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

doi:10.1007/s11709-013-0192-z

Front Struc Civil Eng

0, Vol.

Issue () : 62-71 https://doi.org/10.1007/s11709-013-0192-z

RESEARCH ARTICLE

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

Rahul DUBEY(

), Pardeep KUMAR

Department of Civil Engineering, National Institute of Technology, Hamirpur 177005, India

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Abstract

Concrete is extensively used construction material in the infrastructure development industry. With increase in technical knowhow, the need of research for high performance concretes such as self-compacting concrete (SCC) has increased in the last decade. The adaptability of SCC is due to its fluidic behavior in fresh state. However, to develop SCC using indigenous materials, the lack of standardized mix design procedures is the biggest impediment. Although with the advent of chemical admixtures, it is possible to achieve concrete with high fluidity, but at the same time durability issues require more attention. To have these fresh state properties SCC mixes are typically designed with high powder contents, and chemical admixtures. Proportioning and optimization of these materials is a key issue in the mix design of SCC. This paper focuses mainly on experimental study to optimize dosages of superplasticizer for mortar of SCC and then in concrete mixture itself.

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

Corresponding Author(s): DUBEY Rahul,Email:rahulnitham0051@gmail.com

Issue Date: 05 March 2013

Cite this article:

Rahul DUBEY,Pardeep KUMAR. An experimental study for optimization of high range water reducing superplasticizer in self compacting concrete[J]. Front Struc Civil Eng, 0, (): 62-71.

URL:

https://academic.hep.com.cn/fsce/EN/10.1007/s11709-013-0192-z
https://academic.hep.com.cn/fsce/EN/Y0/V/I/62

Tab.1 Chemical properties of fly ash and silica fume

Tab.2 Physical properties of fine and coarse aggregate

Tab.3 Mix proportions for SCC

Tab.4 Relative flow spread in the mixes (Results of mini slump cone test on paste)

Fig.1 (a) Geometric dimensions of mini slump cone; (b) mini slump cone apparatus

Fig.2 (a) Retained water ratio for Mix 1; (b) retained water ratio for Mix 2

Tab.5 Test results for optimum volumetric w/p ratio and SP dosage in mortar

Fig.3 (a) Geometric dimensions of mini V-funnel; (b) mini V-funnel apparatus

Fig.4 (a) Flow spread from mini slump cone test; (b) flow of mortar during mini V-funnel test

Fig.5 (a) Geometric dimensions of slump cone; (b) slump cone apparatus (unit: mm)

Fig.6 (a) Geometric dimensions of V-funnel; (b)V-funnel apparatus (unit: mm)

Fig.7 (a) Geometric dimensions of L-box; (b) L-box apparatus (unit: mm)

Tab.6 Fresh properties of Mix 1

Tab.7 Fresh properties of Mix 2

Tab.8 Compressive strength of SCC mixes

Fig.8 (a) Slump flow of SCC; (b) Flow of SCC during V-funnel test

Fig.9 Flow through rebar during L-box test

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