Physical Mechanical Properties and Durability of Mortars Containing Tuff from Burkina Faso as Partial Substitution of CEM I
| Autor: | Adamah Messan, Sidiki Kabre, Abdou Lawane, Nafissatou Savadogo |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Cement
Materials science Metallurgy 0211 other engineering and technologies 02 engineering and technology General Medicine Pozzolan 021001 nanoscience & nanotechnology Durability law.invention Portland cement Compressive strength law 021105 building & construction Acid rain Mortar 0210 nano-technology Shrinkage |
| Zdroj: | American Journal of Civil Engineering and Architecture. 6:46-53 |
| ISSN: | 2328-398X |
| Popis: | This paper presents the feasibility of using locally available limestone Tuff in Burkina Faso as a partial replacement for CEM I artificial Portland cement. To this end, standard tests were carried out in the laboratory on mortars containing variable proportions of Tuff in partial substitution of CEM I cement. These include heat of hydration, setting time, total shrinkage, compressive strength, capillary absorption and resistance to acid attack. The experimental results obtained show that Tuff can be used as a natural pozzolan. It is also noted that the incorporation of Tuff into cement has virtually no influence on the transfer properties of mortars. However, at a rate above 15% partial substitution of CEM I, the mechanical strength of mortars is considerably reduced. This is probably linked to the finesse of the Tuff used. A finer shredding improved the mechanical activity index. However, we note a better resistance to acid attack (sulphuric acid that can come from acid rain) of mortars containing Tuff compared to mortar based on artificial Portland cement. All these results have shown that the Tuff used in this work can be a solution for reducing CO2 emissions in cement production and also in reducing the price of cement in Burkina Faso. |
| Databáze: | OpenAIRE |
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