The Role of Inorganic Polymer Technology in the Development of ‘Green Concrete’

Carbon dioxide equivalent (CO2-e) emissions: A comparison between geopolymer and OPC cement concrete

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A comprehensive review on the applications of coal fly ash

Geopolymer concrete: A review of some recent developments

A review of the multi-component utilisation of coal fly ash

To reduce greenhouse gas emissions, efforts are needed to develop environmentally friendly construction materials. This paper presents the development of fly ash-based geopolymer concrete. In geopolymer concrete, a by-product material rich in silicon and aluminum, such as low-calcium (ASTM C 618 Class F) fly ash, is chemically activated by a high-alkaline solution to form a paste that binds the loose coarse and fine aggregates, and other unreacted materials in the mixture. The test results presented in this paper show the effects of various parameters on the properties of geopolymer concrete. The application of geopolymer concrete and future research needs are also identified.

On the development of fly ash-based geopolymer concrete

From 2001, we have conducted some important research on the development, manufacture, behaviour, and applications of Low-Calcium Fly Ash-Based Geopolymer Concrete. This concrete uses no Portland cement; instead, we use the low-calcium fly ash from a local coal burning power station as a source material to make the binder necessary to manufacture concrete.

/pdf/low-calcium-fly-ash-based-geopolymer-concrete-long-term-s8f9tcw5go.pdf

Low-Calcium fly ash-based geopolymer concrete: Long-term properties

Low-Calcium, Fly-Ash-Based Geopolymer Concrete

Geopolymer is a new development in the world of concrete in which cement is totally replaced by pozzolanic materials like fly ash and activated by highly alkaline solutions to act as a binder in the concrete mix. For the selection of suitable ingredients of geopolymer concrete to achieve desire strength at required workability, an experimental investigation has been carried out for the gradation of geopolymer concrete and a mix design procedure is proposed on the basis of quantity and fineness of fly ash, quantity of water, grading of fine aggregate, fine to total aggregate ratio. Sodium silicate solution with Na2O = 16.37 %, SiO2 = 34.35 % and H2O = 49.28 % and sodium hydroxide solution having 13 M concentration were maintained constant throughout the experiment. Water-to-geopolymer binder ratio of 0.35, alkaline solution-to-fly ash ratio of 0.35 and sodium silicate-to-sodium hydroxide ratio of 1.0 by mass were fixed on the basis of workability and cube compressive strength. Workability of geopolymer concrete was measured by flow table apparatus and cubes of 150 mm side were cast and tested for compressive strength after specified period of oven heating. The temperature of oven heating was maintained at 60 °C for 24 h duration and tested 7 days after heating. It is observed that the results of workability and compressive strength are well match with the required degree of workability and compressive strength. So, proposed method is used to design normal and standard geopolymer concrete.

Mix Design of Fly Ash Based Geopolymer Concrete

From 2001, we have conducted some important research on the development, manufacture, behaviour, and applications of Low-Calcium Fly Ash-Based Geopolymer Concrete. This concrete uses no Portland cement; instead,we use the low-calcium fly ash from a local coal

B. Vijaya Rangan

Papers

On the development of fly ash-based geopolymer concrete

Low-Calcium fly ash-based geopolymer concrete: Long-term properties

Low-Calcium, Fly-Ash-Based Geopolymer Concrete

Mix Design of Fly Ash Based Geopolymer Concrete

Low-Calcium fly ash-based geopolymer concrete: Reinforced beams and columns