Session

Civil Engineering, Infrastructure and Environment

Description

The use of sustainable materials in construction has become essential due to their positive impact on the environment. In this study, binary and ternary blended mixtures of micro silica fume (SF) and nano silicon dioxide (NS) concrete mixes were employed. In order to investigate the impact of these materials on the mechanical properties and to improve the durability of concrete. Two groups of mixtures, binary and ternary blended mixes, were used as well as the control mix. In the first group, micro-SF was replaced with 3.5% and 7% by mass of ordinary Portland cement. Whereas, in a ternary blended group, micro-SF and nano silicon dioxide (NS) were replaced with 3.5% and 1%, respectively, by mass of ordinary Portland cement. A slump test was also performed to assess the fresh concrete properties of the mixes. Compressive and split tensile strengths were evaluated at different curing ages. As well, water absorption test, rapid chloride migration test, and chloride penetration test were carried out to investigate the durability properties. Results show that the replacement of cement by SF in binary blended and ternary blended mixtures reduced the workability of concrete mixes and increased the water demand. On the other hand, a considerable increase in the compressive strength, tensile strength, and durability properties of concrete was recorded. Also, the replacement of cement by 7% SF achieved significant improvements in the mechanical and durability properties of concrete.

Keywords:

multi-ring arches, ring separation, limit analysis, sliding mechanism

Proceedings Editor

Edmond Hajrizi

ISBN

978-9951-550-95-6

Location

UBT Lipjan, Kosovo

Start Date

28-10-2023 8:00 AM

End Date

29-10-2023 6:00 PM

DOI

10.33107/ubt-ic.2023.375

Included in

Engineering Commons

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Oct 28th, 8:00 AM Oct 29th, 6:00 PM

A parametric study for the structural assessment of multi-ring masonry arches considering influencing factors

UBT Lipjan, Kosovo

The use of sustainable materials in construction has become essential due to their positive impact on the environment. In this study, binary and ternary blended mixtures of micro silica fume (SF) and nano silicon dioxide (NS) concrete mixes were employed. In order to investigate the impact of these materials on the mechanical properties and to improve the durability of concrete. Two groups of mixtures, binary and ternary blended mixes, were used as well as the control mix. In the first group, micro-SF was replaced with 3.5% and 7% by mass of ordinary Portland cement. Whereas, in a ternary blended group, micro-SF and nano silicon dioxide (NS) were replaced with 3.5% and 1%, respectively, by mass of ordinary Portland cement. A slump test was also performed to assess the fresh concrete properties of the mixes. Compressive and split tensile strengths were evaluated at different curing ages. As well, water absorption test, rapid chloride migration test, and chloride penetration test were carried out to investigate the durability properties. Results show that the replacement of cement by SF in binary blended and ternary blended mixtures reduced the workability of concrete mixes and increased the water demand. On the other hand, a considerable increase in the compressive strength, tensile strength, and durability properties of concrete was recorded. Also, the replacement of cement by 7% SF achieved significant improvements in the mechanical and durability properties of concrete.