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All Journal Jurnal Teknologi dan Manajemen
Firdaus, Arga Agung
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Engineering

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Optimisation of Compressive Strength of Fast Track Concrate Using Superplasticizer and Accelerator as Bridge Slab of Upper Structure Firdaus, Arga Agung; Rahman, Aulia; Qomariah, Qomariah
Jurnal Teknologi dan Manajemen Vol 6, No 1 (2025): January
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat ITATS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31284/j.jtm.2025.v6i1.6348

Abstract

Fast track concrete is designed to accelerate the construction process, particularly in pouring operations. This study aims to determine the optimal early-age compressive strength of concrete applied to bridge decks, where flexural strength testing will be conducted. The admixtures used are superplasticizer (SP) and accelerator (AC). The dosages used are 0.8% and 1.2% of cement weight for superplasticizer, and 2.7% and 4.5% of cement weight for accelerator. Compressive strength testing is conducted at 6 hours, 1 day, 7 days, and 28 days after casting.The mix combination used includes SP 0.8% – AC 2.7%, SP 0.8% - AC 4.5%, SP 1.2% - AC 2.7%, and SP 1.2% - AC 4.5%. The concrete design uses a strength of fc’30 MPa with cylindrical test specimens. The results show that compressive strength increases with age. Flexural strength testing is applied to a bridge deck slab measuring 1 x 0.5 x 0.1 m, tested at 3 days of age. The concrete mix uses fc’30 with an SP dosage of 1.2% and AC dosage of 4.5% of cement weight. In the flexural test, the average load-bearing capacity is 40 kN.
Co-Authors Aulia Rahman Qomariah Qomariah