay-Rubber Waste Mixtures in UU Triaxial Tests Geosciences tire waste clay civil engineering construction UU triaxial test shear strength of mixtures |
| title | Strength Characteristics of Clay-Rubber Waste Mixtures in UU Triaxial Tests |
| title_full | Strength Characteristics of Clay-Rubber Waste Mixtures in UU Triaxial Tests |
| title_fullStr | Strength Characteristics of Clay-Rubber Waste Mixtures in UU Triaxial Tests |
| title_full_unstemmed | Strength Characteristics of Clay-Rubber Waste Mixtures in UU Triaxial Tests |
| title_short | Strength Characteristics of Clay-Rubber Waste Mixtures in UU Triaxial Tests |
| title_sort | strength characteristics of clay rubber waste mixtures in uu triaxial tests |
| topic | tire waste clay civil engineering construction UU triaxial test shear strength of mixtures |
| url | https://www.mdpi.com/2076-3263/9/8/352 |
| work_keys_str_mv | AT małgorzatajastrzebska strengthcharacteristicsofclayrubberwastemixturesinuutriaxialtests |