Saloma, Saloma and Hanafiah, Hanafiah and Saggaff, Anis and Mawarni, Annisa (2016) Geopolymer Mortar with Fly Ash. MATEC Web of Conferences, 78 (1). pp. 1-6. ISSN MATEC Web Conf., 78 (2016) 01026
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Abstract
The cement industry accounts for about 7% of all CO2 emissions caused by humans. Therefore, it is necessary to find another material in order to support sustainable material. An alternative way is replacing cement material with alternative material as fly ash. Fly ash as binder need to be added alkaline activator in the form of sodium silicate (Na2SiO3) or potassium silicate (K2SiO3) and sodium hydroxide (NaOH) or potassium hydroxide (KOH). The purpose of this research is to analyze the effect of activator liquid concentration on geopolymer mortar properties and to know the value of compressive strength. Molarity variation of NaOH are 8, 12, 14, and 16 M with ratio of Na2SiO3/NaOH = 1.0. Ratio of sand/fly ash = 2.75 and ratio of activator/fly ash = 0.8. The cube-shaped specimen 50 × 50 × 50 mm is cured by steam curing with a temperature of 60°C for 48 hours. The experimental result of fresh mortar reported that the molarity of NaOH affect the slump flow and setting time, higher of NaOH produces the smaller value of slump and the faster time of setting. The experimental of density results reported that the increase of specific gravity when the molarity of NaOH increased. The experimental results of the compressive strength are showed that the maximum compressive strength of geopolymer mortar 14 M is 10.06 MPa and the lowest compressive strength produced by geopolymer mortar 8 M is 3.95 MPa. Testing the compressive strength of geopolymer mortar 16 M produces compressive strength lower than 14 M geopolymer mortar is 9.16 MPa.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Geopolymer |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA1-2040 Engineering (General). Civil engineering (General) > TA169.H37 Reliability (Engineering), Engineering design, Civil engineering |
| Divisions: | 03-Faculty of Engineering > 22201-Civil Engineering (S1) |
| Depositing User: | Hanafiah Hanafiah |
| Date Deposited: | 03 Jun 2020 11:01 |
| Last Modified: | 03 Jun 2020 11:01 |
| URI: | http://repository.unsri.ac.id/id/eprint/29486 |
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