000			03615nam a22002897a 4500
003			KOHA
005			20240814161325.0
008			230309d2022 cy ||||| m||| 00| 0 eng d
040			_aCY-NiCIU _beng _cCY-NiCIU _erda
041			_aeng
090			_aYL 2743 _bU63 2022
100	1		_aUnabor, Joseph Godstime
245	1	0	_aGEOPOLYMERIZATION TECHNIQUE FOR BRICK PRODUCTION FROM COAL ASH AND WASTE PLASTICS / _cJOSEPH FOSDTIME UNABOR; SUPERVISOR: ASSOC. PROF. DR. IME AKANYETI
264			_c2022
300			_a58 sheets; _c31 cm. _eIncludes CD
336			_2rdacontent _atext _btxt
337			_2rdamedia _aunmediated _bn
338			_2rdacarrier _avolume _bnc
502			_aThesis (MSc) - Cyprus International University. Institute of Graduate Studies and Research Environmental Sciences Department
504			_aIncludes bibliography (sheets 52- 58)
520			_aABSTRACT Geopolymerization has become a modern method of transforming materials into suitable products for different purposes. Generation and disposal of waste materials into environment has become a prevailing situation resulting in vast environmental pollution. The overall purpose of this study is to produce environmentally friendly construction materials from waste through geopolymerization technique. In this work, bricks were produced using coal ash (CA) and waste plastics (WP) in coarse and fine particle form. For optimization experiments, several parameters and mixing ratios for coal ash to activation ratios of 3:1, 3.5:1, and 4:1 were investigated. Activation liquid (NaOH: Na2SiO3) ratio of 1:2 was used for all the experimental tests. The plastics were added using two different measurement methods: mass/mass and volume/volume. The fine plastic particles were added to the coal ash directly in the mechanical mixer at different percentages (0, 5, 10, 12.2 and 15%). The manufactured bricks were analysed for density and compressive strength after a curing period of 7, 14 and 28 days. Water absorption test was also conducted on the manufactured bricks after 28 days of curing. Microstructural analysis was carried out on the manufactured bricks specimens. According to findings obtained on the 28th day after curing at room temperature indicates that bricks specimens produced with coal ash to activation ratio of 3.5:1 and 15% fine plastic had a density value of 1.53g/cm3 and a compressive strength value of 12.53 MPA. Bricks specimen produced with coal ash to activator ratio of 4:1 and 5% fine plastic produced compressive strength of 13.8 MPA with a density value of 1.65g/cm3 . The test result for both 3.5:1 and 4:1 brick sample show density and compressive strength values that complies with ASTM C62 and TS EN 771-1 acceptable standards and can be used for construction purpose. For both 3.5:1 and 4:1 brick specimen made with fine plastic, lower water absorption (%) values were obtained. Microstructural analysis: XRF, XRD, FTIR and SEM were also carried out and the results were discussed in detail. In general, use of fine plastic improves the characteristics of the brick and therefore should be considered as an alternative in the production of geopolymer bricks with a view of achieving a lighter weight construction material. Keywords: Coal ash, Eco-friendly bricks, Geo-polymerization, Waste plastic, Waste materials
650		0	_aCoal ash _vDissertations, Academic
650		0	_aBricks _vDissertations, Academic
650		0	_aWaste products _vDissertations, Academic
942			_2ddc _cTS
999			_c289854 _d289854