The Effect Of Coconut Fiber Ash And Rice Husk Ash As Cement Substitutes On The Compressive Strength Of Concrete F’c 20

DOI

10.2991/978-94-6463-678-9_13How to use a DOI?

Keywords

Coconut Fiber Ash; Rice Husk Ash; Concrete Compressive Strength

Abstract

Indonesia is known as a country rich in natural resources that can be utilized, and it is actively engaged in development across various regions. This increase in development has also led to a growing demand for concrete production materials. Cement is one of the essential components in concrete manufacturing, however, its production process requires significant energy. To ensure the availability of cement and reduce this energy demand, exploring alternative cement replacement materials is crucial. Among the alternative materials that can be used coconut and rice. This study used a mixture of Coconut Fiber Ash (CFA) and Rice Husk Ash (RHA) with variation 0% CFA + 0% RHA, 1% CFA + 7.5% RHA, 1% CFA + 10% RHA, 1% CFA + 12,5% RHA, and 1% CFA + 15% RHA. The compressive strength test for normal concrete and mixtures were conducted at 7 days, 14 days, and 28 days. The tes results showed 0% CFA + 0% RHA, 1% CFA + 7.5% RHA, 1% CFA + 10% RHA, 1% CFA + 12,5% RHA, and 1% CFA + 15% RHA at 28 days showed compressive strength of 22.45 MPa, 23.11 MPa, 21.50 MPa, 18.49 MPa, and 17.17 Mpa. Among these variations, variation of 1% CFA + 7.5% RHA have the optimum compressive strength compared to the others. This compressive strength meets the planned concrete strength requirement of F’ç 20. The result of this study concluded that the use of Coconut Fiber Ash (CFA) and Rice Husk Ash (RHA) can be an alternative substitute for sustainable cement that can improve concrete quality, support recycling, and save production costs.

Copyright

© 2025 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - M. Sazili Harnawansyah
AU  - Ika Sulianti
AU  - Anna Elvaria
AU  - M. Ade Surya Pratama
AU  - Wardatul Jamilah
AU  - Muhammad Andy Akbar
AU  - Genta Mahardika
PY  - 2025
DA  - 2025/05/01
TI  - The Effect Of Coconut Fiber Ash And Rice Husk Ash As Cement Substitutes On The Compressive Strength Of Concrete F’c 20
BT  - Proceedings of the 8th FIRST 2024 International Conference on Global Innovations (FIRST-ESCSI 2024 )
PB  - Atlantis Press
SP  - 124
EP  - 133
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-678-9_13
DO  - 10.2991/978-94-6463-678-9_13
ID  - Harnawansyah2025
ER  -