elastic modulus of crushed stone

Estimating resilient modulus of base aggregates for mechanistic

This paper presents an evaluation of the performance of existing materials models in predicting the resilient modulus of base layer aggregates using a repeated load triaxial test database from Wisconsin and Kentucky and involving gravel/crushed gravel and crushed stone. In addition, three new materials models were developed, based on …

Mechanical Properties and Flexural Strength of

On the other hand, concrete elastic modulus of specimens containing crushed brick increase as the replacement percentage increased due to their stronger particles as compared to rubber and plastic waste particles. However a reduction in the elastic modulus was observed by others (Cachim, 2009; Uddin et al., 2017; Zhang & …

Investigation on the effects of physical property and stress state of

The graded crushed stone layer of flexible asphalt pavement is a kind of typical elastic–plastic material. The current research focus is concentrated on the improvement of strength and stability to reduce permanent deformation. ... It could be seen that the resilient modulus of graded crushed stone with OMC-2% is all higher than that …

Engineering Properties of Soil and Rock

01-15-14 05-19-15 This section provides guidance on selecting soil and rock engineering properties for use in geotechnical design. Quick Tips: The geotechnical designer is …

Geotechnical Aspects of Pavements Reference Manual

Dense graded crushed stone: 80+ High compressibility silts: 15 - 30 For the AASHO Road Test, R ≈ 85 for the granular base layer and about 60 for the granular subbase. ... The elastic modulus for unbound pavement materials is most commonly characterized in terms of the resilient modulus, M R. The resilient modulus is defined as the ratio of ...

Estimating the Shear Modulus of Gravelly Soils | Journal of

A special large-scale torsional resonant column apparatus was used to test gravelly soils. Values of small strain elastic shear modulus (G max) and modulus reduction relationships [shear modulus (G) versus shear strain (γ)] were measured for specimens of uniform and graded crushed limestone gravel, graded river gravel, …

Typical Values of Young's Elastic Modulus and …

Typical Values of Young's Elastic Modulus and Poisson's Ratio for Pavement Materials Young's Elastic Modulus Poisson's Ratio Material …

Microstructure and micromechanical properties of

The elastic modulus and hardness of ITZ in GRAC with crushed concrete are higher than those of ITZ in GRAC with unbound stone and crushed brick. This can be attributed to the high amount of C-A-S-H gels (60%) in GRAC containing crushed concrete that of the GRAC with unbound stone (6.67%) and crushed brick (13.33%).

Determination of Modulus of Soil Reaction From Standard …

The modulus of elasticity can be determined from Eq. 4 as E _ '"a (1 - us2) P s - 26. {5) For an ideal elastic material, E will be constant. This is not the case with soil be ... same depth into a standard sample of crushed stone. CBR (%) = unit load on plunger (psi) x 100 standard unit load (psi) (8)

Strength and abrasive properties of andesite: relationships

Cylindrical specimens and aggregate samples with 10.0/14.0-mm-sized grains were made from rock blocks. The specimens were tested in dry, water-saturated and freeze–thaw subjected conditions. Bulk density, uniaxial compressive strength, modulus of elasticity, indirect tensile strength and water absorption were measured.

Stress-strain relationships and modulus of elasticity

Static modulus of elasticity of concrete in axial compression is typically applicable at stresses up to 0.33fc [1] or 0.4f c [2], [3], that is, at the levels lower than the …

Effect of Stone Powder Content on Mechanical Properties of

To study the effect of stone powder content on the basic mechanical properties of mechanism sand concrete, the effect of stone powder content of 0%, 3%, 5%, 7%, 9%, 12%, and 15% on the cube compressive strength, axial compressive strength, splitting tensile strength, and modulus of elasticity of mechanism sand concrete was …

(PDF) ELASTIC PROPERTIES OF ROCKS

As shown in Table 1, values of Young's modulus of the stone masonry walls (as a whole) range between 1.6 GPa and 3 GPa, while Young's modulus of the involved stone ranges at least from 5-10 GPa ...

Lightweight aggregate concrete produced with crushed stone …

2. Materials and methods. LWA having a unit weight of 1536 kg/m 3 and limestone crushed aggregate having a maximum size of 19 mm, procured from a local aggregate crushing facility were used as LWA and NWA, respectively. Locally produced crushed stone sand having fineness modulus of 4.18 was used as fine aggregate.

Elastic Modulus – Pavement Interactive

The nomenclature and symbols from the 1993 AASHTO Guideis generally used in referring to pavement moduli. For example: 1. EAC = asphalt concreteelastic modulus 1. E BS = base course resilient modulus 1. ESB= subbase course resilient modulus 1. MR (or ESG) = roadbed soil (subgrade) resilient …

DEFORMABILITY PROPERTIES OF ROCKS AND ROCK …

Using the theory of elastic wave propagation, the dynamic Young's modulus, Ed, Poisson's ratio

Recommendations for the design, calculation, construction …

Gravel backfill (1) The gravel backfill must be of high quality, and its particle size must be as homogeneous as possible. (2) In most cases natural, pea gravel or crushed stone gravel is used. Comment 1: Except in the case of specific docu mentation showing an absence of short and long-term problems (expansion, pollution, physical-chemical ...

INVESTIGATIONS ON ELASTIC MODULUS OF CRUSHED GRAVEL …

The benefits of reduced density and increased elastic modulus, characteristic of aluminum-lithium based alloys, have been quickly and widely recognised, and in-depth evaluation of the material has ...

Subgrade – Pavement Interactive

A simple test that compares the bearing capacity of a material with that of a well-graded crushed stone (thus, a high quality crushed stone material should have a CBR of about ). CBR is basically a measure of strength. ... A test used to estimate elastic modulus (a material's stress-strain relationship). The resilient modulus test applies ...

Evaluation of Modulus of Elasticity and Modulus of Subgrade …

value of E (modulus of elasticity) chosen from 1.00E+6Pa until 1.00E+7 Pa for finding the load deflection curves. From these, the load penetration of 2.5mm of the CBR plunger (of 50.8 mm diameter) is chosen for the determina-tion of …

Failure characteristics analysis of crushed-stone-reinforced …

With an increase in the crushed stone content, the elastic modulus increased approximately linearly, and the compressive strength decreased; however, the decrease was slow. When the crushed stone content increased from 35% to 60%, the elastic modulus of the CSRP increased by 52%, and the compressive strength …

The effects of limestone aggregate on concrete properties

The results show the increases in the compressive and flexural strengths and modulus of elasticity when the fine limestone proportion increases in the mixture. The most outstanding results are found on the drying shrinkage, which decreases considerably with the increase in fine limestone proportions. ... Crushed stone types in the United States ...

(PDF) Test Results of the Modulus of Elasticity of Concretes with

The results of tests of the modulus of elasticity and compressive strength of concrete with a wide range of w/c ratio from 0.70 to 0.28 made with 10 types of coarse aggregates made of igneous ...

Crushed Stone

Crushed stone can generally substitute for sand and gravel, and vice versa. There are only a few naturally occurring materials that have the properties necessary to make an in-kind replacement for aggregate. ... The EN 13286-43 standard [30] provides guidelines in which the elastic modulus in compression is calculated using a force equal to 30% ...

Investigations on the elasticity modulus of stone masonry

The modulus of elasticity of masonry is one of the main parameters used both in the assessment of the existing structures and in the design of new ones. The current practice in determining the modulus of elasticity of this type of structural material comprises significant uncertainties, which in turn affect the results of structural analysis ...

Investigation on the effects of physical property and stress state of

The graded crushed stone layer of flexible asphalt pavement is a kind of typical elastic–plastic material. The current research focus is concentrated on the improvement of strength and stability to reduce permanent deformation. Total deformation is commonly composed of recoverable elastic deformation and unrecoverable plastic …

California Bearing Ratio – Pavement Interactive

The California Bearing Ratio (CBR) test is a simple strength test that compares the bearing capacity of a material with that of a well-graded crushed stone (thus, a high quality crushed stone material should have a CBR @ ). It is primarily intended for, but not limited to, evaluating the strength of cohesive materials having maximum ...