Pengaruh Penambahan CaCO3 pada Paving High Volume Fly Ash

Rahayu, Melati Kurnia (2024) Pengaruh Penambahan CaCO3 pada Paving High Volume Fly Ash. Diploma thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pemanfaatan fly ash merupakan solusi dari permasalahan penumpukan limbah batu bara dan CO2 yang dihasilkan dari pembuatan semen. High Volume Fly ash (HVFA) sudah banyak dikembangkan pada beton. Disisi lain keberlimpahan bahan baku CaCO3/Limestone juga perlu dimanfaatkan semaksimal mungkin. Banyak penelitian yang sudah membahas mengenai pemanfaatan CaCO3 dan/atau HVFA. Namun belum ada yang mencoba menggabungkan keduanya pada paving block. Oleh karena itu, pengembangan dari penelitian ini adalah mengaplikasikan CaCO3 dan HVFA pada paving block yang diharapkan dapat memiliki kuat tekan mencapai kelas A. Menurut SNI 03-0691-1996 bata beton (paving block) rata-rata kuat minimal tekan 40 MPa, ketahanan aus maksimal 0,090 mm/menit, dan penyerapan maksimal 3%. Penelitian ini membahas mengenai komposisi optimum CaCO3 pada paving HVFA. Penelitian ini terdiri dari 10 variasi dengan persentase CaCO3 terhadap semen yang digunakan (0%, 2,5%, 5%, 7,5%, 10%) dan persentase fly ash terhadap pengikat (50% dan 60%). Penelitian tugas akhir ini terdiri dari pengujian material, mix design, pembuatan, perawatan, dan pengujian paving HVFA. Pengujian dilakukan untuk mengetahui performa paving seperti uji kuat tekan pada 7, 14, 28, 56 sedangkan uji keausan, resapan, dan UPV pada umur 28 hari, serta SEM-EDX pada 56 hari. Penambahan 5% CaCO3 merupakan penambahan dengan performa optimal pada paving di semua pengujian. Pada variasi F60L5 paling optimal pada pengujian kuat tekan mencapai 57,76MPa, ketahanan aus 0,00929 mm/menit, dan resapan 1,785%. Sesuai dengan SNI 03-0691-1996 masuk ke mutu A atau dapat dimanfaatkan sebagai jalan. Penambahan CaCO3 pada variasi F50L5 meningkatkan kuat tekan sampai 40% dan pada variasi F60L5 meningkat sampai 4% dari yang tidak menggunakan CaCO3.
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The utilization of fly ash is a solution to the problem of coal waste accumulation and CO2 generated from cement manufacturing. High Volume Fly ash (HVFA) has been widely developed in concrete. On the other hand, the abundance of CaCO3/Limeston raw materials also needs to be utilized as much as possible. Many studies have discussed the utilization of CaCO3 and/or HVFA. However, no one has tried to combine the two in HVFA paving. Therefore, the development of this research is to apply CaCO3 to HVFA which is expected to have a compressive strength reaching class A. According to SNI 03-0691-1996, the average minimum compressive strength is 40 MPa, maximum wear resistance is 0.090 mm/min, and maximum absorption is 3%. This study discussed the optimum composition of CaCO3 in HVFA paving. The research consisted of 10 variations with the percentage of CaCO3 to cement used (0%, 2,5%, 5%, 7,5%, 10%) and the percentage of fly ash to binder (50% and 60%). This final project research included material testing, mix design, manufacturing, curing, and testing of HVFA paving. The tests were conducted to determine the performance of the paving, such as compressive strength tests at 7, 14, 28, and 56 days, while wear, absorption, and UPV tests were conducted at 28 days, and SEM-EDX at 56 days. The addition of 5% CaCO3 showed optimal performance in all paving tests. The F60L5 variation was the most optimal in the compressive strength test, reaching 57.76 MPa, with a wear resistance of 0,00929 mm/min and absorption of 0,785%. According to SNI 03-0691-1996, this falls into quality A or can be used for roads. The addition of CaCO3 in the F50L5 variation increased the compressive strength by up to 40%, and in the F60L5 variation, it increased by up to 4% compared to those without CaCO3.

Item Type:	Thesis (Diploma)
Uncontrolled Keywords:	Paving, High Volume Fly ash (HVFA), Fly ash, limestone, CaCO3, Beton, Concrete
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) T Technology > TA Engineering (General). Civil engineering (General) > TA418.16 Materials--Testing. T Technology > TA Engineering (General). Civil engineering (General) > TA433 Strength of materials. T Technology > TA Engineering (General). Civil engineering (General) > TA681 Concrete construction
Divisions:	Faculty of Vocational > Civil Infrastructure Engineering (D4)
Depositing User:	Melati Kurnia Rahayu
Date Deposited:	23 Aug 2024 04:52
Last Modified:	23 Aug 2024 04:52
URI:	http://repository.its.ac.id/id/eprint/113103

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