Analisis Kuat Tekan Mortar Semen Komposit GGBFS dengan Variasi Fly Ash dan Lumpur Lapindo

Mubarok, Miftakhul `Izah (2023) Analisis Kuat Tekan Mortar Semen Komposit GGBFS dengan Variasi Fly Ash dan Lumpur Lapindo. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Total emisi dari industri semen berkontribusi sebanyak 8% dari emisi CO2 global. Oleh karena itu, pengurangan konsumsi semen memiliki dampak dalam mengurangi emisi CO2. Residu atau limbah yang dihasilkan oleh berbagai industri dapat digunakan sebagai bahan tambahan atau sebagai bahan semen alternatif. Bahan-bahan tersebut diantaranya fly ash (F), ground granulated blast furnace slag (GGBFS), dan lumpur lapindo (L). Penelitian ini menganalisis pengaruh penambahan GGBFS sebesar 10% dengan variasi fly ash dan lumpur lapindo terhadap kuat tekan mortar. Variasi lumpur Lapindo yang digunakan adalah 20%, 15%, 10%, 5% dan 0% kemudian variasi fly ash yang digunakan yakni 0%, 5%, 10%, 15% dan 20%. Karakterisasi komposisi, senyawa dari tiap material fly ash, GGBFS, dan lumpur Lapindo diuji menggunakan X-Ray Fluoresence (XRF), X-Ray Diffraction (XRD). Morfologi dari sampel diuji menggunakan Scanning Electron Microscopy – Energy Dispersive-X (SEM-EDX). Pengujian kuat tekan dari sampel diuji menggunakan Universal Testing Machine (UTM). GGBFS memiliki kandungan CaO yang tinggi sehingga dapat menggantikan semen secara langsung. SiO2 yang terkandung dalam fly ash dan lumpur lapindo cukup tinggi sehingga dapat memungkinkan terjadi reaksi pozzolan yang dapat memengaruhi kuat tekan mortar. Pengujian kuat tekan dilakukan setelah proses curing mortar menggunakan air selama 7 dan 28 hari . Hasil yang didapatkan yakni terjadi peningkatan kuat tekan dari curing mortar umur 7 hari ke 28 hari. Variasi penambahan dengan nilai kuat tekan tertinggi terdapat pada komposisi fly ash 20% (F20) yakni sebesar 39,2 MPa pada umur 28 hari.
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Total emissions from the cement industry contribute as much as 8% of global CO2 emissions. Therefore, reducing cement consumption has an impact on reducing CO2 emissions. Residues or waste generated by various industries can be used as additives or as alternative cement ingredients. These materials include fly ash (F), ground granulated blast furnace slag (GGBFS), and Lapindo mud (L). This study analyzed the effect of adding 10% GGBFS with variations of fly ash and Lapindo mud on the compressive strength of mortar. Lapindo mud variations used are 20%, 15%, 10%, 5% and 0% then the fly ash variations used are 0%, 5%, 10%, 15% and 20%. Characterization of the composition, compound of each fly ash material, GGBFS, and Lapindo mud were tested using X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD). The morphology of the samples tested using Scanning Electron Microscopy – Energy Dispersive-X (SEM-EDX). The compressive strength test of the samples was tested using the Universal Testing Machine (UTM). GGBFS has a high CaO content so it can replace cement directly. SiO2 contained in fly ash and Lapindo mud is high enough to allow pozzolanic reactions to occur which can affect the compressive strength of the mortar. The compressive strength test was carried out after curing the mortar using water for 7 and 28 days. The results obtained are increased compressive strength of curing mortar aged 7 days to 28 days. The addition variation with the highest compressive strength value was found in the composition of 20% fly ash (F20) which was 39.2 MPa at 28 days old.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	fly ash, GGBFS, kuat tekan, lumpur lapindo, mortar, compressive strength, fly ash, GGBFS, lapindo mud, mortar
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA444 Reinforced concrete
Divisions:	Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Miftakhul 'Izah Mubarok
Date Deposited:	08 Feb 2023 04:32
Last Modified:	08 Feb 2023 04:43
URI:	http://repository.its.ac.id/id/eprint/96372

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