Fly Ash-Based Geopolymer Concrete

Hardjito, Djwantoro; Wallah, Steenie E.; Sumajouw, D. M. J.; Rangan, B. Vijaya

doi:10.1080/13287982.2005.11464946

Cited by 794 publications

(628 citation statements)

References 8 publications

Supporting

Mentioning

358

Contrasting

Unclassified

Order By: Relevance

“…The price needed for obtaining 1 t of geopolymer powder is 77.07 $, in our country the price of Portland cement is 104.65 $/t. In this condition the price of fly ash-geopolymer is with 26.3% cheaper than Portland cement, in accordance with literature estimated to10 to 30 percent [35,36].…”

Section: E3s Web Of Conferencessupporting

confidence: 73%

Power plant wastes capitalization as geopolymeric building materials

2017

View full text Add to dashboard Cite

Abstract. In this innovative study, we are present an investigation over the properties of geopolymeric materials prepared using ash supplied by power plant Iasi, Romania and sodium hydroxide solutions/pellets. Having as objective a minimum consumption of energy and materials was developed a class of advanced eco-materials. New synthesized materials can be used as a binder for cement replacement or for the removal/immobilization of pollutants from waste waters or soils. It offers an advanced and low cost-effective solution too many problems, where waste must be capitalized. The geopolymer formation, by hydrothermal method, is influenced by: temperature (20-600°C), alkali concentration (2M-6M), solid /liquid ratio (1-2), ash composition, time of heating (2-48 h), etc. The behaviour of the FTIR peak of 6M sample indicated upper quantity of geopolymer formation at the first stage of the reaction. XRD spectra indicated phases like sodalite, faujasite, Na-Y, which are known phases of geopolymer/zeolite. Advanced destroyed of ash particles due to geopolymerisation reaction were observed when the temperature was higher. At the constant temperature the percentage of geopolymer increases with increasing of curing time, from 4-48 h. Geopolymer materials are environmentally friendly, for its obtaining energy consumption, and CO2 emission is reduced compared to cement binder.

show abstract

Section: E3s Web Of Conferencessupporting

confidence: 73%

Power plant wastes capitalization as geopolymeric building materials

2017

View full text Add to dashboard Cite

show abstract

“…A number of studies have shown that geopolymer concrete has properties making it suitable as a construction material [2][3][4][5]. On the other hand, aside from being innately corrosion resistant, FRP bars are lightweight, electromechanically neutral, and fatigue-and chemical-resistant, as well as having high tensile-strength properties [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of the flexural strength and serviceability of geopolymer concrete beams reinforced with glass-fibre-reinforced polymer (GFRP) bars

Maranan

Manalo

Benmokrane

et al. 2015

Engineering Structures

141

View full text Add to dashboard Cite

Geopolymer concrete reinforced with glass-fibre-reinforced polymer (GFRP) bars can provide a construction system with high durability, high sustainability, and adequate strength. Few studies deal with the combined use of these materials, and this has been the key motivation of this undertaking. In this study, the flexural strength and serviceability performance of the geopolymer concrete beams reinforced with GFRP bars were evaluated under a four-point static bending test. The parameters investigated were nominal bar diameter, reinforcement ratio, and anchorage system. Based on the experimental results, the bar diameter had no significant effect on the flexural performance of the beams. Generally, the serviceability performance of a beam is enhanced when the reinforcement ratio increases. The mechanical interlock and friction forces provided by the sand coating was adequate to secure an effective bond between the GFRP bars and the geopolymer concrete. Generally, the ACI 4401.R-06 and CSA S806-12 prediction equations underestimate the beam strength. The bending-moment capacity of the tested beams was higher than that of FRP-reinforced concrete beams from the previous studies.2

show abstract

“…Professor B. Vijaya Rangan (2008), Curtin University, Australia, stated that, "the polymerization process involves a substantially fast chemical reaction under alkaline conditions on silicon-aluminum minerals that results in a three-dimensional polymeric chain and ring structure…." 4 The ultimate structure of the geopolymer depends largely on the ratio of Si to Al (Si:Al), with the materials most often considered for use in transportation infrastructure typically having an Si:Al between 2 and 3.5 5 &6 . The reaction of Fly Ash with an aqueous solution containing Sodium Hydroxide and Sodium Silicate in their mass ratio, results in a material with three dimensional polymeric chain and ring structure consisting of Si-O-Al-O bonds 7 .…”

Section: Introductionmentioning

confidence: 99%