Next Article in Journal
Diagnostics and Mapping of Geoecological Situations in the Permafrost Zone of Russia
Previous Article in Journal
Practical Tips for 3D Regional Gravity Inversion
Article

Strength Characteristics of Clay-Rubber Waste Mixtures in UU Triaxial Tests

Department of Geotechnics and Roads, Faculty of Civil Engineering, Silesian University of Technology, Akademicka 5, Gliwice 44-100, Poland
Geosciences 2019, 9(8), 352; https://doi.org/10.3390/geosciences9080352
Received: 5 July 2019 / Revised: 31 July 2019 / Accepted: 8 August 2019 / Published: 10 August 2019
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 (ΔΦuu = +1% (G-5) / +16% (G-10) / +31% (G-25), ΔΦuu = +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 (Δcuu = −31% (G-5) / −63% (G-10) / −87% (G-25), Δcuu = −67% (P-5) / −58% (P-10) / −58% (P-25)). It has been noticed that a change of parameters Φuu and cuu 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 σ3 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. View Full-Text
Keywords: tire waste; clay; civil engineering construction; UU triaxial test; shear strength of mixtures tire waste; clay; civil engineering construction; UU triaxial test; shear strength of mixtures
Show Figures

Figure 1

MDPI and ACS Style

Jastrzębska, M. Strength Characteristics of Clay-Rubber Waste Mixtures in UU Triaxial Tests. Geosciences 2019, 9, 352. https://doi.org/10.3390/geosciences9080352

AMA Style

Jastrzębska M. Strength Characteristics of Clay-Rubber Waste Mixtures in UU Triaxial Tests. Geosciences. 2019; 9(8):352. https://doi.org/10.3390/geosciences9080352

Chicago/Turabian Style

Jastrzębska, Małgorzata. 2019. "Strength Characteristics of Clay-Rubber Waste Mixtures in UU Triaxial Tests" Geosciences 9, no. 8: 352. https://doi.org/10.3390/geosciences9080352

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop