Mix Proportion for Highly Fluidized Concrete With Welangum

Yurugi, Masahiro; Sakai, Goro

doi:10.2208/jscej.1998.588_125

Cited by 12 publications

(11 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The filling capacity test (Fig. 2) was used to determine the facility of the concrete to deform readily among closely spaced obstacles [6]. The center-to-center spacing between smooth copper tubes is 50 mm in two directions, resulting in a clear spacing of 34 mm.…”

Section: Testing Methodsmentioning

confidence: 99%

Testing and performance of fiber-reinforced, self-consolidating concrete

2000

View full text Add to dashboard Cite

A B S T R A C T R I~ S U M I~The casting of fiber-reinforced concrete presents greater handling difficulty and requires more deliberate planning and workmanship than conventional concrete without fibers. The feasibility of producing fiber-reinforced, self-consolidating concrete (FR-SCC) that can be cast into place with minimum or no consolidation was investigated. Sixteen mixtures made with steel fibers measuring 38 mm in length used at dosages of 0, 0.5, and 1%, by volume, were investigated. The mixtures were prepared with various types of binary and ternary cementitious materials and W/CM of 0.37 to 0.45. The higher W/CM mixtures incorporated a viscosity-enhancing agent to reduce the risk of segregation. Concrete mixtures with slump flow consistencies of 650 and 530 mm were prepared, with the latter representing a highly flowable concrete that would require some consolidation. The characteristics of these mixtures were compared to those of a conventional fiber-reinforced concrete with a targeted slump consistency of 200 mm. The mixtures were tested for rheological parameters using a concrete viscometer, for restricted deformability using the filling capacity and V-funnel flow tests, as well as for compressive strength and flexural toughness. The paper evaluates the suitability of using the above workability tests to assess restricted deformability of FR-SCC and discusses the effect of fiber volume, mixture proportioning, and consistency on concrete properties.

show abstract

Section: Testing Methodsmentioning

confidence: 99%

Testing and performance of fiber-reinforced, self-consolidating concrete

2000

View full text Add to dashboard Cite

show abstract

“…In general, SCC requires a manipulation of the concrete constituents and/or an introduction of chemical agents, such as superplasticisers and viscosity modifying admixtures. To achieve and maintain the ability of SCC to flow under its own weight and eliminate the possibility of segregation and blockage, researchers suggest limiting the absolute volume of coarse aggregate used in the mixture and improving the particle size distribution of solid particles to reduce inter-particle friction (Yurugi et al, 1993). Any reduction in the total volume of the coarse aggregate, must be balanced by increasing the volume of the cement mortar, which often leads to a higher material cost and a significant temperature rise, especially in massive concrete structures.…”

Section: Approaches For Scc Designmentioning

confidence: 99%

Design of self-compacting concrete with fly ash

Dinakar

2012

Magazine of Concrete Research

View full text Add to dashboard Cite

Concrete of a desired strength for any specific application can be obtained by using any of the accepted methods of design. However, the addition of mineral admixtures, such as fly ash, in concrete, requires a systematic design procedure for obtaining the required strength. It is possible to design a fly ash concrete of the required strength through the 'efficiency concept', and the same is also true for the design of self-compacting concrete (SCC). In this paper, a new mix design methodology is proposed for proportioning of self-compacting fly ash concretes based on the efficiency concept. The methodology has already been successfully verified through a proper experimental investigation and the self-compacting fly ash concretes were evaluated for their self compactability and strength characteristics. The results indicate that the proposed method is capable of producing high-quality SCC.

show abstract

“…The filling capacity test shown in Fig. 2 was used to determine the facility of the concrete to deform readily among closely spaced obstacles [14]. The test involves the casting of concrete in the non-reinforced section at a constant rate up to a height of 220 mm and observing the facility of the concrete to flow in the restricted region.…”

Section: Methodsmentioning

confidence: 99%

Factorial design model for proportioning self-consolidating concrete

1999

View full text Add to dashboard Cite

ASS+RACT RgSUMEA factorial design was carried out to model the influence of key mixture parameters on properties affecting the performance of self-consolidating concrete (SCC). Such responses included slump flow and rheological parameters, filling capacity and V-funnel flow to assess restrained deformability, surface settlement to evaluate stability after casting, and compressive strength. Thirty two mixtures were prepared to derive the statistical models and nine others to evaluate their accuracy. The models are valid for a wide range of mixture proportioning. The paper presents the derived models that unable the identification of underlying primary factors and their interactions that influence the modelled responses of interest for self-consolidating concrete. Such parameters can be useful to reduce the test protocol needed for the proportioning of self-consolidating concrete. The usefulness of the models to better understand trade-offs between mixture parameters and compare the responses obtained from various test methods are highlighted. Pour la formulation du b~ton autoplafant (BAP) plusieurs gdch~es s'imposent, ~tant donn~ qu'il faut ma~triser tous les facteurs affectant les propri~t~s ~ l'~tat frais et durci du b~ton. Des modules statistiques ont ~t~ g~n&e~s ~ partir de la re~alisation d' un plan d' exp~rience. Ces modules identifient les param~tres importants de la formulation

show abstract

Mix Proportion for Highly Fluidized Concrete With Welangum

Cited by 12 publications

References 1 publication

Testing and performance of fiber-reinforced, self-consolidating concrete

Testing and performance of fiber-reinforced, self-consolidating concrete

Design of self-compacting concrete with fly ash

Factorial design model for proportioning self-consolidating concrete

Contact Info

Product

Resources

About