Influence of the addition of 2%, 3% and 5% of fly ash on the physical-mechanical properties of cement mortar

Loading...
Thumbnail Image

Journal Title

Journal ISSN

Volume Title

Publisher

LACCEI Inc.

Abstract

The objective of this work was to evaluate the influence of the addition of coal fly ash, a residue from the manufacture of clay brick, in the manufacture of cement mortar; in order to reuse construction waste in the creation of new materials, reducing the cost of raw materials and contributing to the environment. The standard cement mortar designed for a resistance of 125 Kg / cm2 was compared with additions of 2%, 3% and 5% of fly ash, in axial compression, absorption and capillarity tests. The mortars with addition of 2% and 3% of fly ash reached the designed strength but did not exceed the standard mortar, with strengths of 129.04 Kg / cm2 and 128.33 Kg / cm2 respectively, while the addition of 5% reached 123.05 Kg / cm2. Capillarity with the addition of 2% decreases 29.59% in relation to the standard mortar, at 3% it increases 1.52% and at 5% it decreases 2.49%; the absorption in the 2% addition varies with the standard by 0.29%, in the other additions it increases. It is shown that the fly ash works as an artificial pozzolana, favoring the physical-mechanical properties of the hydraulic cement mortar, being viable its use in small additions.

Description

Citation

Endorsement

Review

Supplemented By

Referenced By

Creative Commons license

Except where otherwised noted, this item's license is described as LACCEI License