Results 31 to 40 of about 1,598,801 (337)

Concrete domains

open access: yesTheoretical Computer Science, 1993
AbstractThis paper introduces the theory of a particular kind of computation domains called concrete domains. The purpose of this theory is to find a satisfactory framework for the notions of coroutine computation and sequentiality of evaluation.
Kahn, Gilles, Plotkin, Gordon
openaire   +3 more sources

Towards a sustainable concrete: “sandless” concrete

open access: yesScience and Engineering of Composite Materials, 2011
AbstractAs a step towards ensuring the sustainability of concrete as a construction material, an investigation was carried out on the mechanical and durability properties of concrete made without natural sand, termed “sandless” concrete, and with cement partially replaced by fly ash. Four groups of concrete mixes, with water-cement (w/c) ratios of 0.40,
Tan, K.H., Du, H.
openaire   +4 more sources

Concrete admixtures - sustainable concrete

open access: yesActa Polytechnica CTU Proceedings, 2022
Durability of concrete, an important part of the sustainability theme, was, is, and will be one of the main topics for large infrastructure projects like the Gotthard base tunnel. For such important structures a service life of more than 80 years is expected. The prevailing underground conditions like water ingress, aggressive waters etc.
openaire   +2 more sources

Frequency-Based Cable Tension Identification Using a Nonlinear Model with Complex Boundary Constraints

open access: yesShock and Vibration, 2023
Accurate estimation of the cable force affects the bridges’ long-term integrity and serviceability directly. The frequency method is often used for cable tension testing in bridge engineering.
Wen-ming Zhang, Zhi-wei Wang
doaj   +1 more source

3D Concrete Printing: A Systematic Review of Rheology, Mix Designs, Mechanical, Microstructural, and Durability Characteristics

open access: yesMaterials, 2021
This paper provides a state-of-the-art report on the up-to-date research on the emerging 3D concrete printing technology from the concrete materials perspective.
A. Rehman, Jung-Hoon Kim
semanticscholar   +1 more source

Structural behavior analysis of a continuous steel truss arch railway bridge integrating monitoring data

open access: yesAdvances in Mechanical Engineering, 2016
Using theoretical modeling combined with monitoring data, the typical dynamic and static behaviors of a continuous steel truss arch railway bridge are evaluated.
Yong-sheng Song   +5 more
doaj   +1 more source

Experimental Study on Seismic Behavior of Precast Bolt-Connected Steel-Members End-Embedded Concrete (PBSEC) Beam-Column Connections

open access: yesBuildings, 2022
With the rapid development and research of precast concrete frame structures, it is not difficult to find that the structural form and seismic performance of dry-connected precast joints have always been the focus of research.
Zhun Wang, De-Cheng Feng, Gang Wu
doaj   +1 more source

Definition of Yield Seismic Coefficient Spectrum Considering the Uncertainty of the Earthquake Motion Phase

open access: yesApplied Sciences, 2019
Earthquake engineers are typically faced with the challenge of safely and economically designing structures in highly uncertain seismic environments. Yield strength demand spectra provide basic information for the seismic design of structures and take ...
Adam A. Abdelrahman   +3 more
doaj   +1 more source

How Concrete is Concrete?

open access: yesJournal on Mathematics Education, 2011
If we want to make something concrete in mathematics education, we are inclined introduce, what we call, ‘manipulatives', in the form of tactile objects or visual representations. If we want to make something concrete in a everyday-life conversation, we look for an example. In the former, we try to make a concrete model of our own, abstract, knowledge;
openaire   +3 more sources

General Solution for Laterally Loaded Monopile Foundation under Scour

open access: yesJournal of Marine Science and Engineering, 2023
Scour is a common phenomenon for laterally loaded underwater piles. The underwater piles used in different projects have different pile head conditions and pile types (flexible and rigid).
Fan Zhang   +4 more
doaj   +1 more source

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