scholarly journals Mechanical Properties of Scrap Tire Crumbs-Clayey Soil Mixtures Determined by Laboratory Tests

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
ShanShan Li ◽  
Dayong Li
Keyword(s):  
Mechanical Properties ◽  
Laboratory Tests ◽  
Clayey Soil ◽  
Unit Weight ◽  
Direct Shear ◽  
Scrap Tire ◽  
Unconfined Compression Test ◽  
Fill Material ◽  
Soil Mixtures ◽  
Tire Crumbs

Some laboratory tests, such as Proctor compaction test, direct shear and cyclic direct shear tests, consolidation test, and unconfined compression test, were performed on scrap tire crumbs-clayey soil mixtures to study the mechanical properties of the mixtures. The results show that (1) the maximum dry unit weight and the corresponding optimum moisture content of the mixtures decrease rapidly with the increase of scrap tire crumbs content (CSTC), showing good potential for using the mixtures as lightweight fill material; (2) it is not possible to prepare the mixture when CSTC exceeds 30% due to the occurrence of cracks in the mixture after removing from a mould; and (3) the shear strength of mixtures approximately increases by 20% when CSTC is up to 30%, while the residual strength decreases by 15%, compared with that of pure clayey soil. During shearing, the dilation of the mixtures occurs, particularly under the condition of a high CSTC and a low vertical pressure. Besides, the compressive strength and consolidation settlement of the mixtures decrease with CSTC increasing. The results indicate that it is possible for scrap tire crumbs used to improve clayey soil, which is suitable to act as a fill material.

Geotechnical properties of tire-cohesive clayey soil mixtures as a fill material

2006 ◽  
Vol 88 (1-2) ◽  
pp. 110-120 ◽  
Author(s):  
Hasan Cetin ◽  
Mustafa Fener ◽  
Osman Gunaydin
Keyword(s):  
Clayey Soil ◽  
Geotechnical Properties ◽  
Fill Material ◽  
Soil Mixtures

scholarly journals Application of tire crumbs on mechanical properties of a clayey soil subjected to freeze-thaw cycles

2016 ◽  
Vol 23 (1) ◽  
pp. 122-132 ◽  
Author(s):  
M. Roustaei ◽  
M. Ghazavi ◽  
E. Aliaghaei
Keyword(s):  
Mechanical Properties ◽  
Clayey Soil ◽  
Freeze Thaw ◽  
Tire Crumbs

scholarly journals An Investigation on Mechanical Properties and Damping Behaviour of Hardened Mortar with Rubber Tire Crumbs (RTC)

2019 ◽  
Vol 258 ◽  
pp. 05002 ◽  
Author(s):  
Restu Faizah ◽  
Henricus Priyosulistyo ◽  
Akhmad Aminullah
Keyword(s):  
Mechanical Properties ◽  
Masonry Wall ◽  
Unit Weight ◽  
Building Structures ◽  
Ductile Materials ◽  
Masonry Construction ◽  
Rubber Tire ◽  
Strength And Stiffness ◽  
Tire Crumbs ◽  
Mechanical Strengths

Masonry wall has been used for ages as a part of non-engineered building structures, due to its ease of manufacture, strength, and stiffness to support gravity loads, but brittle enough to resist earthquake shake. One solution to increase its ductility when the earthquake shake stroked, ductile materials at bed joints that binding the masonries may apply. Mortar is a composite material consisting of sands, cement, and water that is generally used for masonry construction as a binder at bed joints. On the other hand, rubber has been used to isolate vibration of machinery because of its good damping behaviours. Those materials will be mixed and be elaborated to provide a ductile mortar binder at bed joints. This research aims to investigate the mechanical properties and the damping behaviour of hardened mortar with rubber tire crumbs at proportions of 0%, 40%, and 60%. Three types of specimens in forms of mortar cubes of 50x50x50 mm3, tensile specimens and mortar beams of 100x100x500 mm3 were tested to provide strength and damping behaviour. The addition of rubber tire crumbs in the mortar decreased the compressive strength, tensile strength, flexural strength and unit weight. Despite its weakness in the mechanical strengths, the addition of rubber tire crumbs could increase the damping behaviour significantly. This research recommended that mortar containing RTC is still appropriate use for non-structural component although it has low mechanical properties.

Field and laboratory behaviour of fine-grained soil stabilized with lime

2020 ◽  
Vol 57 (6) ◽  
pp. 933-938
Author(s):  
Nilo Cesar Consoli ◽  
Eduardo José Bittar Marin ◽  
Rubén Alejandro Quiñónez Samaniego ◽  
Hugo Carlos Scheuermann Filho ◽  
Nuno Miguel Cordeiro Cristelo
Keyword(s):  
Mechanical Properties ◽  
Laboratory Tests ◽  
Clayey Soil ◽  
Hydrated Lime ◽  
High Plasticity ◽  
Maintenance Costs ◽  
Fine Grained ◽  
Fine Grained Soil ◽  
First Time ◽  
Effective Procedures

Fine-grained soils, due to their high plasticity, possess great shrinkage potential and high compressibility and are responsible for very substantial maintenance costs during the service life of the associated infrastructures. Stabilization of such soils with lime is one of the most effective procedures to mitigate these undesirable characteristics and, at the same time, to enhance their mechanical properties. Current research seeks, through field and laboratory tests, to quantify the influence of calcitic hydrated lime on the strength and deflection characteristics clayey soil from the Paraguayan region of Chaco. The influence of different dry unit weights, lime amounts, and curing periods on the strength and deflection of a Paraguayan clay stabilized with lime was assessed. The present work shows, for the first time ever, that the porosity/lime index is the proper parameter to be used in the field when dealing with the strength of clay–lime bases of pavements. Hence, the results presented herein are a contribution to understanding the conditions in which these soils can be stabilized to be used in infrastructural applications.

The use of oil shale fly ash to improve the properties of Irbid soil

2018 ◽  
Vol 15 (5) ◽  
pp. 614-625 ◽  
Author(s):  
Abdulla A. Sharo ◽  
Ahmed Mohammed Ashteyat ◽  
Ahmed S. Alawneh ◽  
Bashar Ali Bany Khaled
Keyword(s):  
Laboratory Tests ◽  
Oil Shale ◽  
Expansive Soils ◽  
Swelling Pressure ◽  
Dry Weight ◽  
Unit Weight ◽  
Unconfined Compression Test ◽  
Stabilizing Agent ◽  
Content Type ◽  
Cbr Test

Purpose The purpose of this paper is to evaluate the possible use of oil shale as a soil stabilizing agent for expansive soils. Design/methodology/approach An experimental work has been fulfilled to investigate the influence of oil shale ash (OSA) on the geotechnical behavior of the expansive soil of Irbid, Jordan. Three swelling-shrinkage soils were considered in this study along with various percentages of OSA varying at 2, 4, 6, 8, 10 and 12 per cent by dry weight of the soil. A series of laboratory tests were conducted on the soil samples before and after mixing it with OSA. These tests were soil classification, Atterberg limits, compaction test, falling head permeability test, unconfined compression test, free swelling, swelling pressure and California bearing ratio (CBR) test. Findings Laboratory tests results indicated that OSA is effective in improving the texture and strength of the treated soil by reducing plasticity index, swelling potential and swelling pressure and moderately enhancing soil strength properties including the unconfined compressive strength (qu), maximum dry unit weight (γd-max.) and CBR test. Originality/value OSA showed potential as a low-cost soil stabilizing agent for swell-shrink soils.

scholarly journals Evaluation of the Shear Strength Behavior of TDA Mixed with Fine and Coarse Aggregates for Backfilling around Buried Structures

2021 ◽  
Vol 13 (9) ◽  
pp. 5087
Author(s):  
Hany El Naggar ◽  
Ali Iranikhah
Keyword(s):  
Large Scale ◽  
Clayey Soil ◽  
Earth Pressure ◽  
Shear Resistance ◽  
Unit Weight ◽  
Direct Shear ◽  
Clayey Soils ◽  
Buried Structures ◽  
Angle Of Internal Friction ◽  
Lateral Earth Pressure

Although some discarded tires are reused in various applications, a considerable number end up in landfills, where they pose diverse environmental problems. Waste tires that are shredded to produce tire-derived aggregates (TDA) can be reused in geotechnical engineering applications. Many studies have already been conducted to examine the behavior of pure TDA and soil-TDA mixtures. However, few studies have investigated the behavior of larger TDA particles, 20 to 75 mm in size, mixed with various types of soil at percentages ranging from 0% to 100%. In this study, TDA was mixed with gravelly, sandy, and clayey soils to determine the optimum soil-TDA mixtures for each soil type. A large-scale direct shear box (305 mm × 305 mm × 220 mm) was used, and the mixtures were examined with a series of direct shear tests at confining pressures of 50.1, 98.8, and 196.4 kPa. The test results indicated that the addition of TDA to the considered soils significantly reduces the dry unit weight, making the mixtures attractive for applications requiring lightweight fill materials. It was found that adding TDA to gravel decreases the shear resistance for all considered TDA contents. On the contrary, adding up to 10% TDA by weight to the sandy or clayey soils was found to increase the shear resistance of the mixtures. Adding up to 10% TDA by weight to the clayey soil also sharply increased the angle of internal friction from 18.8° to 32.3°. Moreover, it was also found that the addition of 25% TDA by weight to the gravelly or sandy soils can reduce the lateral earth pressure on buried structures by up to 20%. In comparison, adding 10% TDA to clay resulted in a 36% reduction in the lateral earth pressure.

LABORATORY TESTS OF THE PHYSICAL-MECHANICAL PROPERTIES OF MATERIALS FOR REMEDIAL JOBS

2020 ◽  
pp. 58-63
Author(s):  
M.A. Druzhinin ◽  
◽  
G.V. Okromelidze ◽  
O.V. Garshina ◽  
I.A. Kudimov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Laboratory Tests ◽  
Mechanical Properties Of Materials ◽  
Properties Of Materials

scholarly journals Mechanical properties of dental restorative materials: relative contribution of laboratory tests

2003 ◽  
Vol 11 (3) ◽  
pp. 162-167 ◽  
Author(s):  
Linda Wang ◽  
Paulo Henrique Perlatti D'Alpino ◽  
Lawrence Gonzaga Lopes ◽  
José Carlos Pereira
Keyword(s):  
Mechanical Properties ◽  
Laboratory Tests ◽  
Clinical Performance ◽  
Dental Materials ◽  
Correct Selection ◽  
Relative Contribution ◽  
Dental Restorative Materials ◽  
Restorative Materials ◽  
Dental Restorative ◽  
Selection Of

A wide variety of dental products that are launched on the market becomes the correct selection of these materials a difficult task. Although the mechanical properties do not necessarily represent their actual clinical performance, they are used to guide the effects of changes in their composition or processing on these properties. Also, these tests might help somehow the clinician to choose once comparisons between former formulations and new ones, as well as, with the leading brand, are highlighted by manufactures. This paper presents a review of the most important laboratory tests. In this manner, the knowledge of these tests will provide a critical opinion related to the properties of different dental materials.

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