Enhancing value of local materials in developing countries

Mebrouki, Abderkader; Cyr, Martin; Belaribi, Nadia Belas

doi:10.1080/19648189.2009.9693188

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…NP is a result of sedimentation of volcanic ashes, which largely contain active silica, available as natural source in Algeria; pozzolanic reserves are estimated to be more than 16 Mt. Numerous studies have investigated their valorization in the civil engineering field (Hamidi et al , 2013; Mebrouki et al , 2009). To the best of our knowledge, the uses of a local NP in cementing operations for oil well have not been reported.…”

Section: Introductionmentioning

confidence: 99%

Effect of natural pozzolan on the fresh and hardened cement slurry properties for cementing oil well

Bechar

Zerrouki

2018

WJE

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Purpose Wells’ cementing is an important and costly step in the engineering sector for oil and gas well. The purpose of this study was to investigate the use of Algerian natural pozzolan (NP) in order to evaluate the influence of partial substitution of class G cement on slurry properties. Design/methodology/approach NP was characterized by X-ray fluorescence (XRF), scanning electron microscopy/energy-dispersive X-ray (SEM/EDX) and Fourier-transform infra-red spectrometry (FTIR). Their pozzolanic activity was evaluated by measuring the electrical conductivity in aqueous suspensions of pozzolan/calcium hydroxide. The replacement ration cement/NP was 10, 20 and 30 per cent, and the rheological behaviour, compressive strength properties at different ages, elastic properties, X-ray diffraction analysis, rapid chloride penetration, porosity and permeability of all slurries were investigated and compared with a standard sample. Findings The obtained results indicated that the replacement with 20 per cent by weight of cement at 21 and 28 days had a higher compressive strength (+30.62 per cent) and lower chloride penetration. Originality/value The results show the potential of the use of locally available NP in well cementing.

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Section: Introductionmentioning

confidence: 99%

Effect of natural pozzolan on the fresh and hardened cement slurry properties for cementing oil well

Bechar

Zerrouki

2018

WJE

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Volcanic Scoria as Cement Replacement

al-Swaidani¹

2018

Volcanoes - Geological and Geophysical Setting, Theoretical Aspects and Numerical Modeling, Applications to Industry and Their

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Numerous volcanic scoria (VS) cones are found in many places of the world. Many of them have not yet been investigated, although few have been used as binders for a very long time. The use of natural pozzolans as cement replacement could be considered as a common practice in the construction industry due to the related economic, ecologic and performance benefits. This chapter highlights the advantages and disadvantages of the use of volcanic scoria as cement replacement in concrete mixes in terms of fresh and hardened concrete properties. The chemical and mineralogical composition of volcanic scoria samples collected from 36 countries is presented in this chapter, with some further analysis. The effects of using volcanic scoria as cement replacement on some paste, mortar and concrete properties, such as the setting times, the heat of hydration, the compressive strength, the water permeability and the chloride penetrability, have been studied. The improvement in resistance against the chemical attack of volcanic scoria-based cement mortar has also been highlighted. Some estimation equations depending on the data available in literature have also been derived from the analyzed data. The modification of the microstructure of VS-based cement paste has been confirmed, as well.

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Enhancing value of local materials in developing countries

Cited by 2 publications

References 7 publications

Effect of natural pozzolan on the fresh and hardened cement slurry properties for cementing oil well

Effect of natural pozzolan on the fresh and hardened cement slurry properties for cementing oil well

Volcanic Scoria as Cement Replacement

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