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Advances in Concrete Construction
  Volume 5, Number 1, February 2017 , pages 017-29

Improving compressive strength of low calcium fly ash geopolymer concrete with alccofine
Bharat Bhushan Jindal, Dhirendra Singhal, Sanjay K. Sharma, Deepankar K. Ashish and Parveen

    Geopolymer concrete is environmentally friendly and could be considered as a construction material to promote the sustainable development. In this paper fly ash based geopolymer concretes with different percentages of alccofine were made by mixing sodium hydroxide and sodium silicate as an alkaline activator and cured at ambient as well as heat environment in an electric oven at 90oC. Effects of various parameters such as the percentage of alccofine, curing temperature, a period of curing, fly ash content, was studied on compressive strength as well as workability of geopolymer concrete. The study concludes that the presence of alccofine improves the properties of geopolymer concrete during a fresh and hardened state of concrete. Geopolymer concrete in the presence of alccofine can be used for the general purpose of concrete as required compressive strength can be achieved even at ambient temperature. The 28 days compressive strength of 73 MPa, when cured at 90-degree Celsius, confirmed that it is also very suitable for precast concrete components.
Key Words
    geopolymer concrete; alccofines; heat cured; ambient cured; x-ray diffraction
Bharat Bhushan Jindal:
1) Research Scholar, IK Gujral Punjab Technical University, Kapurthala, Punjab, India
2) Department of Civil Engineering, M.M. University Sadopur, Ambala, India
Dhirendra Singhal and Parveen: Department of Civil Engineering, DCRUST Murthal, Haryana, India
Sanjay K. Sharma: Department of Civil Engineering, NITTTR, Chandigarh, India
Deepankar K. Ashish: Maharaja Agrasen Institute of Technology, Maharaja Agrasen University, Baddi, India

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