C o n t a c t U s

2016-9-24 The modulus of elasticity varies from 0.5 MPa (for organic clays) to 320 MPa (for dense and well grades sand/gravels) [ 24, 30, 32 ]. In the present study, the modulus of elasticity of the 90 soils sample was determined and the results vary from 0.2 to 118.0 MPa with an average of 40.74 MPa.

2011-4-1 Micro-pores of size 16–24 μm were found on the outer surface of palm kernel shell. Infilling of pores by mineral admixtures was evident. Sand content influenced both modulus of elasticity and compressive strength. Proposed equation predicts modulus of elasticity within ±1.5 kN/mm 2

The input parameters in the developed ANN model are gravel, sand, fines, plastic limit, liquid limit, unit weight, and specific gravity, and the output is modulus of elasticity.

2001-1-30 The elastic properties of the Ottawa sand and kaolinite mixture are plotted versus the total porosity below. The non-uniqueness of the elastic moduli, and, especially, Poisson's ratio in the cross-plots is due to the grain-scale texture of the rock. 1 2 3 4 5 6 0.20 0.25 0.30 0.35 Elastic Moduli (GPa) Total Porosity Compressional Modulus Shear Modulus a.2.3

Moreover, it is widely used in dams, artificial foundations, storage yard of ports, flood control levees, roadbed, and engineering works for comprehensive treatment of urban river banks . Elasticity modulus is a key material parameter . It can be applied to calculate landslide mechanism and design support form of soil-rock mixture slope in slope-supported and underground engineering.

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The modulus of elasticity of intact rock (E) is an important rock property which is used as input parameter in the design stage of engineering projects such as slopes, tunnel and

To gauge the effect of CS as sand on the modulus of elasticity of concrete, Figure 4.16 has been developed from the data published recently (Jebitta and Sofia, 2015; Patil, 2015; Mithun and Narasimhan, 2016) and the established relationships between the modulus of elasticity and the characteristic cube strength in Eurocode 2 (2004). The concrete mixes tested all used natural coarse aggregate, and

Moreover the modulus of elasticity of RAC was on the average of 14% lower than that of NAC. Furthermore, the drying shrinkage and chloride ion penetration of RAC was on the average of

2020-7-1 Elasticity Modulus as a function of bulk density and compressive strength in the hardened stage guarantees coating mortar’s deformability to withstand the substrate stresses. The highest results were guaranteed by the continuous distribution of mortar mix design 1 and 2, due to the better packing of these distributions.

2000-11-19 This report refers to the determination of the Modulus of Elasticity Es in saturated of clay-silty sand mixtures. The experimental determination of Es is part of a research work, which determines the factor of strength and strain of the above material.

2001-1-30 4 0 10 20 30 40 50 60 0 0.2 0.4 0.6 0.8 1 Bulk Modulus (GPa) Porosity SOLID GLASS Frame-Supported Foam Disintegrated Foam Honeycomb Structure A critical porosity value exists which is typical for a given class of porous materials. Each class is defined on the basis of common mineralogy and/or diagenetic porosity reduction

2020-7-4 In many parts of the world, dams, hydroelectric power plants, tunnels, and highways have to be built in the regions where the weak rocks are dominant. In the solution of the above-mentioned geotechnical design problems, the elasticity modulus is an important parameter to be found. However, it is quite difficult to find the elastic modulus (E) values of highly porous low-strength rocks with

2019-1-29 The stress–strain curve and modulus of elasticity were recorded at the age of 28 days, whereas the other mechanical properties were measured at 91 days because of a large number of specimens. The air-dried and oven-dried densities of the concrete was recorded at the age of 28 days based on the procedure outlined in ASTM C138 ( 2012 ).

For this reason, the predictive models are useful tool for indirect estimation of elastic modulus. In this study, to determine the modulus of elasticity of soil, a rapid, less expensive, and reliable predictive model was proposed using artificial neural network (ANN).

2018-8-7 c= Static Modulus of Elasticity of Concrete, and E d= Dynamic Modulus of Elasticity of Concrete M. Conrad et al (2003) [22] investigated stress-strain behavior and modulus of elasticity of young Roller Compacted concrete from the ages of 6 hours to 365 days. They found that the Young's Modulus for the early

This study investigated the hardening process of alkali-activated material (AAM) mortar using calcium sulfoalumiante (CSA) expansive additive (CSA EA), which accelerates the initial reactivity of AAMs, and subsequent changes in ultrasonic pulse velocity (UPV). After the AAM mortar was mixed with three different contents of CSA EA, the setting and modulus of elasticity of the mortar at one day

2016-1-1 Free Online Library: Prediction of modulus of elasticity and compressive strength of concrete specimens by means of artificial neural networks/Previsao do modulo de elasticidade e da resistencia a compressao de corpos de prova de concreto por meio de redes neurais artificiais.(texto en ingles) by "Acta Scientiarum. Technology (UEM)"; Science and technology, general Artificial neural networks

2016-2-25 Key Words: Artificial neural network, multivariable regression, unconfined compressive strength, Modulus of Elasticity 1. Introduction Foundation of various civil engineering structures such as roads, bridges, tunnels, dams, harbors and high rise buildings are constructed up to natural rock beds. Therefore, it becomes important to

2021-1-15 strain curve is a straight line, the usual method of determining the modulus of elasticity is to measure the tangent modulus, which is defined as the slope of the tangent to the stress-strain 16. Take instantaneous measurements using the digital mechanical gage immediately after loading. Then take the measurements in 1 hour, 3 hours and 6 hours.

by a higher value of the elasticity modulus. The flexural modulus of elasticity increased from 385 MPa to 1003 MPa and the elongation at rupture decreased from 241% to 70%. The artificial turf structure, indicated as M1003, had a different behaviour compared to the previous one, indicated as M385.

2019-6-3 energies Article Estimation of Static Young’s Modulus for Sandstone Formation Using Artiﬁcial Neural Networks Ahmed Abdulhamid Mahmoud 1, Salaheldin Elkatatny 1,*,Abdulwahab Ali 2 and Tamer Moussa 1 1 College of Petroleum Engineering and Geosciences, King Fahd University of Petroleum & Minerals, Dhahran 31261, Saudi Arabia; [email protected] (A.A.M.);

2019-1-29 The stress–strain curve and modulus of elasticity were recorded at the age of 28 days, whereas the other mechanical properties were measured at 91 days because of a large number of specimens. The air-dried and oven-dried densities of the concrete was recorded at the age of 28 days based on the procedure outlined in ASTM C138 ( 2012 ).

The production processes of ordinary Portland cement (OPC), accompanying with bad environment influences such as, huge energy consumption, greenhouse gases emissions and natural resource exploitation; but fly ash-based geopolymer concrete is produced without (OPC), yet that has many sustainable environment benefits. In this study locally artificial lightweight aggregate was used to

2016-7-20 modulus of elasticity are compared with a theoretical model based on the law of mixtures. Literature survey reveals that the ductility of cement cement, sand and coarse aggregate with a water cement ratio of 0.58 by weight was used throughout the investigation. Cubes of

2018-8-7 c= Static Modulus of Elasticity of Concrete, and E d= Dynamic Modulus of Elasticity of Concrete M. Conrad et al (2003) [22] investigated stress-strain behavior and modulus of elasticity of young Roller Compacted concrete from the ages of 6 hours to 365 days. They found that the Young's Modulus for the early

The maximum modulus of rupture (85 MPa) and modulus of elasticity (3284 MPa) were achieved for 10% silica concentration. For epoxy/crystalline silica composite; the water absorption and thickness swelling were also not significantly different with silica concentration, ranged from 0.08% to 0.11% and 0.16% to 0.18% respectively.

2016-1-1 Free Online Library: Prediction of modulus of elasticity and compressive strength of concrete specimens by means of artificial neural networks/Previsao do modulo de elasticidade e da resistencia a compressao de corpos de prova de concreto por meio de redes neurais artificiais.(texto en ingles) by "Acta Scientiarum. Technology (UEM)"; Science and technology, general Artificial neural networks

The dynamic stress-strain relationship of artificial frozen silty clay under one-dimensional coupled static and dynamic loads is obtained using modified split Hopkinson pressure bar (SHPB) equipment. The variation in dynamic compressive strength, dynamic deformation modulus, energy dissipation, and failure mode of artificial frozen silty clay with axial precompressive stress ratio are studied

2016-9-29 5.3.Elasticity: Stress and Strain • State Hooke’s law. • Explain Hooke’s law using graphical representation between deformation and applied force. • Discuss the three types of deformations such as changes in length, sideways shear and changes in volume. • Describe with examples the young’s modulus, shear modulus and bulk modulus.

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