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A Review on Chemical and Autogenous Shrinkage of Cementitious Systems. [PDF]
Materials (Basel)Chemical shrinkage (CS) is an intrinsic parameter that may affect the early age cracking of paste, mortar and concrete. It is well known as the driving force of self-desiccation, autogenous shrinkage (AGS) and drying shrinkage. During the first stage of cement hydration (at the initial setting time), the CS and AGS are equal.
Ghanem H +3 more
europepmc +3 more sources
Mitigation strategies for autogenous shrinkage cracking
Cement and Concrete Composites, 2004 Udgivelsesdato ...
Bentz, D.P., Jensen, Ole Mejlhede
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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
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Autogenous Shrinkage of HPC and Ways to Mitigate it
Key Engineering Materials, 2014 Autogenous shrinkage strains may cause cracking of brittle cement-based systems. The lower the water/cement ratio of a mixture, the higher the autogenous shrinkage and the higher the probability of cracking. Cracking increases the probability of ingress of aggressive substances into the concrete, jeopardizing the durability of the material.
Van Breugel, K. (author) +1 more
openaire +3 more sources
A Fracture Mechanics-based Method for Prediction of Cracking of Circular and Elliptical Concrete Rings under Restrained Shrinkage [PDF]
, 2014 This article has been made available through the Brunel Open Access Publishing Fund.A new experimental method, utilizing elliptical ring specimens, is developed for assessing the likelihood of cracking and cracking age of concrete subject to restrained ...
Dong, W +5 more
core +1 more source
Advances in Materials Science and Engineering, 2017 The use of saturated coral aggregate (SCA) as practical replacement of quartz sand has been shown to effectively mitigate the autogenous shrinkage in ultrahigh performance concrete (UHPC).
Jinming Liu +5 more
doaj +1 more source
The influence of metakaolin on the autogenous and drying shrinkage of internally cured concrete [PDF]
MATEC Web of ConferencesInternal curing might be considered crucial for applications, where High-Performance Concrete (HPC) mixtures are needed, to mitigate or even eliminate the development of autogenous shrinkage and thus the formation of early-age microcracks that diminish ...
Tsivolas Konstantinos +2 more
doaj +1 more source
Autogenous Shrinkage and Crack Resistance of Carbon Nanotubes Reinforced Cement-Based Materials
International Journal of Concrete Structures and Materials, 2020 Cracking caused by shrinkage deformation of cement-based materials at early age is a major problem leading to material failure in restrained conditions.
Yanming Liu +7 more
doaj +1 more source
Use of cells and/or biologics combined with scaffolds for soft tissue regeneration around dental implants. [PDF]
J PeriodontolAbstract Background The aim of this systematic review is to evaluate the efficacy of cell‐based therapies and biologically enhanced scaffolds for peri‐implant soft tissue regeneration, including the increase in soft tissue thickness (STT) and/or keratinized mucosa (KM) augmentation.
Montero E +5 more
europepmc +2 more sources
MATEC Web of Conferences, 2018 A model describing the variation in autogenous shrinkage and drying shrinkage of portland cement concrete, depending on the volume of aggregates and the shrinkage of hardened cement paste, is presented.
Nesvetaev Grigory +2 more
doaj +1 more source