Difference between strength by Schmidt hammer test and destructive compressive test of concrete having partial replacement of sand by marble dust
| Author(s) | : | Engr. Fawad Ahmad, Engr. Zeeshan Ahad, Engr. Fawad Khan, Engr. Liaqat ali, Engr. Muhammad Sheeraz |
| Institution | : | Lecturer, Dept. of Civil Engineering, Iqra National University, Peshawar, Khyber Pakhtunkhwa, Pakistan |
| Published In | : | Vol. 5, Issue 3 — March 2018 |
| Page No. | : | 688-694 |
| Domain | : | Engineering |
| Type | : | Research Paper |
| ISSN (Online) | : | 2348-4470 |
| ISSN (Print) | : | 2348-6406 |
Concrete is a mixture of aggregate, cement and water and plays a dynamic role in infrastructure development. Theproblem we are facing is a growing demand for industrial production and an increase in the consumption of aggregates,which immediately led to a decrease and a lack of aggregates. This situation must show new specific options for researchers.Because of the large amount of marble is produced. During the formation, the marble is ground and marble dust is obtainedas a by-product. This study focuses on the performance of marble dust as a partial substitute of sand in concrete mixtures.The purpose of this study was to study the effect of marble dust on the strength of concrete as a partial substitute for fineaggregate (sand) in concrete and also to study the difference in strength between the Schmidt hammer and the destructivetest. Marble Concrete was obtained by replacement of marble dust with 5%, 10%, 15%, 20%, 25% and 30% to fineaggregates led to the formation of cylindrical concrete samples and finally compared to the control of cylindrical concretesamples. Cylindrical concrete samples were casted and cured and compression tests were performed for 14 and 28 daysusing the Schmidt hammer test and the destructive compression test using standard test procedure. The study shows thatsubstitutes to marble powders of 5%, 10%, 15%, 20%, 25% and 30% as fine aggregates increase the compressive strength ofnormal concrete. The maximum value of this unit is 10% in 14 days and 10% in 28 days. By comparing the difference instrength between the Schmidt hammer test and the destructive compression test, the average strength difference between for14 and 28 days was 17.2% and 14.9% respectively
Engr. Fawad Ahmad, Engr. Zeeshan Ahad, Engr. Fawad Khan, Engr. Liaqat ali, Engr. Muhammad Sheeraz, “Difference between strength by Schmidt hammer test and destructive compressive test of concrete having partial replacement of sand by marble dust”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 5, Issue 3, pp. 688-694, March 2018.
