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superplasticizer 3

accelerator 1

adsorption 1

compressive strength 1

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elastic modulus 1

fly ash 1

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polycarboxylate 1

pozzolanic index 1

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self-compacting concrete (SCC) 1

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Adsorption properties of polycarboxylate ether-based superplasticizer on cement particles and their resultant

Jinyoung YOON; Byoung Il CHOI; Jae Hong KIM

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 4, Pages 506-514 doi: 10.1007/s11709-022-0813-5

Abstract: The cement dispersion performance of a polycarboxylate (PCE)-based superplasticizer is highly related

Keywords： adsorption polycarboxylate superplasticizer rheology dispersion

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An experimental study for optimization of high range water reducing superplasticizer in self compacting

Rahul DUBEY, Pardeep KUMAR

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 1, Pages 62-71 doi: 10.1007/s11709-013-0192-z

Abstract: This paper focuses mainly on experimental study to optimize dosages of superplasticizer for mortar of

Keywords： self-compacting concrete (SCC) fresh properties superplasticizer optimization compressive strength

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Accelerated engineering properties of high and low volume fly ash concretes reinforced with glued steel fibers

Vallarasu Manoharan SOUNTHARARAJAN, Dr. Anandan SIVAKUMAR

Frontiers of Structural and Civil Engineering 2013, Volume 7, Issue 4, Pages 429-445 doi: 10.1007/s11709-013-0226-6

Abstract: The present study focuses on the improvement of pozzolanic reaction of fly ash particles with the cement hydration products. Low and high volume fly ash concrete mixtures were studied systematically with the addition of accelerating admixtures and accelerated curing of the concrete specimens in a steam chamber for 18 h at 75°C. Also, the reinforcing effects of glued steel fibers addition on the compressive and flexural performance of fly ash concrete were investigated. The test results indicated that the addition of accelerator improved the rate of hardening and the inclusion of steel fibers provided higher flexural performance. Also, it can be noted that the high volume fly ash (50%) addition in concrete showed a reduction in strength; however, the addition of accelerator has compensated the deceleration in strength gain. The proper selection of concrete ingredients, addition of accelerator and initial steam curing for 18 h showed better improvement on the engineering properties in fly ash concrete. A maximum increase (41.7%) in compressive strength of fly ash concrete around 52.90 MPa was noticed for 25% fly ash substitution and 1.5% steel fibers addition. Dynamic elastic modulus was also calculated in loaded concrete specimen using ultrasonic pulse velocity test and showed a good agreement with the experimental value.

Keywords： fly ash pozzolanic index steam curing superplasticizer accelerator steel fibres elastic modulus