Improving Mortar Properties in Saline Environment

Fajrin, Jauhar and Pathurahman, Pathurahman and Pratama, Lalu Gita (2016) Improving Mortar Properties in Saline Environment. In: Sriwijaya International Conference on Engineering and Technology (SICEST) 2016, 8-10 November 2016, Bangka, Indonesia.

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Buildings in coastal settlement are severely subjected to the effect of saline environment. Brick wall, which consists of brick and mortar, is the most affected component degraded by such an environment. There are several methods reported in literatures for reducing the effect of aggressive environments to mortar. Most of the previous studies concentrate on introducing additional materials that might increase the overall building cost. This paper discusses the possibility of reducing the negative impact of saline environment by just increasing the proportion of cement in mortar mixes. The study was divided in two subsequent experimental stages. The first experiment was designed to select the most optimum mortar composition by varying the cement content. The research parameters includes compressive strength, water absorption and PH value of the mortar. Having obtained the most effective mortar composition through the first experiment, it was also investigated the possibility of using silica fume as a partial replacement for cement in further experimental stage. The study has proved that the cement content plays an important role in the quality of mortar. The increasing of cement content has considerably improved the compressive strength of mortar up to 370%. The optimum composition was mortar with the ratio of cement/sand of 30:70. The selected mixes has also significantly reduced water absorption by around 65%. The partial replacement of cement content with silica fume to the selected proportion further improved the properties of mortar. The compressive strength was enhanced by approximately 13%, while water absorption was reduced by 35%. The PH value seems not significantly affected by both treatments as the first experiment only increases the PH value up to 6% and further treatment decreases the PH value by only 2.5%.

Item Type: Conference or Workshop Item (Paper)
Keywords (Kata Kunci): Improvement method; mortar properties; saline environment; mortar mixes.
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
Divisions: Fakultas Teknik
Depositing User: Dr Jauhar Fajrin
Date Deposited: 16 Oct 2020 01:20
Last Modified: 16 Oct 2020 01:20

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