scispace - formally typeset
Search or ask a question
Journal ArticleDOI

Self‐compacting high performance concrete

01 Jul 1998-Progress in Structural Engineering and Materials (John Wiley & Sons, Ltd.)-Vol. 1, Iss: 4, pp 378-383
About: This article is published in Progress in Structural Engineering and Materials.The article was published on 1998-07-01. It has received 475 citations till now.
Citations
More filters
Journal ArticleDOI
TL;DR: In this paper, a new mix design method for self-compacting concrete (SCC) is proposed, where the amount of aggregates required is determined, and the paste of binders is then filled into the voids of aggregate to ensure that the concrete thus obtained has flowability, selfcompacting ability and other desired SCC properties.

568 citations

Journal ArticleDOI
TL;DR: In this article, the authors present five models of construction innovation, which can provide a basis upon which companies can select and implement the innovations, including incremental, modular, architectural, system and radical innovations.
Abstract: Construction innovation offers the potential for significant company, industry, and societal benefits. The objective of this paper is to present five models of construction innovation, which can provide a basis upon which companies can select and implement the innovations. Based upon current management and economic theories of innovations, the models reflect the unique conditions of constructed facilities, including the scale, complexity, and longevity of the facilities, as well as their organizational and social contexts. The innovations are differentiated by their degree of change from current practice, and their links to other components and systems. The five models are incremental, modular, architectural, system, and radical innovations. Using this categorization of innovations, companies can plan their implementation activities with respect to timing of commitment, coordination among the project team, special resources, and level of supervisory activity. Examples of construction innovations in each c...

526 citations

Journal ArticleDOI
TL;DR: In this paper, experiments and theories on self-compacting concrete are discussed, where the packing behavior of the powders (cement, fly ash, stone powder) and aggregates (three sands and gravel) used are analyzed in detail.

456 citations

Journal ArticleDOI
TL;DR: In this paper, the authors describe the means through which innovations are implemented, and the strategies it can employ to increase the effectiveness of these operations to capture these competitive and other expected benefits.
Abstract: Construction innovations can provide the critical component for a company's long-term competitive strategy. To capture these competitive and other expected benefits, however, a construction company needs to understand the means through which innovations are implemented, and the strategies it can employ to increase the effectiveness of these operations. Construction-related companies can follow different strategies, based upon the nature of the innovation, their capabilities, resources and overall market strategy. The six stages of implementation are generally described, followed by a description of the types of activity required for each type of innovation, with detailed case studies. L'innovation dans la construction peut etre l'atout majeur de la strategie concurentielle a long terme d'une entreprise. Pour saisir ces avantages concurentiels et d'autres avantages attendus, une societe du secteur de la construction doit cependant comprendre les moyens qui permettent de mettre en oeuvre l'innovation ainsi ...

312 citations

Journal ArticleDOI
TL;DR: In this paper, the influence of fly ash (FA) on the properties of self-compacting concrete (SCC) is investigated and the results indicate that high volume FA can be used in SCC to produce high strength and low shrinkage.

283 citations

References
More filters
Journal Article
TL;DR: In this article, a self-compact concrete is defined as follows at the three stages of concrete: (1) Fresh: selfcompactable; (2) Early age: avoidance of initial defects; (3) After hardening: protection against external factors.
Abstract: 1. Characteristics Self-compacting high-performance concrete is a high performance concrete that can be compacted into every corner of a formwork, purely by means of its own weight and without the need for vibrating compaction (Fig. 1). This concrete is defined as follows at the three stages of concrete: (1) Fresh: selfcompactable; (2) Early age: avoidance of initial defects; (3) After hardening: protection against external factors.

331 citations

Journal ArticleDOI
TL;DR: In this paper, the authors proposed a method to solve the problem of "missing links" in the context of the Internet: https://www.youtube.com/watch?feature.php?feature=youtu.
Abstract: 自己充填コンクリートを製造・施工する場合, その充填性評価及び配合設計手法の確立の観点からコンクリートの自己充填性を評価する試験方法の確立が重要である. そこで, 充填性を評価する上で重要であると考えられるコンクリートの間隙通過のしやすさを本研究で提案したV型ロート試験で評価することを試みた. その結果, コンクリートの変形性をスランプフローで, また, 間隙通過のしやすさをV型ロート試験の流下速度で評価した場合, この両者によって一般的な配筋部における自己充填性を概ね評価できることが分った.

116 citations

DOI
01 Feb 1996
TL;DR: In this article, a self-compactable high performance concrete requiring no consolidation in situ has been developed in Japan to improve the reliability of concrete and concrete structures, which is a significant material innovation for a new generation of concrete structures.
Abstract: Self-compactable high performance concrete requiring no consolidation in situ has been recently developed in Japan to improve the reliability of concrete and concrete structures. This concrete is a significant material innovation for a new generation of concrete structures. A review of the concrete and the applications are described.

66 citations

Journal ArticleDOI
TL;DR: In this article, a self-compacting high performance concrete has been developed that is not affected by workmanship during placing and requires no consolidation afterwards, which can save labor, save energy, and save space.
Abstract: A self-compacting high performance concrete has been developed that is not affected by workmanship during placing and requires no consolidation afterwards. Self-compacting concrete can save labor, ...

62 citations

Journal ArticleDOI
TL;DR: In this paper, the effect of superplasticizer on the balance between flowability and viscosity of mortar in self-compacting concrete was investigated quantitatively, and the ratio of funnel speed to flow area was found to be almost constant, independent of the water-powder ratio.
Abstract: The effect of superplasticizer on the balance between flowability and viscosity of mortar in self-compacting concrete was investigated quantitatively. From experimental results, the ratio of funnel speed to flow area of mortar with a fixed amount of superplasticizer was found to be almost constant, independent of the water-powder ratio. A higher amount of superplasticizer resulted in a lower ratio of funnel speed to flow area. The ratio is proposed as an index for the effect of superplasticizer on mortar flowability and viscosity from the viewpoint of achieving self-compactability. This index is convenient for evaluating the amount of superplasticizer for proper flowability and viscosity of mortar using only one set of experimental results. The relationship between superplasticizer amount and its effect was found to differ depending on the type of powder or superplasticizer. The difference can be indicated quantitatively by the proposed index.

46 citations