Text

PENGARUH VARIASI MOLARITAS NaOH TERHADAP SIFAT MEKANIK, POROSITAS, DAN PERMEABILITAS PADA BETON POROUS GEOPOLIMER

---

Penilaian

---

This study aims to analyze the effect of NaOH molarity variation (13 M, 14 M, 15 M, 16 M, 17 M) on the mechanical properties, porosity, and permeability of fly ash-based geopolymer porous concrete. The experimental method involved casting cylindrical samples (Ø10 cm × 20 cm) using coarse aggregates (9.5–12.5 mm), an alkali activator/fly ash ratio of 0.45, and oven curing at 80°C for 24 hours. Results indicated that 15 M NaOH yielded optimal compressive strength of 9.10 MPa (28 days) and split tensile strength of 3.60 MPa (28 days), with a porosity of 28.0340% and permeability of 1.4147 cm/s. Increased NaOH molarity enhanced geopolymer matrix density due to improved reactivity of silica (SiO₂) and alumina (Al₂O₃) in fly ash. However, molarities >15 M reduced compressive strength due to alkali segregation. Permeability values met ACI 522R-10 standards (0.14–1.22 cm/s), while porosity remained within the acceptable range (15–35%). This study recommends 15 M NaOH for sustainable geopolymer porous concrete applications in infrastructure.

---

Availability

Inventory Code	Barcode	Call Number	Location	Status
2507001912	T169972	T1699722025	Central Library (Reference)	Available but not for loan - Not for Loan

Detail Information

Series Title

-

Call Number

T1699722025

Publisher

: Prodi Teknik Sipil, Fakultas Teknik Universitas Sriwijaya., 2025

Collation

xv, 54 hlm.; ill.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

-

Classification

624.07

Content Type

-

Media Type

-

Carrier Type

-

Edition

-

Subject(s)

Teknik Sipil

Specific Detail Info

-

Statement of Responsibility

EM

Other version/related

File Attachment

Comments

---

You must be logged in to post a comment