CD Skripsi

Porositas Dan Sorptivity Beton Blended Pofa Dengan Campuran Silika

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Abstract
The increased use of concrete as a building material will result in an increase in the use of cement. The use of cement in very high quantities will have a significant effect on increasing CO2 emissions and global warming. Cement substitution can help to reduce the excessive use of cement. Furthermore, cement substitution can help reduce the residual cement hydration reaction, namely calcium hydroxide, allowing cement bond reactions to occur. Riau Province's oil palm waste is increasing year by year. Palm oil waste in the form of residue from the combustion of palm oil shells and coir is known as Palm Oil Fuel Ash (POFA). POFA can be used as a cement substitute material, but not all POFAs are reactive. The addition of silica as a cement substitution material will aid in increasing the reactivity of blended POFA concrete. The results of porosity and sorptivity tests decreased as the age of the test increased. The PCC POFA SP concrete test had a higher porosity value than the control concrete by 1.07%, but it was lower than the POFA SF PCC concrete, which had a porosity value of 14.402% at 28 days old. The highest value in the sorptivity test was 0.520 mm/m0.5 at 28 days old in the PCC POFA SP concrete variety. The POFA SP PCC variation had the highest sorptivity at each test age, while the PCC variation had the lowest. The microstructural surface of the PCC POFA SP variation looks less porous than PCC POFA and PCC POFA SF but does not exceed the surface of the PCC variation which looks slightly porous but has a rough surface. PCC POFA SP concrete has a more reactive surface, this is caused by the hydroxyl compounds contained in it, but in this concrete, there is an O-C-O stretching vibration which causes the concrete structure to become unstable. PCC POFA SF concrete improves the quality of concrete due to O-T-O stretching vibrations.
Keywords : POFA, Silica Fume, Silica Precipitation, Porosity, Sorptivity, SEM, and FTIR

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1807111196

Penerbit

Pekanbaru : Universitas Riau – Fakultas Teknik – Teknik Sipil., 2022

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1807111196

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK SIPIL

Info Detail Spesifik

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Pernyataan Tanggungjawab

DAUS

Versi lain/terkait

Lampiran Berkas

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