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Strength and durability performance of concrete cast using permeable formwork liner

Journal of Building Pathology and Rehabilitation, ISSN: 2365-3167, Vol: 7, Issue: 1
2022
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Article Description

The controlled permeable formwork (CPF) liner is a novel way to improving the quality of cover zone of concrete. This technique is used to remove excess water and trapped air from the near surface of fresh concrete while retaining small particles such as cement and other fine particles. As a result, the concrete’s surface zone has a lower water-to-cement ratio, lower surface porosity and more cement content. This study looked at the effect of CPF liner on concrete’s strength, durability and chemical resistance. Three different water-to-cement ratios (0.48, 0.41, and 0.31) were used to cast concrete samples against a CPF liner and an impermeable formwork (IMF). At various ages, the compressive strength, water absorption, sorptivity, hydrochloric acid and sulphate resistance tests were performed. The findings revealed that CPF concretes had an excellent resistance to water absorption and sorptivity by 15–30% and 32–67% respectively. The residual compressive strength of CPF concrete was more by 9–144% compared to IMF concretes under hydrochloric acid environment.

Bibliographic Details

Selvaraj Kandasamy; Mani Gowthaman; Palanisamy Gowdhamramkarthik; Jagajeevanram Vengadesh Marshall Raman; Balakrishnan Magenthiran

Springer Science and Business Media LLC

Engineering

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