A practical equation for elastic modulus of …

different crushed stone, howeve r, have revealed that unit. ... It is also found that the elastic modulus of concrete increases with an increase in the aggregate volume fraction, the elastic ...

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Relationship between Modulus of Elasticity and Strength …

The use of brick aggregate as a replacement of stone aggregate resulted reductions in unit weight, compressive strength, and modulus of elasticity of concrete by about 14.5%, 33%, and 28% ...

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(PDF) Title no. 106-S64 A Practical Equation for Elastic Modulus …

Specimens made of different crushed stone, however, have revealed that unit weight is not the only factor that produces different elastic ACI Structural Journal/September-October 2009 Table 1—Correction factors for coarse aggregate k1 Aggregate type River gravel 1.005 Crushed graywacke 1.002 Crushed quartzitic aggregate 0.931 Crushed ...

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Evaluation of Elastic Modulus of Crushed Stone Base Layers …

Preliminary results suggest that poor workmanship can be clearly identified and an increase in Elastic Modulus can be confirmed following the right construction methods and procedures. …

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Research on freeze resistance and life prediction of Desert …

The relative dynamic elastic modulus (Er) is defined as the ratio of the dynamic elastic modulus of the specimen after every 25 freeze–thaw cycles to the dynamic elastic modulus of the specimen before freeze–thaw. ... The Tuff crushed stone fine aggregate concrete exhibited a higher number of pores, but mixing a suitable quantity of desert ...

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DEFORMABILITY PROPERTIES OF ROCKS AND ROCK …

Using the theory of elastic wave propagation, the dynamic Young's modulus, Ed, Poisson's ratio WhatsApp: +86 18221755073

Normalized Shear Modulus of Compacted Gravel

properties of the gravel fill, such as nonlinear shear modulus, are required in seismic analyses to evaluate the response to dynamic loading. From a series of Resonant Column and Torsional Shear (RCTS) tests on two types of crushed gravel fill, normalized shear modulus reduction curves were obtained as a function of cyclic shear strain.

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Freeze–Thaw Damage Characterization of Cement-Stabilized Crushed Stone …

The skeleton dense graded cement-stabilized crushed stone base is a widely used material for road construction. However, this material is susceptible to freeze–thaw damage, which can lead to degradation and failure, for which there is still a lack of an in-depth understanding of the freeze–thaw damage characteristics. This study aims to assess the …

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EVALUATION OF ELASTIC MODULUS OF CRUSHED …

Definite increase in the elastic modulus despite irregular construction processes

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Failure characteristics analysis of crushed-stone-reinforced …

The increase in the crushed stone content increased the elastic modulus of the CSRP, and the crushed stone diameter had little effect on the elastic modulus and compressive strength of the CSRP. Under the conditions investigated in this study, the elastic modulus of the CSRP increased by 52% when the crushed stone content increased from 35% to 60%.

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Results of the modulus of rupture and the modulus of elasticity …

The average value and standard deviation of water absorption, compressive strength, modulus of elasticity, and rebound values were calculated for each type.

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Engineering Properties of Soil and Rock

Typical elastic modulus values of predominately granular materials are shown in Table 3. Table 3: Typical elastic modulus values for granular s oil (modified after Sabatini, 2002) . ... gravel • loose • medium dense • dense . 600 to 1,600 / (30,000 to 80,000) 1,600 to 2,000 / (80,000 to 100,000) 2,000 to 4,000 / (100,000 to 200,000)

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Calculation of static elastic modulus of concrete made with 10mm gravel

Download scientific diagram | Calculation of static elastic modulus of concrete made with 10mm gravel and quarry dust from publication: Elasticity and Durability of Concrete Made With Quarry Rock ...

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Resilient modulus of compacted crushed stone aggregate …

The main goal of this study was to establish a simple and efficient means of predicting the resilient modulus of different types of Kentucky crushed stone aggregate bases. To accomplish this purpose, resilient modulus of different tests were performed on several different types of aggregate bases commonly used in Kentucky.

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Strength characteristics of crushed gravel and limestone aggregates

The reduction in strength with an increase in PI and in each DR was only obvious for crushed gravel samples and crushed limestone samples with larger voids (i.e., C-CA 2). The reductions in soaked CBR at OMC for crushed gravel (except Sample G) and C-CA 2 samples were up to 35% and 16%, respectively, when PI was increased from 5% to 13%.

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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 considerably.

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AASHTO Pavement Thickness Design Guide

Crushed stone use k = 100 and kc = 150 for 6 to 12 in of thickness. Subgrade k Value ... Concrete properties – Modulus of Elasticity (Ec) and Modulus of Rupture (S'c). S'c is the 28 day Flexural Strength of the concrete. ...

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COMPARATIVE RESEARCH BETWEEN THE DYNAMIC AND STATIC ELASTICITY MODULI

COMPARATIVE RESEARCH BETWEEN THE DYNAMIC AND STATIC ELASTICITY MODULI OF GRADED CRUSHED STONE. The elasticity modulus is the important mechanics index and design parameter of graded curshed stone, whose value needs to be determined by middle-type dynamic triaxial tests. In this paper, the non-linear models of the dynamic and static moduli of ...

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Stress-strain relationships and modulus of elasticity of rocks …

Relatively small variations, when compared with modulus of elasticity, observed in the values of compressive strength of concrete with crushed stone (Table 9, Table 10, Table 11, Table 12) show that the quality of paste is much more important for strength than for stress-strain relationships and modulus of elasticity, where the influence of ...

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Relationship between compressive strength and …

Modulus of elasticity of concrete is a key factor for estimating the deformation of structural elements, as well as a fundamental factor for determining modu-lar ratio, n, which is used for the design of structural ... includes river gravel, crushed greywacke, etc. ;the second group, which requires correction factors of

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Long-Term Pavement Performance Program Determination …

Normal distribution of calculated elastic modulus for a crushed stone base aggregate. Conversely, figure 6 shows a bimodal distribution of results for the weathered soil layer at the Georgia 13 …

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Uniaxial compressive strength ( c) and deformation …

Clay schist / -stone 68 38 563 2 40 21 537 6 Micaschist 104 39 374 16 71 30 422 21 Gneiss 130 53 406 27 130 50 385 107 Micagneiss - - - - 89 29 330 5 Granitic gneiss - - - - 89 29 330 5 ... E-modulus and the factor m i in the Hoek-Brown failure criterion for rock masses Average values from tests Tests of rocks world

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Engineering Properties of Soil and Rock

(PMT), or Dilatometer (DMT) should be considered for evaluating the elastic modulus of the soil strata. Typical elastic modulus values of predominately granular materials are shown in Table 3.

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How can we measure the modulus of elasticity of crushed stone …

The measurement of modulus of elasticity in materials like crushed stone of any gradation, either for roadworks or other embankment or backfill operation, is linked to the Modulus of Subgrade ...

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Solved 1. You are designing an asphalt pavement …

The locally available asphalt concrete has an elastic modulus of 350, 000 psi at 6 8 ∘ F. The only available base material is crushed gravel with an elastic modulus of 25, 000 psi. Local custom is to construct all such highways with 12 inches of …

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Long-Term Pavement Performance Program Determination …

Normal distribution of calculated elastic modulus for a crushed stone base aggregate. Conversely, figure 6 shows a bimodal distribution of results for the weathered soil layer at the Georgia 13-1005 site. A bimodal distribution can reflect a change in the results caused by changing material properties or thickness deviations along the section ...

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Uniaxial compressive strength ( c) and deformation …

Clay schist / -stone 68 38 563 2 40 21 537 6 Micaschist 104 39 374 16 71 30 422 21 Gneiss 130 53 406 27 130 50 385 107 Micagneiss - - - - 89 29 330 5 Granitic gneiss - - - - 89 29 330 5 ... E …

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Dependence of the Deformation Modulus of Soil-Crushed-Stone …

The calculation of the elastic modulus is performed according to the formula: $$ E_{el} = frac{{0,75 cdot D cdot p_{max 1} }}{{S_{el} }}, $$ ... The deformation modulus of the soil-crushed-stone layer, presented in Table 6 can be used in the calculation of road pavements, provided that the moisture content of the soil in this layer is equal ...

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Mechanical Properties and Flexural Strength of Reinforced …

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 & Zong, 2014). This ...

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EVALUATION OF ELASTIC MODULUS OF CRUSHED …

EVALUATION OF ELASTIC MODULUS OF CRUSHED STONE BASE LAYERS FOR COMPACTION CONTROL. Jonathan Geldenhuys. 18 October 2022. Senior Resident Engineer. Hypothesis. Meticulous. construction process. SLUSHING. ... • 150mm G1 crushed stone base supported on a G2 subbase. Case Study 1. Inadequate processing – watering and mixing …

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Dependence of the Deformation Modulus of Soil …

Dependence of the Deformation Modulus of Soil-Crushed-Stone Layer 369. ... the values of the stamp modulus of deformation and elasticity of the soil of the models. Before the test, the surface of the subgrade was prepared, eliminating all inequalities and ﬁlling by dry sand. Next, a stamp was installed, ensuring its full ﬁtting to the soil

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Resilient Modulus of Compacted Crushed Stone Aggregate Bases

The compacted specimens were 6 in. in diameter and 12 in. in height Crushed limestone base materials included Dense Graded Aggregate (DGA), and Crushed Stone Base (CSB). Number 57s, crushed river gravel, recycled concrete, and asphalt drainage blanket samples were submitted for testing by engineers of the Kentucky Transportation Cabinet.

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StructX

Err on the side of caution. Soils and their inherent properties are varied as much as they are unpredictable. For those who are unfamiliar with soil investigation and testing procedures, soil theories or the limitations of capacity equations should use …

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Properties of higher strength concrete made with …

modulus of elasticity of the concrete were studied. The cylinder strength is found about 90% of ... obtained by replacing stone with an equal volume of crushed brick, everything else remaining the same. The present study reports primarily at to achieve higher strength concrete using crushed

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Effects of particle gradation and material proportions on the

By analyzing crushed stone aggregates with different material ratios, it is found that the addition of an appropriate amount of limestone can effectively enhance the resilience modulus of crushed stone aggregates, especially when the ratio of quartz to limestone is 3:1, the crushed stone aggregates show strong deformation resistance.

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Typical Values of Young's Elastic Modulus and …

This document provides an overview of the typical values of Young's Elastic Modulus and Poisson's Ratio for various pavement materials, highlighting how conditions such as moisture and fines content can influence these properties.

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(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 ...

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Elastic Modulus

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) … See more

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