Results 11 to 20 of about 100,765 (236)

Sedimentary Mercury Enrichments as a Tracer of Large Igneous Province Volcanism

open access: yesGeophysical Monograph Series, Page 247-262., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Lawrence M. E. Percival   +3 more
wiley  

+3 more sources

Practical Aspects of Correlation Analysis of Compressive Strength from Destructive and Non-Destructive Methods in Different Directions

open access: yesInfrastructures, 2023
The research presented here demonstrates the practical aspects of the numerical correlation of the results of the compressive strength test. The destructive test (DT) in a hydraulic press and the non-destructive test (NDT) using a Schmidt hammer in ...
Baitollah Badarloo, Petr Lehner
doaj   +1 more source

Factors influencing the performance of rebound hammer used for non-destructive testing of concrete members: A review

open access: yesCase Studies in Construction Materials, 2021
Non-destructive testing (NDT) has a vital role in finding surface hardness of concrete members. B-Proceq curve can calculate the concrete strength by providing statistical correlations between the destructive and the non-destructive strength.
Hemraj R. Kumavat   +2 more
doaj   +1 more source

NDT assessment of existing concrete structures: spatial analysis of rebound hammer results recorded in-situ

open access: yesEngineering Structures and Technologies, 2015
A comparative spatial analysis of surface hardness of structural concrete is introduced. Main objective of the paper is to make a repeatability comparison of three types of the still most popular non-destructive testing devices for concrete: L-type ...
Adorján Borosnyói
doaj   +1 more source

Rebound hammer tests of high-strength concrete: Effects of internal stress and the shape of the impact area of the test specimens on the measurement results [PDF]

open access: yes, 2019
This study examines the factors affecting the results of non-destructive testing of high-strength concrete performed on cubes and on cylinders and examines the processing of calibration relations.
Bodnarová, Lenka   +2 more
core   +2 more sources

Assessment techniques for the evaluation of concrete structures after fire [PDF]

open access: yes, 2013
As concrete structures exposed to fire behave in most cases very well, it could be of economic interest to repair the fire damaged structure. For this purpose a damage assessment based on scientific research is required as first step.
Annerel, Emmanuel, Taerwe, Luc
core   +2 more sources

A new technique for non-destructive field measurement of rock-surface strength: an application of the Equotip hardness tester to weathering studies [PDF]

open access: yes, 2007
Tafone-like depressions have developed on the Aoshima sandstone blocks used for a masonry bridge pier in the coastal spray zone. A thin layer of partial granular disintegration was found on the surface in depressions.
Aoki Hisashi   +2 more
core   +1 more source

Anisotropy of mechanical properties of greywacke [PDF]

open access: yes, 2019
The paper brings description of the mechanical properties of greywacke sampled in Kobeřice quarry (Lower Carboniferous Culm Basin, Drahany Uplands, Bohemian Massif).
Havlíčková, Dagmar   +2 more
core   +1 more source

Compressive Strength Prediction Model of High Strength Concrete by Destructive and Nondestructive Technique [PDF]

open access: yesE3S Web of Conferences
Concrete’s compressive strength can be tested in a laboratory before construction begins. Since concrete is a natural material and cannot be destroyed, it is not possible to determine its compressive strength through destructive testing.
Singh Shobna   +6 more
doaj   +1 more source

Estimating the joint roughness coefficient of discontinuities found in metamorphic rocks [PDF]

open access: yes, 2008
The paper presents the results of different methods of determining the roughness of joints in quartzites, metagreywackes and phyllites obtained from road cuts in central Portugal.
Andrade, Pedro, Saraiva, António
core   +1 more source

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