Self-consolidating, concrete, durability, mechanical properties, manufactured aggregate.
Civil Engineering | Structural Materials
Limitations to the sources of aggregates and the unavailability of sand is becoming a problematic issue for concrete production. A novel technology of manufactured aggregates can produce well graded round aggregates that can substitute natural aggregates while maintaining the same characteristics needed and preserving the resources. Self-Consolidating Concrete (SCC) using manufactured aggregates is assessed in this experimental work to understand the variability of workability properties and mechanical properties with the changes in w/c ratio and percentages of Coarse Aggregates and Manufactured Sand to Natural Sand in order to choose the best mixture that satisfies an adequate overall performance. Targeting compressive strength improvement, the SCC mixes included the use of Silica Fume (SF) and Polycarboxylate Superplasticizer which exhibited a strength improvement when compared to normal SCC. After performing 6 different trial mixtures, the use of manufactured rounded aggregates of percentages 73% from total fine aggregates proportion, 2.7% of Polycarboxylate superplasticizer, and around 8% Silica Fume (SF) from total cementitious materials can succeed in reaching high strength concrete with optimum mechanical properties and a noticeable workability improvement when compared to natural aggregates.
Author ORCID Identifier
Rabab Raydan - https://orcid.org/ 0000-0001-8873-2959
Farah Chamseddine - https://orcid.org/0000-0003-3355-2891
Ali Jahami - https://orcid.org/0000-0003-4851-1822
Oussama Baalbaki - https://orcid.org/0000-0002-4854-0247
Jamal M. Khatib - https://orcid.org/0000-0002-4393-6728
Adel Elkordi - https://orcid.org/0000-0002-1487-8469
Raydan, Rabab; Chamseddine, Farah; Jahami, Ali; Baalbaki, Oussama; Khatib, Jamal; and Elkordi, Adel
"PRODUCTION OF LOW-COST SELF-CONSOLIDATING CONCRETE (SCC) USING MANUFACTURED AGGREGATES,"
BAU Journal - Science and Technology: Vol. 3:
2, Article 3.