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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 …
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Download Citation | Experimental Investigation on Partial Replacement of Cement with Metakaoline, Fly Ash and Silica Fume in Concrete | The process of construction begins some thousand years ago ...
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The workability, compressive strength of silica fume and fly ash concrete of different ratio, different mix proportions with constant water cement ratios have been investigated. …
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Cement M2 . Cement+ 10% fly ash M3 . Cement 10% glass powder M4 . Cement + 5% fly ash+ 5%glass powder M5 . Cement + 20% fly ash M6 . Cement + 20% glass powder M7 . Cement + 10% fly ash+ 10%glass powder M8 Cement + 30% fly ash M9 . Cement + 30% glass powder M10 Cement + 15% fly ash+ 15%glass powder M11 . Cement + …
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The effect of silica fume on the fresh and hardened properties of fly ash-based self-compacting geopolymer concrete (SCGC) was investigated in this paper. The work focused on the concrete mixes with a fixed water-to-geopolymer solid (W/Gs) ratio of 0.33 by mass and a constant total binder content of 400 kg/m3. The mass fractions of …
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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 …
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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. …
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1. Introduction. For many years, concrete's tremendous strength had made it a popular building material. There was a significant need in the construction sector for environment friendly and cost-effective concrete [1], [2], [3].Use of OPC in concrete raises production costs and contributes to the greenhouse impact and global warming [4], …
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This paper investigates the individual effects of Silica Fume and Fly Ash as a partial replacement of Ordinary Portland Cement (OPC) on water permeability, compressive …
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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 ...
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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 ...
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The research objective was to assess the permeability of concrete made with porous limestone and non-porous aggregates. Fifty-eight concrete mixes were made and tested to study the effects of fly ash, silica fume, and aggregate type on the permeability of concretes. Class F fly ash and silica fume were used at the levels of 10 to 50 %, and 5 …
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Effect of Replacement of Cement by Fly Ash and Silica Fume - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view …
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FA, or pulverised fuel ash, is a byproduct of coal-fired power plants and is used as a mineral additive in cement and concrete. Fig. 1 shows a typical layout of a coal-burning generating station. Pulverized coal is blown into the burning zone of the furnace, where its combustible constituents, mainly carbon, hydrogen, and oxygen, ignite at …
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9 RESULTS: The optimum percentage of cement replacement by flyash is 30% and silica fume is 12% for achieving maximum cube compressive, cylinder compressive, split …
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Efficiency of calcined kaolin and silica fume as cement replacement material for strength performance. Cem Concr Res, 35 (2005), ... D.M. Gil, G.L. Golewski, Effect of Silica Fume and Siliceous Fly Ash Addition on the Fracture Toughness of Plain Concrete in Mode i, in: IOP Conf Ser Mater Sci Eng, Institute of Physics Publishing, …
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The mix containing 15% silica fume and 30% fly ash as cement replacement produced 234.568 KgCO 2 /m 3, a great reduction of 42.63% of embodied CO 2 emission as compared to control mix at 408.88 KgCO 2 /m 3. 5. With the substitution of cement with silica fume and coal fly ash, cost of AAC greatly reduced.
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Effects of Silica Fume and Fly Ash as Partial Replacement of Cement on Water Permeability and Strength of High Performance Concrete. December 2013. …
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Of the solutions proposed to reduce this level of CO 2 emissions from cement production, materials such as fly ash, silica fume, as well as ground granulated and granulated blast furnace slag can ...
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overall improvement of concrete properties, but also promotes concrete as a sustainable material since this reduces CO2 emitted by the cement production process [4-7]. Moreover, SCMs are typically included in a concrete matrix as replacement of cement, either by volume or by weight. Silica Fume (SF), Fly Ash (FA), and Ground-
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The effect of Silica Fumes and Fly Ash as a partial replacement of Ordinary Portland Cement on compressive strength has been studied. To study this properties of concrete, the water cement ratio of 0.45 was taken. Five types of mix proportions were used to cast the test specimens for both groups. The replacement levels of OPC by fly ash and ...
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Nevertheless, owing to the high pozzolanic reaction and the micro-filler effect of SF than that of FA, there was an improvement in the compressive strength of Portland-fly ash-silica fume concrete. Silica fume is very effective in the development of HPC. Wongkeo et al. [7] reports similar observations. Download: Download high-res image …
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Title: Fly Ash, Slag, Silica Fume, and Rice Husk Ash in Concrete: A Review Author(s): V. M. Malhotra Publication: Concrete International Volume: 15 Issue: 4 Appears on pages(s): 23-28 Keywords: admixtures; blast furnace slag; fly ash; hydraulic cements; pozzolans; rice husk ash; silica fume; Materials Research DOI: Date: 4/1/1993 …
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The positive effects of fly ash as a partial replacement of cement on the durability of concrete are recognized through numerous researches; however, the extent of improvement depends on the ...
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The effects fly ash (FA), curing time (t), water to cement ratio (w/c %) and d 10 of the cement mortar were separated as follows:Compressive strength (σ c ) (MPa) of cement mortar only ...
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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.
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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
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REVIEW PAPER ON PARTIAL REPLACEMENT OF CEMENT WITH SILICA FUME AND ITS EFFECTS ON CONCRETE PROPERTIES Ram Kumar1, Er. ... In the journey of research Silica Fume, fly ash, ground granulated blast furnaces slag etc are found ... combined effect of silica fume at 4% & 12% with steel fiber at 0.5%, 1.0% & 1.5% of …
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Effect of silica fume and fly ash on the stability of bound chlorides in cement mortar during electrochemical chloride extraction ... Increasing the SF replacement level from 0% to 5% led to a more significant decrease in the bound chloride concentration, whereas further increasing the SF content from 5% to 10% only resulted in a negligible ...
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DOI: 10.1016/j.conbuildmat.2019.117561 Corpus ID: 213671526; Microstructural study of Portland cement partially replaced with fly ash, ground granulated blast furnace slag and silica fume as determined by pozzolanic activity
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