DURABILITAS LIGHTWEIGHT GEOPOLYMER CONCRETE TERHADAP LARUTAN H2SO4 5% DENGAN KONSENTRASI NAOH 14 M

RAFLY, MUHAMMAD and Saloma, Saloma and Hanafiah, Hanafiah (2019) DURABILITAS LIGHTWEIGHT GEOPOLYMER CONCRETE TERHADAP LARUTAN H2SO4 5% DENGAN KONSENTRASI NAOH 14 M. Undergraduate thesis, Sriwijaya University.

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Abstract

Lightweight geopolymer concrete claimed as an eco-friendly material compared to the concrete with OPC usage. Huge CO2 emissions on the making process of OPC cement was the ultimate reason. Lightweight geopolymer concrete is a modification of geopolymer concrete with low density. Mixture of lightweight geopolymer is composed of fly ash, fine aggregate, Na2SiO3 and NaOH solution as activator, superplasticizer, and foam. Ratio used are 1:2 for precursor and fine aggregate, 2.5:1 for 14 M NaOH concentration and Na2SiO3 solution, 1:2 for activator and precursor, 1:40 for foam agent and water with percentage of foam is 50% of the volume. For plasticizer, it used 3% to weight of precursor. Specimens were carried out to oven under temperature of 60o C for 24 hours. Optimum condition of specimen peaked on the age of 28 days after wrapped in thin plastic for curing purpose, with compressive strength of 27.96 MPa and density of 1,701.84 kg/m3. Several previous researches have studied the acid resistance of geopolymer concrete. In this experiment, 5% H2SO4 solution is used as immersion media. For durability test, specimens are conditioned under ambient temperature, continuous immersion, and wet-dry cycle. The influence for each condition towards visual appearance, chemical composition, density and compressive strength change was investigated on test day of 28 and 56. The results showed that, test duration and aggressive environment condition affect the loss of density and compressive strength on lightweight geopolymer concrete.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	acid resistance, durability, geopolymer, and lightweight geopolymer concrete
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA1-2040 Engineering (General). Civil engineering (General) > TA163 Sustainable engineering Cf. TD1+ Environmental technology
Divisions:	03-Faculty of Engineering > 22201-Civil Engineering (S1)
Depositing User:	Users 477 not found.
Date Deposited:	01 Aug 2019 12:04
Last Modified:	01 Aug 2019 12:04
URI:	http://repository.unsri.ac.id/id/eprint/1317

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