Results 111 to 120 of about 315,352 (293)

Testing and modeling reinforced 3D concrete printing

Structural Concrete, EarlyView.
Abstract 3D Concrete Printing (3DCP) provides several advantages, including construction productivity and sustainability, although the presence of cold joints reduces structural performance, particularly in zones subjected to tensile stresses. In addition, it is difficult to reinforce 3DCP structures with conventional steel rebars, generally used to ...
Haruto Tasaki, Noriyuki Kobayashi, Tomoya Asakawa, Alessandro P. Fantilli, Yao Ding, Ryo Egawa, Kazunori Ohno, Tomoya Nishiwaki   +7 more
wiley   +1 more source

Bond, tension‐stiffening, and cracking in multi‐generational recycled aggregate concrete subjected to shrinkage strains

Structural Concrete, EarlyView.
Abstract The concrete industry is responsible for a significant portion of global waste production and multi‐generation recycled aggregate concrete (MGRAC) is a means to allow the sector to transition to a circular economy framework. To predict the behavior of MGRAC at the member level there is a need to understand the underlying mechanics of bond ...
Lloyd Dadd, Phillip Visintin, Bree Bennett, Tianyu Xie   +3 more
wiley   +1 more source

Evaluation of cold joint effects on the microstructure and mechanical behavior of three‐dimensional printed concrete specimen

Structural Concrete, EarlyView.
Abstract 3D concrete printing (3DCP) is an automated construction technique that uses an extrusion process to fabricate structures efficiently. However, the layer‐by‐layer process can create interlayer weaknesses, and interruptions during printing can result in cold joints, which can negatively affect the structural behavior.
Sung‐Jo Kim, Inken Jette Rasehorn, Dietmar Stephan, Tong‐Seok Han   +3 more
wiley   +1 more source

Influence of calcination temperature on the durability of metakaolin concrete and limitations of conventional testing methods

Structural Concrete, EarlyView.
Abstract Incorporating metakaolin (MK) as a partial cement replacement offers a viable pathway to reduce carbon emissions while improving concrete performance. However, its durability behavior remains inconsistent, and the applicability of durability test methods to MK‐based concrete is not well established.
Mayen J. Geu, Yan Zhuge, Xing Ma, Thong M. Pham   +3 more
wiley   +1 more source

Development of hydration temperatures on cement pastes

Acta Polytechnica CTU Proceedings
This article deals with the possible combination of high temperature fly ash with fluidised bed fly ash. The main objective of the experiment is to verify the effect of the combination of these two energy by-products on simpler systems – cement pastes.
Meruňka, Milan, Šperling, Petr, Hela, Rudolf   +2 more
openaire   +3 more sources

High temperature fracture behavior and damage evolution of recycled aggregate concrete produced from metakaolin modified parent concrete

Structural Concrete, EarlyView.
Abstract The increasing use of recycled aggregate concrete (RAC) offers significant environmental benefits by reducing construction and demolition waste; however, its fracture performance and damage evolution under elevated temperatures remain insufficiently understood, particularly when recycled aggregates are derived from metakaolin modified parent ...
Zubair Yousuf, Viktor Hlavička
wiley   +1 more source

The Relationship between Molecular Structure and Foaming of Poly(ethylene glycol)—Poly(propylene glycol) Triblock Surfactants in Cementitious Materials

Buildings
This study investigates the relationship between the molecular structure and foaming of poly(ethylene glycol) and poly(propylene glycol) triblock copolymers in Portland cement pastes.
Mohammad Sadegh Tale Masoule, Ali Ghahremaninezhad   +1 more
doaj   +1 more source

Achieving sustainable and durable concrete using high‐volume SiO2: Engineering properties, environmental and economic benefits

Structural Concrete, EarlyView.
Abstract This study explores the potential of high‐volume amorphous silica (SiO2) replacement for ordinary Portland cement (OPC) in concrete to reduce carbon emissions. Amorphous SiO2, such as silica fume (SF) and CO2 mineralization‐produced Si‐rich gel, offers superior properties to concrete but is under‐researched for its use in concrete with high ...
Xinlin Ji, Lijie Chen, R. K. L. Su
wiley   +1 more source

Magnetothermal‐responsive drug release bone cement based on EGFR‐mutated lung cancer bone metastases

VIEW, EarlyView.
A novel magnetothermal‐responsive bone cement was developed by integrating PMMA/CPC/Osimertinib matrix with Fe3O4@SiO2@Zol nanomaterials. This dual‐drug system achieves controlled release, combining excellent mechanical properties with potent anti‐tumor activity and bone regulation for treating EGFR‐mutated LC‐BoM.
Kandi Xu, Kai Li, Hao Wang, Lishu Zhao, Xinyue Liu, Yujin Liu, Li Ye, Wengang Zhang, Zhimin Chen, Xuyang Chen, Yujie Li, Qianqian Zhang, Wencheng Zhao, Xuebin Zheng, Yu Chen, Yayi He   +15 more
wiley   +1 more source

Artificial Intelligence and Digital Impressions: The Positives and the Pitfalls

Australian Dental Journal, EarlyView.
ABSTRACT Digital impressions are now central to contemporary dental workflows, driven by advances in CAD/CAM manufacturing and intraoral scanning technologies. In parallel, rapid progress in artificial intelligence (AI)—particularly deep learning—has led to its widespread integration into digital impression systems.
Andrew Keeling
wiley   +1 more source