Enhancing value of local materials in developing countries. Case of an Algerian pozzolan

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

doi:10.3166/regc.13.1263-1278

Cited by 1 publication

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“…This can be explained by the reduction of hydration heat on the binder system with the presence of VS [91]. A significant relationship (R 2 ≈ 0.9) between initial and final setting times was obtained by the author depending on data collected from other papers [20,62,71,72,75,79,89,91], as clearly shown in Figure 4. So, knowing initial setting time, the final setting time of the VS-based cement paste can be predicted by using the equation shown in Figure 4.…”

Section: Setting Timesmentioning

confidence: 85%

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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Section: Setting Timesmentioning

confidence: 85%

Volcanic Scoria as Cement Replacement

al-Swaidani¹

2018

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

View full text Add to dashboard Cite

show abstract

Enhancing value of local materials in developing countries. Case of an Algerian pozzolan

Cited by 1 publication

References 0 publications

Volcanic Scoria as Cement Replacement

Volcanic Scoria as Cement Replacement

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