A study on hardness behavior of geopolymer paste in different condition

Zainal, Farah Farhana; Kamarudin, Hussin; Rahmat, Azmi; Shamsudin, Shaiful Rizam

doi:10.1063/1.4958762

Cited by 6 publications

(1 citation statement)

References 2 publications

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“…Geopolymer has been used to reduce the emission of carbon dioxide (CO2) to the air caused from the production of Ordinary Portland Cement (OPC) hence could also reduced the global warming pollution [2][3]. Geopolymer also has many advantages for instance lower water absorption, lower porosity and high compressive strength [4][5]. Kaolin was chosen in this research study because it is also alumino silicate inorganic polymer like fly ash and slag which has good durability properties and could reduced CO2 emission to the environment.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Curing Temperature on the Properties of Kaolin Geopolymer Paste

Zainal

Hussin

Nordin

et al. 2022

J. Phys.: Conf. Ser.

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This research paper focuses on the effect of curing temperature on the properties of kaolin geopolymer paste. Alternatively, kaolin was used as binders in making concrete paste in order to reduce the emissions of carbon dioxide (CO2) to the environment. Kaolin geopolymer paste was made by mixture of kaolin and alkaline activators with 0.8 :1 of solid to liquid ratio. The alkaline activator solutions were prepared with 0.2:1 ratio of Na2SiO3/NaOH. The mixture were placed in cube moulds (50 mm × 50 mm × 50 mm) and left for 24 hours until it hardened. Then, the samples were cured at 60, 70 and 80°C for 24 hours in the oven. The samples were then tested based on compressive strength, porosity, water absorption and morphology after days 28. Kaolin geopolymer paste with 70°C curing temperature is proved to have the highest compressive strength (1.04 N/mm2), lowest percentage of water absorption (1.71%) and lowest percentage of porosity (0.15%) compared to 60°C and 80°C curing temperature. The microstructure of 70°C curing temperature also shows that the geopolimerization was fully occurred with no pore.

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Section: Introductionmentioning

confidence: 99%