Dosage of Silica Fume in High Performance Concrete

Michal Ženíšek; Tomáš Vlach; Lenka Laiblová

doi:10.4028/www.scientific.net/KEM.677.98

Paper Titles

Characteristic Properties of the Fly Ash from Coal Combustion
p.75

Frost Resistance of Concrete Screed with the Fly Ash Addition
p.80

Rheological Characteristics of Alkali Activated Fly-Ash Concrete Mixtures
p.86

Hygric Properties of HPC with Natural Pozzolana
p.93

Dosage of Silica Fume in High Performance Concrete
p.98

Comparison of the Effects of Different Pozzolana on the Properties of Self-Compacting Concrete
p.103

Concrete with Crystalline Admixture for Ventilated Tunnel against Moisture
p.108

Influence of Microwave Treatment on Properties of Concrete with Non-Cyclic Alkanes
p.114

Porosity of the Ternary Gypsum-Based Binders with Different Types of Pozzolan
p.122

HomeKey Engineering MaterialsKey Engineering Materials Vol. 677Dosage of Silica Fume in High Performance Concrete

Dosage of Silica Fume in High Performance Concrete

Abstract:

Durability and high strength of concrete are closely associated with low porosity and generally denser material structure. This is achieved using the addition, which include also silica fume. This article deal with an effective dosage of silica fume in high performance concrete, in a proportion of 0-25 % by the weight of cement. Compressive strength, rheological behaviour and economic benefits were the main questions in this work. The expected increase in compressive strength showed itself in lower doses of silica fume, while higher doses did not produce a further increase in strength. In the case of rheological behaviour, we can confirm lower bleeding and segregation, but also faster drying of the surface layer. From the economic point of view, a small doses of silica fume are better, because then we have observed the highest increase in strength.

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Periodical:

Key Engineering Materials (Volume 677)

Pages:

98-102

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.677.98

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Online since:

January 2016

Authors:

Michal Ženíšek*, Tomáš Vlach, Lenka Laiblová

Keywords:

Compressive Strength, Economic Benefit, High Performance Concrete, Rheological Behaviour, Silica Fume

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