Assessing the influence of cellulosic pulp replacement with polypropylene on cement matrix properties

Session

Civil Engineering, Infrastructure and Environment

Description

Cellulosic pulp is widely used in the production of cement composite due to its sustainable characteristics, availability and low cost. To improve durability and mechanical properties, synthetic fibers such as polypropylene (PP) are added to the matrix. In this study, fiber cements were reinforced with 1.4% PP fibers, replacing Kraft pulp at concentrations of 5% and 10% in relation to the cement mass. The performance of the cementitious composites was evaluated after 28 days age and 200 cycles of accelerated aging. The results showed that the combination of PP fibers with Kraft pine pulp is a viable option for the production of fiber cement, resulting in significant improvements in crack resistance. The presence of PP fibers increased the flexural strength (MOR), reaching 10 MPa for the PNB3.6%PP1.4% treatment. Furthermore, there was an improvement in toughness and a decrease in porosity and water absorption with the replacement. These fibers play a crucial role in improving the mechanical and physical properties of cementitious composites.

Keywords:

Durability, synthetic fibers, accelerated aging, Kraft pulp.

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.2023.351

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

Assessing the influence of cellulosic pulp replacement with polypropylene on cement matrix properties

UBT Lipjan, Kosovo

Cellulosic pulp is widely used in the production of cement composite due to its sustainable characteristics, availability and low cost. To improve durability and mechanical properties, synthetic fibers such as polypropylene (PP) are added to the matrix. In this study, fiber cements were reinforced with 1.4% PP fibers, replacing Kraft pulp at concentrations of 5% and 10% in relation to the cement mass. The performance of the cementitious composites was evaluated after 28 days age and 200 cycles of accelerated aging. The results showed that the combination of PP fibers with Kraft pine pulp is a viable option for the production of fiber cement, resulting in significant improvements in crack resistance. The presence of PP fibers increased the flexural strength (MOR), reaching 10 MPa for the PNB3.6%PP1.4% treatment. Furthermore, there was an improvement in toughness and a decrease in porosity and water absorption with the replacement. These fibers play a crucial role in improving the mechanical and physical properties of cementitious composites.