Engineering properties of lightweight geopolymer synthesized from coal bottom ash and rice husk ash

2018 ◽  
Author(s):  
Nguyen Hoc Thang ◽  
Nguyen Ngoc Hoa ◽  
Pham Vo Thi Ha Quyen ◽  
Nguyen Ngoc Kim Tuyen ◽  
Tran Vu Thao Anh ◽  
...  
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Bottom Ash ◽  
Engineering Properties ◽  
Coal Bottom Ash

Development of Geopolymer Mortar from Metakaolin Blended with Agricultural and Industrial Wastes

2018 ◽  
Vol 766 ◽  
pp. 305-310 ◽  
Author(s):  
Chayanee Tippayasam ◽  
Sarochapat Sutikulsombat ◽  
Jamjuree Paramee ◽  
Cristina Leonelli ◽  
Duangrudee Chaysuwan
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Chemical Properties ◽  
Cement Industry ◽  
Industrial Wastes ◽  
Engineering Properties ◽  
Alkali Solutions ◽  
Physical And Chemical

Geopolymer is a greener alternative cement produced from the reaction of pozzolans and strong alkali solutions. Generally, the cement industry is one of largest producers of CO2that caused global warming. For geopolymer mortar usage, Portland cement is not utilized at all. In this research, geopolymer mortars were prepared by mixing metakaolin, various wastes (fly ash, bagasse ash and rice husk ash) varied as 80:20, 50:50 and 20:80, 15M NaOH, Na2SiO3and sand. The influence of various parameters such as metakaolin to ashes ratios and pozzolans to alkali ratios on engineering properties of metakaolin blended wastes geopolymer mortar were studied. Compressive strength tests were carried out on 25 x 25 x 25 mm3cube geopolymer mortar specimens at 7, 14, 21, 28 and 91 air curing days. Physical and chemical properties were also investigated at the same times. The test results revealed that the highest compressive strength was 20% metakaolin - 80% fly ash geopolymer mortar. When the curing times increases, the compressive strength of geopolymer mortar also increases. The mixing of metakaolin and bagasse ash/rice husk ash presented lower compressive strength but higher water absorption and porosity. For FTIR results, Si-O, Al-O and Si-O-Na+were found. Moreover, the geopolymer mortar could easily plastered on the wall.

scholarly journals Combined effects of rice husk ash and nylon fiber on engineering properties of cement mortar

2020 ◽  
Vol 2 (3) ◽  
Author(s):  
Lalani Fernando ◽  
Karunananda Pemasiri ◽  
Buddhika Dassanayake
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Cement Mortar ◽  
Engineering Properties ◽  
Combined Effects ◽  
Nylon Fiber
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