Results 31 to 40 of about 8,674 (232)

ON THE AUTOGENOUS SHRINKAGE OF CEMENT PASTES

Architecture and Engineering, 2023
Introduction: This study focuses on autogenous shrinkage in cement pastes and presents a novel calculation method considering variations in internal relative humidity (IRH). IRH significantly influences autogenous shrinkage, and its evolution is modeled based on decline curves.
Abdelghafour Saadi, Abdelmalek Brahma
openaire   +1 more source

WATER WITHIN LIGHTWEIGHT AGGREGATE CONCRETE AND ITS RELATION TO AUTOGENOUS SHRINKAGE [PDF]

, 2006
Autogenous shrinkage of lightweight aggregate concrete (LAC) has been investigated with the aims of studying if water within LAC is effective in preventing autogenous shrinkage as suggested by Bentz’s model.
Kristiawan, S A, Sangadji, Senot
core  

Restrained Shrinkage of Fly Ash Based Geopolymer Concrete and Analysis of Long Term Shrinkage Prediction Models [PDF]

, 2017
The research presented in this manuscript describes the procedure to quantify the restrained shrinkage of geopolymer concrete (GPC) using ring specimen. Massive concrete structures are susceptible to shrinkage and thermal cracking.
Ahmed, Mahbub K, Allouche, Erez N, Begum, Hosney Ara, Islam, Md R   +3 more
core   +3 more sources

Root coverage using a microsurfaced acellular dermal matrix: A retrospective case series

Clinical Advances in Periodontics, EarlyView.
Abstract Background Acellular dermal matrices (ADMs) have been used for root coverage for over 25 years, yet few advancements have improved clinical outcomes or reduced complications. This case series evaluated the use of a novel microsurfaced ADM (mADM), which features a microtextured surface designed intended to promote healing and improve graft ...
Yu‐Chang Wu, Guo‐Liang Cheng, Shaun Rotenberg   +2 more
wiley   +1 more source

Effects of cooking oil on the shrinkage-reducing of high-strength concrete

Results in Materials
Autogenous shrinkage is a serious problem for high-strength concrete, which may lead to early-age cracking. Shrinkage-reducing agents are typically used to mitigate the autogenous shrinkage of concrete.
Yanlin Huo, Xinhong Dong, Yang Gao, Xiaodong Xu, Liang Zeng, Yuanchao Wu, Yunhui Zhao, Yingzi Yang, Qunshan Su, Jinguang Huang, Dong Lu   +10 more
doaj   +1 more source

Autogenous shrinkage of alkali-activated slag: A critical review

Cement and Concrete Research, 2023
sponsorship: This work was partially supported by Horizon Europe guarantee funding (grant number EP/X022587/1) . The first author (ZL) would like to thank Prof. Klaas van Breugel for the insightful discussions with him. The second author (YC) would like to acknowledge the financial support from China Scholarship Council (Grant No. 201906150022) .
Li, Zhenming, Chen, Yun, Provis, John L., Cizer, Ozlem, Ye, Guang   +4 more
openaire   +2 more sources

Use of superabsorbent polymers to mitigate autogenous shrinkage in ultra-high performance concrete [PDF]

, 2019
Ultra-high performance concrete (UHPC) with low w/c-ratio is very prone to the formation of cracks due to autogenous shrinkage. These cracks can lead to a decreased durability of the concrete, resulting in higher maintenance and/or repair costs in the ...
De Belie, Nele, De Meyst, Laurence, Debbaut, Brenda, Pereira Gomes de Araújo, Maria Adelaide, Van Tittelboom, Kim, Van Vlierberghe, Sandra   +5 more
core  

Research Progress of Polyoxometalate‐Integrated Frameworks: Syntheses, Properties, and Applications

ChemistryEurope, EarlyView.
This review systematically summarizes the integration of polyoxometalates with covalent organic frameworks, metal‐organic frameworks, hydrogen‐bonded organic frameworks, and emerging porous hosts. It highlights synergistic effects, synthesis strategies, and applications in catalysis, energy storage, sensing, and biomedicine, while addressing current ...
De‐Yin Wang, Zhang‐Di Liu, Rui Xing, Zi‐Hao Wei, Zaixiang Zhang, Yang Yang, Jin Zhu   +6 more
wiley   +1 more source

Early Age Autogenous Shrinkage of Fibre Reinforced Concrete

Nordic Concrete Research, 2018
Concrete is often sensitive to cracking during the hardening process, and these cracks could be the result of early-age shrinkage. One method to reduce shrinkage is to add different types of fibres to concrete.
Ullah Farid, Al-Neshawy Fahim, Punkki Jouni   +2 more
doaj   +1 more source

Humidity Sensitivity of Hydration of Expansive Agent and Its Expansive Efficiency in Ultra-High Performance Concrete

Crystals, 2022
Ultra-high performance concrete (UHPC) has a potential cracking risk due to its large autogenous shrinkage. The use of an expansive agent is an effective approach to reduce autogenous shrinkage of UHPC.
Yujiang Wang, Qian Tian, Hua Li, Yang Wang   +3 more
doaj   +1 more source