Relationship Between Compressive Strength and Modulus of Elasticity of High Strength Concrete

Noguchi, Takafumi; Tomosawa, Fuminori

doi:10.3130/aijs.60.1_8

Cited by 32 publications

(14 citation statements)

References 1 publication

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“…Despite performing a linear regression analysis (R 2 =0.95) no meaningful interpretation could be obtained from correlating the two parameters.Density of the mortars on the other hand, seems to exhibit no pattern, at all, either with regard to quantity of lime in the mortar or with ultrasound pulse velocity.From the behavioural knowledge of concrete, it is known that E-modulus (E) is often expressed as a function of density () and compressive strength (f c ) i.e. ( a f c b ) with varying values of exponents (a and b)[39,40]. The exponent usually used for compressive strength is 0.5, whereas the exponent used for density may vary.…”

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confidence: 99%

Mechanical properties of lime–cement masonry mortars in their early ages

Ramesh

Azenha

2019

Mater Struct

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Lime-cement mortars are often used in restoration of existing buildings (especially twentieth century onward) as well as new constructions, in order to combine the individual strengths of either type of binder. Despite the knowledge that mortars have a significant impact on the non-linear mechanical behaviour of masonry from the earliest moments of construction, literature that systematically quantifies the impact of adding lime to cement mortars, or vice versa is scarce and scattered. This work is therefore focussed on bridging the research gap that exists in lime-cement masonry mortars with regard to their mechanical properties in the early ages (up to 7 days of curing). Five different mix compositions have been studied with 1:3 binder-aggregate ratio and 10% to 75% lime content in the binder, both by volume. Changes in properties like mechanical strength and stiffness along with ultrasound pulse velocity have been quantified, correlated and associated with change in quantity of lime in the binder (by volume) of the mortar. It was found that every 10% increase in the quantity of lime in the binder led to a 14% decrease in mechanical strength and a corresponding 12% decrease in stiffness, at 7 days of curing age. Emodulus was found to evolve faster than flexural strength, which in turn was found to evolve faster than compressive strength. Impact of curing temperature and the concept of activation energy has been addressed for the mix 1:1:6 (Cement: Lime: Sand).

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confidence: 99%

Mechanical properties of lime–cement masonry mortars in their early ages

Ramesh

Azenha

2019

Mater Struct

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“…The model are built by 29774 nodes with automatic mesh initially and then refined mesh. For high strength concrete, the value of modulus elasticity is derived from Equation 1 according to modified equation (Noguchi and Nemati, 1991) as follow:…”

Section: Numerical Modelingmentioning

confidence: 99%

“…Lertsrisakulrat et al (2002) investigated a compressive failure of concrete in RC deep beams. Relationship between the compressive strength and modulus of elasticity of high-strength concrete is determined by Noguchi and Nemati (1991). Wu (2006) and Carrasquillo et al (1981) investigated behavior of HSC members under various types of loading.…”

Section: Introductionmentioning

confidence: 99%

ANSYS Numerical Modeling of Confined Deep Beam with High Strength Concrete

Taufik¹,

Anggarini²,

Setiawan³

2020

International Journal of Structural Glass and Advanced Material

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In the numerical modeling presented, the deep beam is accounted for by means of a three dimensional FEA ANSYS 13.0 approach, in which the structure is modeled with load-displacement-based solid finite elements, whereas the internal work structure interacted by high strength concrete and reinforcement in full scale. Most deep beam collapse is dominated by the shear brittle collapse. Recently, confinement is the most effective way to improve the ductility of the reinforced concrete, whereas required to anticipate the occurrence of direct crack on the beam caused by quite large shear forces. Numerical models of deep beam with high strength concrete is done gradually by giving a variation of concrete strength, confinement and stirrup spacing. The two point load are applied with the ultimate load on all models. Then, analyzing of the deep beam is to be done with and without side reinforcement and also an analysis of the crack pattern of the beam to calculate the brittle area under the ratio of crack volume occurred. Concrete is modeled by SOLID65 and steel reinforcement using SOLID45 element. The collapses occurred are all ultimate flexural compressive collapse on the loading plate area, due to brittle shear collapse. The condition occurred on deep beam first crack was already considered a collapse, the density of reinforcement and the additional distance comprehensive reinforcement bar is most effective in terms of adding high ductility of high strength concrete beams. By using the stirrup reinforcement with confinement mode can significantly enhance the resistance of ultimate capacity, cracking ratio and reduced deflection.

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“…This loss is directly associated with the lower elastic modulus of RA, which consequently governs the modulus of elasticity of the resulting material. According to Noguchi & Nemati (2007), in the case of regular concrete there is a nonlinear correlation between elastic modulus and compressive strength. This would be a sufficient reason to expect that a similar relationship applies to the lean concrete and RA.…”

Section: Literature Reviewmentioning

confidence: 99%

Case Study on the Effect of Recycled Asphalt Layer Parameters on the Bearing Capacity of the Pavement

Zariņš

2020

BJRBE

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Numerous ways to use recycled asphalt (RA) in the road base course will provide both environmental and economic benefits, allowing to recycle and utilise this initially waste material in road or pavement reconstruction projects. However, the properties and parameters of RA necessary for the application of reclaimed asphalt pavement (RAP) in a new pavement structure in most cases are not detectable in the design stage, which complicates design and construction process. The purpose of this paper is to study possibilities for evaluating the performance and parameters of RA, as well as to review the possibilities, methods and applications for RA testing. Data for this case study were obtained from recently completed road structures in the form of FWD measurements, together with lab explored parameters of drilled pavement cores. Based on that data, the relationships between the main pavement structural parameters, such as modulus on the surface of the pavement, compressive strength of RA core segment, thickness of bound layers and back calculated modulus were examined. On the way to exploring different analytical approaches, two approximation models were developed and compared, using the obtained data: by directly approximating the obtained data and after processing them with artificial neural network (ANN).

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Relationship Between Compressive Strength and Modulus of Elasticity of High Strength Concrete

Cited by 32 publications

References 1 publication

Mechanical properties of lime–cement masonry mortars in their early ages

Mechanical properties of lime–cement masonry mortars in their early ages

ANSYS Numerical Modeling of Confined Deep Beam with High Strength Concrete

Case Study on the Effect of Recycled Asphalt Layer Parameters on the Bearing Capacity of the Pavement

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