Relationship between flexural and compressive strength of fly ash based geopolymer concrete with ambient curing
By: Shinde, Bhushan H
.
Contributor(s): Nawale, Bhagyashri S.
Publisher: Mumbai ACC LTD 2023Edition: Vol.97(3), Mar.Description: 26-34p.Subject(s): Civil EngineeringOnline resources: Click here
In:
Indian Concrete Journal - ICJSummary: Fly ash based geopolymer concrete (GPC) requires the temperature curing thus it is limited to precast constructions only. The production of ambient cured fly ash based GPC with treated sea sand will protect the environment from air pollution and depletion of river beds. In this research work, based on the compressive strength, the appropriate percentage of river sand and treated sea sand (i.e. 45 % + 55 %) is evaluated. For gaining the strength of geopolymer concrete in ambient curing (GPCA) as similar to geopolymer concrete with temperature curing (GPCT), ordinary Portland cement (OPC) is added in the dry mix of GPCA and it is found that the 4 % ordinary Portland cement (OPC) is the optimum percentage to obtain the similar strength as geopolymer concrete with temperature curing. In this regards the researchers have investigated the compressive strength, Flexural strength and its power relations. The relations for GPCT, GPCA and conventional concrete (CC) are evaluated by carrying out regression analysis, empirical formula in the form of y = axb and also it compared with the relationship proposed by India, America, Canada, Australia, New Zealand and Europe[6-8] codes of practice for evaluating the flexural tensile strength using compressive strength. It is found that the value of coefficient (a) in empirical equation for GPCT and GPCA are 0.636, 0.574 and the value of power (b) are 0.567, and 0.587 respectively. GPCA and GPCT satisfy the relations proposed by codes of practice of India, America, Canada, Australia, New Zealand and Europe[6-8]. From the overall results it is found that, the fly ash based geopolymer concrete with treated sea sand and 4 % OPC can be best an alternative green concrete to conventional concrete for cast-in-situ construction.
| Item type | Current location | Call number | Status | Date due | Barcode | Item holds |
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Articles Abstract Database
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School of Engineering & Technology Archieval Section | Not for loan | 2023-0979 |
Fly ash based geopolymer concrete (GPC) requires the temperature curing thus it is limited to precast constructions only. The production of ambient cured fly ash based GPC with treated sea sand will protect the environment from air pollution and depletion of river beds. In this research work, based on the compressive strength, the appropriate percentage of river sand and treated sea sand (i.e. 45 % + 55 %) is evaluated. For gaining the strength of geopolymer concrete in ambient curing (GPCA) as similar to geopolymer concrete with temperature curing (GPCT), ordinary Portland cement (OPC) is added in the dry mix of GPCA and it is found that the 4 % ordinary Portland cement (OPC) is the optimum percentage to obtain the similar strength as geopolymer concrete with temperature curing. In this regards the researchers have investigated the compressive strength, Flexural strength and its power relations. The relations for GPCT, GPCA and conventional concrete (CC) are evaluated by carrying out regression analysis, empirical formula in the form of y = axb and also it compared with the relationship proposed by India, America, Canada, Australia, New Zealand and Europe[6-8] codes of practice for evaluating the flexural tensile strength using compressive strength. It is found that the value of coefficient (a) in empirical equation for GPCT and GPCA are 0.636, 0.574 and the value of power (b) are 0.567, and 0.587 respectively. GPCA and GPCT satisfy the relations proposed by codes of practice of India, America, Canada, Australia, New Zealand and Europe[6-8]. From the overall results it is found that, the fly ash based geopolymer concrete with treated sea sand and 4 % OPC can be best an alternative green concrete to conventional concrete for cast-in-situ construction.
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