Results 51 to 60 of about 7,814 (231)

SEGMENTED WIND TURBINE TOWER CONNECTIONS: A STATE‐OF‐THE‐ART REVIEW, CLASSIFICATION, AND CASE STUDY OF A NOVEL MODULAR TOWER

open access: yesce/papers, Volume 9, Issue 1, Page 34-45, April 2026.
Abstract As wind turbine towers grow taller and more powerful, tower design faces challenges in transportation, erection, and structural performance. To address these issues, modular and segmented towers with improved connection systems have emerged.
J. M. Tekantappeh   +3 more
wiley   +1 more source

Preparation Technology and Experimental Study of Fast-Hardening UHPC Repair Material

open access: yesBuildings
The performance of concrete materials deteriorates under load fluctuation and long-term erosion from the external environment, leading to damage. In order to solve the problems of concrete materials needing repair, poor working performance and the low ...
Ming Xie   +4 more
doaj   +1 more source

Modeling the response of UHPC shear‐critical beams: Integrating nonlinear finite element analysis and artificial neural network

open access: yesStructural Concrete, Volume 27, Issue 2, Page 1364-1382, April 2026.
Abstract An analytical framework suited for the analysis of shear‐critical ultra‐high performance concrete (UHPC) members is presented. The numerical methodology utilizes a nonlinear finite element analysis formulation integrated with an artificial neural network (ANN) that characterizes the UHPC tension response based on its mix design. In addition, a
Amjad Diab, Anca Ferche
wiley   +1 more source

Laboratory and Field Testing of an Accelerated Bridge Construction Demonstration Bridge: US Highway 6 Bridge over Keg Creek, RB02-012, 2013 [PDF]

open access: yes, 2013
The US Highway 6 Bridge over Keg Creek outside of Council Bluffs, Iowa is a demonstration bridge site chosen to put into practice newly-developed Accelerated Bridge Construction (ABC) concepts.

core  

Numerical analysis of the effects of corrosion on the punching shear capacity of reinforced concrete flat slabs with openings

open access: yesStructural Concrete, Volume 27, Issue 2, Page 1663-1683, April 2026.
Abstract The reinforcement corrosion is one of the main degradation mechanisms in reinforced concrete structures. Its effects can harm structural elements by reducing mechanical capacity, mainly due to diminished reinforcement properties and expansive reactions within the concrete.
Vinícius D'Almeida Rodrigues Ramos   +3 more
wiley   +1 more source

High temperature and freeze-thaw study of strengthened concrete with ultra-high-performance concrete

open access: yesCase Studies in Construction Materials
This study investigates the effectiveness of using ultra-high-performance concrete (UHPC) to strengthen concrete members subjected to high temperature and freeze-thaw conditions.
Ming-Gin Lee   +5 more
doaj   +1 more source

How dense can one pack spheres of arbitrary size distribution?

open access: yes, 2012
We present the first systematic algorithm to estimate the maximum packing density of spheres when the grain sizes are drawn from an arbitrary size distribution. With an Apollonian filling rule, we implement our technique for disks in 2d and spheres in 3d.
Andrade Jr., José S.   +3 more
core   +1 more source

Microstructural Characteristics of Cement-Based Materials Fabricated Using Multi-Mode Fiber Laser [PDF]

open access: yes, 2020
Cement-based materials are the most prevalent construction materials, and the conventional cutting techniques are still mostly used for fabricating the materials.
Lee, Dongkyoung   +2 more
core   +1 more source

Do PCEs Adsorb Preferentially on OPC or Calcined Clay?

open access: yesJournal of the American Ceramic Society, Volume 109, Issue 4, April 2026.
ABSTRACT In multi‐component binders, admixtures such as polycarboxylates (PCEs) may exhibit preferential adsorption onto one component. Hence, for the first time PCE adsorption on ordinary Portland cement (OPC) and calcined clay (CC) in an OPC/CC blend was quantified by separating the OPC and CC particles from the hydrated cement employing a ...
Jiaxin Chen, Johann Plank
wiley   +1 more source

Development and Preliminary Application of PermanentForm of Ultra-high Performance Concrete

open access: yesRenmin Zhujiang, 2020
Because ultra-high performance concrete (UHPC) has ultra-high strength and ultra-highdurability, it is a possible way for covering the outer surface of the reinforced concretestructure with UHPC permanent form to effectively improve the service life of ...
WANG Yongjian   +7 more
doaj  

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