Durability of mortar containing basalt and hashma wastes dust from stones indust

Document Type : Research articles

Authors

1 Department civil Engineering, PHI-Pyramids Higher Institute for Engineering and Technology, Giza, Egyp

2 Civil Engineering Department, Faculty of Engineering at Shoubra, Benha University, Egypt

Abstract

The durability of the hardened OPC mortar made with hashma powder and basalt is examined in this study. Different proportions of hashma powder and basalt powder were added to partially replace the fine aggregate and cement, respectively. Strength and durability tests on samples of varying ages were used to assess the impact of hashma and basalt replacement on the behavior of hardened mortar. The experimental work was carried out to assess the impact of variation of basalt and hashma by replacement on different ages of mortar samples; compressive strength, sorptivity, strength as well as sulfate and acid resistance were investigated. The study found that replacing varying percentages of basalt and hashma with cement and sand resulted in a significant improvement in the mortar aspects mentioned above. The compressive strengths of samples containing (5% and_10%) basalt powder as cement samples were found higher than the control mix B0(without waste powders), while the samples containing hashma as sand achieved a higher level than mixes containing basalt as cement. In addition, the best mix among all groups mixture containing 5%BS and 30% HM (mix B5H30) improved compressive strength reached 47% higher than the control mix (without waste powders).And the loss relative residual compressive strength percentage after immersion in magnesium sulfate and nitric acids solution (180 days) was found to be 30.8% and 46.8% lower than the control mix (without waste powders) by incorporating 5%BS as cement with 30% HM as sand (mix B5H30) respectively.

Keywords

Engineering Research Journal (Shoubra)
Volume 53, Issue 4
October 2024
Pages 57-67

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