Results 11 to 20 of about 7,295,630 (273)

Estimation of Uniaxial Compressive Strength and Tensile Strength of Sandstone Based on Point Load

open access: yesRenmin Zhujiang
In rock mechanics and engineering practice, accurate and rapid evaluation of uniaxial compressive strength and tensile strength of rock is important for engineering design and construction safety. Traditional test methods are time-consuming and laborious,
LIU Yongzhi   +5 more
doaj   +4 more sources

Point Load Test for Estimation of Concrete Compressive Strength

open access: yesACI Materials Journal, 1989
The point-load index is presented as a convenient alternate method for determining relative strength of concrete or as a method of estimating concrete compressive strength.
Richardson, David Newton
core   +3 more sources

Experimental studies of scale effects on shear strength, and deformation of rock joints [PDF]

open access: yes, 1980
The effect of scale on shear strength is studied by performing direct shear tests on different sized samples of large joints. A rubber moulding system is used to obtain impressions of the roughness from a variety of natural joint surfaces.
Bandis, Stavros
core   +6 more sources

Point load tests and strength measurements for brittle spheres

open access: yesInternational Journal of Rock Mechanics and Mining Sciences, 2009
A multiaxial failure criterion for brittle materials is applied to a stress field analysis of a perfectly elastic sphere subjected to diametrically opposite normal forces that are uniformly distributed across small areas on the sphere's surface. Expressions are obtained for an intrinsic strength parameter of the material, as well as its unconfined ...
Russell, A.R., Muir Wood, David
openaire   +3 more sources

Punching shear strength of steel fibre reinforced lightweight concrete slabs. [PDF]

open access: yes, 1981
One of the problems in slab-column connections is the punching shear failure at over loads. Such failures are sudden and catastrophic, and are undesirable since they do not allow an overall yield mechanism to ...
Theodorakopoulos, Dimitrios D.
core   +6 more sources

Strength Assessment of Steel Fibre Reinforced Recycled Aggregate Concrete by Means of Correlation between Ultrasonic and Point Load Tests [PDF]

open access: yesJournal of Rehabilitation in Civil Engineering, 2022
This paper aimed at assessing the in-situ strength of steel fibre reinforced concrete containing recycled coarse aggregate (RCA) using the correlation between ultrasonic and point load tests.
Hossein Razzaghi   +2 more
doaj   +1 more source

Scale Effect and Correlation between Uniaxial Compressive Strength and Point Load Index for Limestone and Travertine

open access: yesApplied Sciences, 2021
Determining the uniaxial compressive strength of intact rock is the primary objective of a geomechanical project, and a reliable estimate in the early phases saves time and costs for more sophisticated laboratory tests.
Solange Contreras   +5 more
doaj   +1 more source

MECHANICAL PROPERTIES OF MRP LIGHTWEIGHT CONCRETE AND EFFECT OF COMPRESSIVE STRENGTH ON SHEAR CAPACITY OF BEAMS [PDF]

open access: yesJournal of Engineering and Sustainable Development, 2019
The objective of this study is to investigate the effect of compressive strength on the shear capacity of Modified Reactive Powder Lightweight Concrete (MRPLWC) Beams.
Wissam Kadhim AlsaraJ   +2 more
doaj   +3 more sources

Determining the strength index of coal from the Brod - Gneotino deposit, Bitola [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2018
The Point Load Test (PLT) was performed in the geomechanical laboratory of the MMI Bor, in order to determine the strength index of coal samples from the Brod - Gneotino, Bitola, Republic of Macedonia. On the basis of the obtained results, it is possible
Tašić Dušan   +2 more
doaj   +1 more source

Moving load on elastic structures: Passage through the wave speed barriers [PDF]

open access: yes, 2010
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The asymptotic behaviour of an elastically supported infinite string and an elastic isotropic half plane (in frames of specific asymptotic model) under a ...
Voloshin, Vitaly
core   +7 more sources

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