Results 11 to 20 of about 1,779 (119)
Effect of Supplementary Materials on the Autogenous Shrinkage of Cement Paste [PDF]
Materials, 2020 In recent years more and more attention has been given to autogenous shrinkage due to the increasing use of high-performance concrete, which always contains supplementary materials. With the addition of supplementary materials—e.g., fly ash and blast furnace slag—internal relative humidity, chemical shrinkage and mechanical properties of cement paste ...
Tianshi Lu, Zhenming Li, Hao Huang
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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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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
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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
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Cracking potential of alkali-activated concrete ïnduced by autogenous shrinkage
, 2021 Alkali activated concrete (AAC) has not received broader industry acceptance, one reason of which lies in the uncertainties in the durability against shrinkage and potential cracking.
Kostiuchenko, A. (author) +14 more
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ESTIMATION OF AUTOGENOUS SHRINKAGE OF CONCRETE
Doboku Gakkai Ronbunshu, 1997 コンクリートの自己収縮ひずみの実測値に基づき, セメントおよび混和材の種類, 水結合材比, 有効材齢の関数とする自己収縮ひずみの予測式を提案した. 既往の実測データを用いて本提案式の精度を検証するとともに, RILEMの French chapter の提案する自己収縮ひずみ予測式との比較も行い, 本提案式の適用性について検討した.
Ei-ichi Tazawa, Shingo Miyazawa
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Autogenous and drying shrinkage of alkali‐activated slag mortars
, 2019 Shrinkage of alkali‐activated slag (AAS) cement is a critical issue for its industrial application. This study investigated the mechanisms and effectiveness of shrinkage‐reducing agent (SRA) and magnesia expansive agent on reducing autogenous and drying ...
Zhang, Zuhua +7 more
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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
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Journal of Esthetic and Restorative Dentistry, EarlyView.ABSTRACT Aim To compare up to 10 years clinical, profilometric and patient‐reported outcomes of implant sites previously augmented using a volume‐stable collagen matrix (VCMX) or connective tissue graft (SCTG) in the aesthetic zone. Methods The original non‐inferiority randomized controlled trial (RCT) enrolled 20 patients who received soft tissue ...
Franz J. Strauss +5 more
wiley +1 more source
Influência do emprego de polímeros superabsorventes nas propriedades de materiais à base de cimento portland [PDF]
, 2012 Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-graduação em Engenharia Civil, Florianópolis, 2009A retração autógena é um problema que atinge materiais de baixa relação a/c e alto teor de finos, como ...
Kumm, Talita Campos
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