| Autor: |
Ash-Shu'ara Marafa SALMAN, Mutiu Adelodun AKINPELU, Gobir Abdullahi AHMED, Ibrahim Abiodun RAHEEM |
| Jazyk: |
English<br />French |
| Rok vydání: |
2021 |
| Předmět: |
|
| Zdroj: |
Journal of Materials and Engineering Structures, Vol 8, Iss 2, Pp 301-311 (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2170-127X |
| Popis: |
Variation in coarse aggregate types, shapes, textures and means of production are known to have a profound effect on mechanical properties of concrete such as compressive and flexural strengths. Two coarse aggregates; uncrushed gravel (UG) and crushed granite (CG) were used as coarse aggregates. Coarse aggregates were partially replaced with crushed granite at the incremental rate of 20% by weight of total coarse aggregate from 0% to 100%. Mix proportion of 1:2:4 and the water-cement ratio of 0.65 were used. The concrete design targeted compressive strength of 20Mpa on the 28th day. Aggregate Crushing Value (ACV) test was conducted on various coarse aggregate combinations. Compressive strength and modulus of rupture were determined at various mix proportion of concrete containing different per-cent of coarse aggregates replacements at curing ages; 7th, 14th, and 28th days. Across curing ages, an increase in percent of crushed granite lead to an increase in compressive strength (CS) and modulus of rupture (MOR). Statistical analysis established strong positive relationship between percent of CG replacement and CS at 28th day (R2 = 0.908 p 0.01), between percent of CG replacement and MOR at 28th day (R2 = 0.832 p 0.05), and between CS at 28th day and MOR at 28th day for different mix proportions (R2 = 0.878 p 0.01). |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
