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Now showing items 81-90 of 161
Investigation of heat released during geopolymerization with fly ash based geopolymer
(IOP Publishing Ltd, 2019-08)
Geopolymerization consists of several chemical reactions that has been reported widely as an exothermic reaction. Previous studies on heat released during geopolymerization used metakaolin and fly ash of F class as a ...
Mechanical properties and thermal conductivity of lightweight foamed geopolymer concretes
(IOP Publishing Ltd, 2019-08)
Foamed geopolymer concretes have a better performance in the thermal insulation properties compared to normal geopolymer concretes. In this research, lightweight aggregate geopolymer concretes was incorporated with different ...
Porous metakaolin geopolymers with tailored thermal conductivity
(IOP Publishing Ltd, 2019-08)
In this work, a novel lightweight metakaolin geopolymers were produced by using hydrogen peroxide as foaming agent. The influence of the hydrogen peroxide incorporation content (0.25 – 1.25%) on density, compressive strength ...
Study on the geopolymer concrete properties reinforced with hooked steel fiber
(IOP Publishing Ltd, 2017-06)
In this research, Class F fly ash and a mixture of alkaline activators and different amount of hooked steel fiber were used for preparing geopolymer concrete. In order to analyses the effect of hooked steel fiber on the ...
Bond strength mechanism of fly ash based geopolymer mortars: a review
(IOP Publishing Ltd, 2017-11)
Geopolymer possess many excellent properties such as high compressive and bond strength, long term durability, better acid resistance and also known as a "Sustainable Material" due to its low carbon emission and low energy ...
Effect of sodium hydroxide molarity on physical, mechanical and thermal conductivity of metakaolin geopolymers
(IOP Publishing Ltd, 2018-03)
In the present work, the effect of different sodium hydroxide (NaOH) molarity (6M, 8M, 10M, 12M and 14M) on the physical, mechanical and thermal conductivity of metakaolin geopolymers (MkGPs) was investigated. Geopolymers ...
Mechanical properties of Graphene-rubber nanocomposites
(IOP Publishing Ltd, 2017-11)
This research focused on development of wearable sensor device by using Prevulcanized Natural Rubber (PV) and Epoxidized Natural Rubber (ENR 50) latex incorporated with graphene oxide (GO), graphene paste, graphene powder ...
Phase study of titanium dioxide nanoparticle prepared via sol-gel process
(IOP Publishing Ltd, 2018-03)
In this study, titanium dioxide nanoparticles have been prepared via sol-gel process using titanium tetraisopropoxide as a precursor with hydrochloric acid as a catalyst, and ethanol with deionized water as solvents. The ...
Durability of geopolymer lightweight concrete infilled LECA in seawater exposure
(IOP Publishing Ltd, 2017-11)
This paper describes a development of lightweight concrete using lightweight expanded clay aggregate (LECA) in fly ash (FA) based geopolymer immersed in seawater. The objective of this research is to compare the performance ...
Friction and braking application of unhazardous palm slag brake pad composite
(IOP Publishing Ltd, 2018-03)
This paper reveals new alternative friction materials for brake pads. Palm slag was studied as new friction materials in brake pads but its much harder made it difficult to be applied. As a way to reduce the hardness, tire ...