Concrete is considered as an essential material required in construction. If the decreasing cement quantity used in concrete by replacing it with pozzolanic materials leads to required concrete properties, therefore, decreasing cost and the environment protection is the main goal.

1. Introduction. The global population is experiencing a rapid increase accompanied by significant advancements in high-rise construction and the associated infrastructure development [1 – 3], and there is an increasing demand for concrete, a versatile material used in construction [4, 5].Ordinary Portland cement (OPC) is a widely …

The mixtures with OPC and fly ash alone had a reduced workability due to the larger particle size, while the addition of silica fume increased the workability with …

The use of Silica Fume (SF) in short period of time had one of the most dramatic impacts on the industry's ability to routinely and commercially produce SF modified concrete of flowable in nature but yet remain cohesive, which in turn would develop both high early and high later-age strengths including resistant to aggressive environments. This paper …

Several industrial waste materials, such as limestone powder, fly ash, slag, sawdust ash, silica fume and rice husk ash, have been used in the production of SCC in the past.

High performance concrete appears to be better choice for a strong and durable structure. A large amount of by-product or wastes such as fly-ash, copper slag, silica fume etc.

The use of silica fume will not significantly change the unit weight of concrete. Silica fume will produce a much less permeable and high strength concrete, but it will not produce a concrete with a higher mass per unit volume. Against these backdrops, this review is focused on the effect of silica fume on mechanical properties of concrete.

Tlie highest strength was obtained for the high-volume fly ash concrete followed by the control portland cement concrete, slag concrete, silica fume concrete, and concrete incorporating a ...

-Fatigue of Reinforced Silica Fume Concrete Beam under the . Environment of Water or Chloride Solution, by N. Takagi, M. Ikeda, and T. Kojima-Wet-Mix Silica Fume Shotcrete: Effect of Silica Fume Form, by D.R. Morgan and J. Wolsiefer, Sr.-Silica Fume-Polymer Mortars for Rehabilitation of Bridge Decks, by T.A. Bürge

These three essential types are ordinary concrete, concrete containing silica fume (SF), and concrete containing fly ash (FA). The WGP replacement ratios from cement weight were 0 %, 5 %, 10 %, 15 %, and 20 %. Some mechanical and other concrete properties have been investigated at both hardened and fresh stages.

by- product like silica fume, fly-ash and so on. In this paper we have replaced cement totally with silica fume and fly-ash. By replacing with the proportions of fly-ash (80%) and Silica fume (20%), it showed a greater strength result. Keywords: Silica fume, Fly Ash, Total Replacement of cement, geo-polymer concrete. 1. INTRODUCTION

fly ash accordingly in the range of 0% (without fly ash), 10%, 20%, 30% & 40% by weight of cement for M-25 and M-40 mix. Concrete mixtures were produced, tested and compared in terms of ...

Effects of Fly Ash, Silica Fume, and Ground-Granulated Blast Slag on Properties of Self-Compacting High Strength Lightweight Concrete Sherif Yehia, Sharef Farrag, Kareem Helal, and Shahinaz El-Kalie

product or wastes such as fly-ash, copper slag, silica fume etc. Are generated by industries, ... silica fume and its effects on concrete properties. The main parameter investigated in this study ...

concrete using silica fume replacing cement, it is observed that, there may be some marginal loss of strength initially but the same improves effectively both with the age and

It is important to note that while fly ash, GGBS, silica fume, and limestone fines are industrial wastes, rice husk ash, palm oil fuel ash, and sugarcane bagasse ash are agricultural wastes. ... the effects of …

An investigation was undertaken to study the effects of fly ash and silica fume in concrete. Compressive strengths at different levels of replacements were found. ... Cement replacement levels by fly ash were 0, 10, 20, 30, and 40 percents and by silica fume were 0,4, 8, 12, and 16 percents. Thus a total of 25 mixtures were studied. Strengths ...

The experimental results show that when the replacement rate of mineral admixture is 25%, and the proportion of fly ash and silica fume is 3:2, the compressive strength and splitting tensile strength, fluidity, and workability of steel fiber reinforced concrete can be greatly improved.

The replacement levels of cement by fly ash were 35 and 50% by volume and 50% by weight; effectiveness of mortars made with four types of fly ash at two water/cement ratios, 0.47 and 0.65, were ...

Effect of Partial Replacement of Cement by Mixture of ... i.e. metakaoline, fly ash and silica fume (Mala et al., 2013). ... (1988) stated that the partial replacement of cement by fly ash up to 35 percent in concrete the positive change in strength at later age. Udoeyo et al. (2004) reported that wood ash affected

Cement is one of the largest used construction materials, the production of which releases large quantity of carbon di oxide. Reduction of cement in concrete will help to reduce carbon foot print and also environmental impact. With the advent of industrialization, large quantity of …

In addition, the dumping of industrial wastes is also a great environmental concern. This research is an attempt to produce low-cost and sustainable aerated …

The effect of fly ash and silica fume on self-compacting high-performance concrete. ... 50%, 65% and 75% cement replacement by FA, SF was maintained at 10% constant replacement. The water/binder ...

In this study, the effect of content (0.0, 31.4 and 47.1%, by volume), and partial (0, 10 wt% and 20 wt%) replacement of cement with fly ash (FA) and silica fume (SF) on the density, water absorption, compressive strength and thermal conductivity of concrete was researched after 7-day and 28-day standard curing as well as …

To study the effect of partial replacement of cement with fly ash and silica fume. Evaluation of the compressive strength of fly ash and silica fume concrete. To find out the optimum percentage of replacement of fly ash and silica fume. To know the strength variations with use of fly ash and silica fume to the normal concrete.

The new binders would exist sustainably in the cement harden as a result of the chemical reaction between the product of hydrated cement called gel [Al(OH)3] with micro silica (amorphous SiO2) [4]. This report demonstrates the result of the investigation which is about the effect of silica fume and fly ash on alumina cement.

The various replacement levels of cement by fly ash were0%, 30% and 40% and natural sand by manufactured sand were 0%, 50% and . ... October 2015 DOI 10.7603/s40707-014-0021-3 Effects of Fly Ash, Silica Fume, and GroundGranulated Blast Slag on Properties of SelfCompacting High Strength Lightweight Concrete Sherif Yehia, …

EFFECT OF SILICA FUME ON IMPORTANT PROPERTIES OF ... OPC. •At 15% replacement of Silica Fume cement has improved compressive strength due to its higher percentage of silica. •More recent studies have shown Silica fume has uses ... In every mix proportions of silica fume and fly ash concrete there is 70% of fly ash and 30% of …

8. Class F is fly ash produced from burning anthracite or bituminous coal, and Class C is produced from the burning of sub-bituminous coal and lignite. Class F is low in lime, under 15 percent, and …

This study distinguishes itself from previous research by systematically investigating the synergistic effects of fly ash and alccofine as supplementary …