The Effect of Pulp Industrial Waste as Chemical Admixture to Compressive Strength of Fly Ash Based Alkali Activated Materials

Harmaji, Andrie; Imran, Aishah Mahyarni; Sunendar, Bambang

doi:10.1051/matecconf/20179701003

Cited by 2 publications

(2 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Addition of plasticizer to each modified sample restore its slump value near to normal concrete, that is 13 cm and 10 cm or 2-3 times, respectively. The increase of slump value can be explained by analysing properties of rice husk-based superplasticizer that cover the cement particles to make a repelling effect and distribute the compound uniformly [25]. This explains why workability is higher when using rice husk-based plasticizer.…”

Section: Slump Testmentioning

confidence: 99%

Mechanical Properties Improvement of Disposable Diapers Concrete by Utilization Rice Husk-Based Admixture

Zuraida

Dewancker

Irfan

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

Self Cite

View full text Add to dashboard Cite

Disposable diaper recycling has become a major focus in several countries due to environmental concerns. As for overcoming the problem of recycling technology, the use of diaper waste as a material for concrete can be an easier and cheaper option. Although the use of waste disposable diapers as concrete composite material is still very limited, several studies have shown positive results. The addition of disposable diapers to concrete has increased internal curing hydration, improve strength and durability. However, the problem of strength remains a major issue to the development of this concrete. Previous studies concluded that the addition of diapers to concrete is only a maximum of 5%. To further enhance its workability, the addition of a rice husk-based superplasticizer as a concrete admixture was studied in this paper. The variants of the mix design are the addition of disposable diapers of 5% and 10%, with and without superplasticizer. The results show that the addition has no significant impact to reduce compressive strength compared to normal concrete but enhances its workability and mechanical properties. The result increases compressive strength to 4.4% - 6.9% and increases slump value to 2 - 3 times. The result also indicated the variants utilization of disposable diaper concrete for the infrastructure industry.

show abstract

Section: Slump Testmentioning

confidence: 99%

Mechanical Properties Improvement of Disposable Diapers Concrete by Utilization Rice Husk-Based Admixture

Zuraida

Dewancker

Irfan

et al. 2022

IOP Conf. Ser.: Earth Environ. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…PLTU Suralaya di Jawa Barat adalah salah satu pembangkit listrik yang menggunakan batubara yang menghasilkan fly ash dalam jumlah besar, yakni sekitar 219.000 ton per tahun. Pemerintah Indonesia mengkategorikan fly ash sebagai bahan berbahaya dan beracun (B3) meskipun memiliki kandungan silika dan alumina yang tinggi yang dapat digunakan sebagai prekursor geopolimer, suatu material aluminosilikat yang diaktifkan oleh larutan alkali (Harmaji, 2017). Larutan alkali diperlukan untuk melarutkan alumina dan silika dalam fly ash dan juga memastikan terjadinya reaksi kimia.…”

Section: Pendahuluanunclassified

Pengaruh Waktu Curing Terhadap Kuat Tekan Geopolimer Berbasis Fly Ash

Harmaji

Finger

Asri

et al. 2019

ENSAINS

Self Cite

View full text Add to dashboard Cite

Abstract:. Suralaya power plant produces fly ash about 219.000 ton per year. Fly ash contents of silica and alumina as major components that can be used as precursors for geopolymer, a three dimensional networks aluminosilicate polymers. This research aim is to utilize fly ash for geopolymer made by mixing fly ash, fine aggregate, and alkali activator in a cubic mould and curing was carried out at room temperature for 7 and 28 days. After 28 days of curing the compressive strength of geopolymer reached 41.70 MPa. XRD characterization shows Albite (NaAlSi3O8) formation which has similarity to geopolymer compound. Fourier Transform Infra Red spectra show siloxo and sialate bond. These are typical functional groups that are found in geopolymer materials.Keyword: geopolymer, fly ash, aluminosilicate, alkali activator, albite, siloxo, sialateAbstrak: Pembangkit Listrik Tenaga Uap (PLTU) Suralaya menghasilkan fly ash (abu terbang) sekitar 219.000 ton per tahun. Fly ash memiliki silika dan alumina sebagai komponen utama yang dapat digunakan sebagai prekursor untuk geopolimer, suatu material polimer aluminosilikat tiga dimensi. Penelitian ini bertujuan untuk memanfaatkan fly ash untuk geopolimer yang dibuat dengan mencampur fly ash, agregat halus, dan aktivator alkali dalam cetakan kubik dan pengawetan dilakukan pada suhu kamar selama 7 dan 28 hari. Setelah 28 hari curing kekuatan tekan geopolimer mencapai 41,70 MPa. Karakterisasi XRD menunjukkan pembentukan Albite (NaAlSi3O8) yang memiliki kemiripan dengan senyawa geopolimer. Hasil spektroskopi Fourier Transform Infra Red (FTIR) menunjukkan ikatan siloxo dan sialate yang merupakan gugus fungsional khas yang ditemukan dalam geopolimer.Kata Kunci: geopolimer, abu terbang, aluminosilikat, alkali aktivator, albite, siloxo, sialate

show abstract

The Effect of Pulp Industrial Waste as Chemical Admixture to Compressive Strength of Fly Ash Based Alkali Activated Materials

Cited by 2 publications

References 5 publications

Mechanical Properties Improvement of Disposable Diapers Concrete by Utilization Rice Husk-Based Admixture

Mechanical Properties Improvement of Disposable Diapers Concrete by Utilization Rice Husk-Based Admixture

Pengaruh Waktu Curing Terhadap Kuat Tekan Geopolimer Berbasis Fly Ash

Contact Info

Product

Resources

About