Results 31 to 40 of about 10,976 (216)

Impact of super absorbent polymers on early age behavior of ultra-high performance concrete walls [PDF]

open access: yes, 2019
Early age cracking, a common problem for Ultra-High Performance Concrete (UHPC), is caused by Autogenous Shrinkage (AS) and self-desiccation arising from the chemical shrinkage during the cement hydration reactions when the deformation is restrained ...
De Belie, Nele   +7 more
core  

Derivation of normalized pressure impulse curves for flexural ultra high performance concrete slabs [PDF]

open access: yes, 2013
In previous studies, a finite-difference procedure was developed to analyze the dynamic response of simply supported normal reinforced concrete (NRC) slabs under blast loads.
ASCE   +5 more
core   +1 more source

Analytical stress solution framework for lined compressed air energy storage chambers and its application to safe burial depth determination and supporting effectiveness evaluation

open access: yesDeep Underground Science and Engineering, EarlyView.
An analytical framework delivers a closed‐form stress solution for lined compressed air energy storage chambers, enabling the determination of the minimum safe burial depth. The solution quantitatively evaluates lining support effectiveness, offering a reliable tool for chamber design and optimization.
Zeyuan Sun   +3 more
wiley   +1 more source

Experimental and Analytical Investigation of Bond Behavior of Deformed Steel Bar and Ultra-High Performance Concrete

open access: yesBuildings, 2022
Ultra-high performance concrete (UHPC) has been demonstrated to be a realistic alternative to less maintenance and significantly longer service life due to its better mechanical properties and low permeability.
Rui Liang, Yuan Huang, Zhenming Xu
doaj   +1 more source

Education and communicating positive young minds in creating sustainable environment and development [PDF]

open access: yes, 2020
Purpose: Proposed course content for each group age is outlined from the early age of a child to the university education system. However, these course contents are a recommendation which indicates the importance of continuity to ensure that the young ...
Abdul Hamid, Norashikin   +6 more
core   +2 more sources

Distributed AutoML framework for multi‐objective optimization of concrete crack segmentation models

open access: yesStructural Concrete, EarlyView.
Abstract Monitoring cracks in concrete surfaces is essential for structural safety. While machine vision techniques have received significant interest in this domain, selecting optimal models and tuning hyperparameters remain challenging. This paper proposes a Distributed Automated Machine Learning (AutoML) framework for efficiently designing and ...
Armin Dadras Eslamlou   +3 more
wiley   +1 more source

Identification of brittle damage in a UHPC beam using ultrasonic transmission tomography

open access: yesBudownictwo o Zoptymalizowanym Potencjale Energetycznym
This paper presents the results of ultrasonic testing conducted on a steel fiber-reinforced UHPC (Ultra-High Performance Concrete) beam with dimensions of 0.2 m × 0.24 m × 6.0 m.
Karolina Tatara, Piotr Adam Bońkowski
doaj   +1 more source

Durability and Smart Condition Assessment of Ultra-High Performance Concrete in Cold Climates [PDF]

open access: yes, 2016
The goals of this study were to develop ecological ultra-high performance concrete (UHPC) with local materials and supplementary cementitious materials and to evaluate the long-term performance of UHPC in cold climates using effective mechanical test ...
Allena, Srinivas   +2 more
core  

Concrete in architecture: Redefining form, space, function, and insights from bibliometric analysis

open access: yesStructural Concrete, EarlyView.
Abstract Concrete has become a cornerstone in architectural and engineering innovation, as it seamlessly integrates structural performance with artistic expression. Its evolution from ancient opus caementicium to contemporary ultra‐high‐performance concrete illustrates its adaptability to the change in technological, environmental, and design paradigms.
Mouhcine Benaicha   +2 more
wiley   +1 more source

Static mechanical properties and mechanism of C200 ultra-high performance concrete (UHPC) containing coarse aggregates

open access: yesScience and Engineering of Composite Materials, 2020
In this paper, C200 ultra-high performance concrete (UHPC) containing coarse aggregate was prepared. Firstly, four different maximum size and three different type of coarse aggregate having significant differences in strength, surface texture, porosity ...
Yujing Lv   +5 more
doaj   +1 more source

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