Results 91 to 100 of about 19,752 (294)
Rudarsko-geološko-naftni ZbornikThe Unconfined Compressive Strength (UCS) test is one of the most common methods for determining the rock material strength value. However, the size and complexity of the instrument do not allow UCS testing to be carried out in the field.
Antonina Pri Martireni +8 more
doaj +1 more source
Understanding the rebound surface hardness of concrete
Journal of Civil Engineering and Management, 2015 Surface hardness testing of materials can be considered as the oldest method to get information about strength related material properties. In recent decades the rebound hammer has been the most popular surface hardness testing device for concrete ...
Katalin Szilágyi +2 more
doaj +1 more source
Age Factor on Estimating of Strength of Concrete in Structures by Rebound Hammer
Concrete Research and Technology, 2012 The relationship between the rebound number and strength of concrete varies as a function of the age of concrete, but the effect of age can generally be ignored for concrete between 3 days and 3 months old. However, for older concrete, it may be possible to develop the age factor of the rebound number of concrete taking into account the concrete's ...
openaire +2 more sources
Forensic Excavation of Rock Masses: A Technique to Investigate Discontinuity Persistence [PDF]
, 2017 True persistence of rock discontinuities (areas with insignificant tensile strength) is an important factor controlling the engineering behaviour of fractured rock masses, but is extremely difficult to quantify using current geological survey ...
Handley, K +3 more
core +2 more sources
Breadth at the Helm: Generalist CEOs and Corporate ESG Performance‐Evidence From China
Corporate Social Responsibility and Environmental Management, EarlyView.ABSTRACT Drawing on the Upper Echelons Theory and the Imprinting Theory, this study conjectures that generalist CEOs may have a stronger tendency to pursue environmental, social and governance (ESG) goals. We perform multiple regression analyses with observations of Shanghai and Shenzhen A‐share listed companies from 2010 to 2023 in order to explore ...
Shanmei Luo +4 more
wiley +1 more source
Revista Brasileira de GeomorfologiaSeveral active coastal cliffs have been undergoing erosional processes that cause risks and may comprise public roads and the safety of the local population and tourists.
Rubson Pinheiro Maia +2 more
doaj +1 more source
Dead-blow hammer design applied to a calibration target mechanism to dampen excessive rebound [PDF]
An existing rotary electromagnetic driver was specified to be used to deploy and restow a blackbody calibration target inside of a spacecraft infrared science instrument.
Lim, Brian Y.
core +1 more source
Acoustic‐driven surface cleaning with millimeter‐sized bubbles at translational resonance
Droplet, EarlyView.Time‐lapse visualization comparing bubble trajectories. The top panel (0 Hz) shows a bubble's linear path under no acoustic forcing, while the bottom panel (50 Hz) demonstrates the oscillatory motion induced by acoustic waves at a resonance mode. This mechanism holds promising potential for applications such as surface cleaning.
Yan Jun Lin +2 more
wiley +1 more source
MATEC Web of Conferences, 2016 Surface wave propagation (SWP) technique employing Lead Zirconate Titanate (PZT) transducer has recently been found to be a useful tool in concrete hydration monitoring.
Kwong Kok Zee +2 more
doaj +1 more source