Open Access Open Access  Restricted Access Subscription Access

Experimental Study of Mechanical Properties Geopolymer Concrete.

Tushar J. Jadhav, Ram N. Chatorikar

Abstract


This experimental study aimed to define the parameters for optimum mix design of geopolymer concrete made by partial replacement of cement. The geopolymer concrete is nothing but the formation of fly ash and alkali activators. Fly ash is the waste product from the thermal power station and may use as the pozzolanic material. But, only fly ash is may not the only replacement for the cement, for the more binding of concrete, it is essential to use alkali activators for harden the concrete. The alkali activators are formed by the mixing of sodium hydroxide [NaOH] and sodium silicates[ ] .by mixing these chemicals these may use as the binder material. But by using these chemicals the curing method for the Geopolymer Concrete (GPC) has changed, after using these chemicals and fly ash the concrete specimens are heated up to the 60°-80°C for the air curing for the 24 hours. After that the specimens are kept in the ambient temperature. the concrete is tested for the 7 days and 28 days curing. For the experimental investigation various mixes of M25 grade concrete were casted. The replacement of geopolymer concrete is for 40%,60%,80%,100%.For compressive strength and split tensile strength of the concrete the Cubes of size 150 mm x 150 mm x 150 mm for compressive strength and cylinders of size 300 mm height and 150 mm respectively. Six specimens were casted for each concrete mix for compressive test and split tensile strength. these tests are conducted for the 7 days and 28 days curing. The result indicate that the geopolymer concrete is can be used as the structural grade concrete.

Full Text:

PDF

References


Joseph Davidovits and Michel Davidovics. Geopolymer Ultra-High Temperature Tooling Material For The Manufacture Of Advanced Composites, GPC Tool Mater., 1991; 36(2): 1939-1949p.

Benny Joseph, George Mathew. Influence of aggregate content on the behavior of fly ash based geopolymer concrete, Scientia Iranica, (2012);19 (5): 1188–1194 p.

Pattanapong Topark-Ngarm, Prinya Chindaprasirt and Vanchai Sata. “Setting time, Strength, and Bond of High-Calcium Fly Ash Geopolymer Concrete”, J. Mater. Civ. Eng., 2015, 27(7), Article ID 04014198.

Farhad Aslani, “Thermal Performance Modeling of Geopolymer Concrete”, J. Mater. Civ. Eng., 2016; 28(1): Article ID 04015062.

Weibo Ren, Jinyu Xu and Erlei Bai. Strength and Ultrasonic Characteristics of Alkali-Activated Fly Ash-Slag Geopolymer Concrete after Exposure to Elevated Temperature, J. Mater. Civ. Eng., 2016; 28(1): Article ID 04015124.

Vinh Duy Cao, Shima Pilehvar. Thermal performance and numerical simulation of geopolymer concrete containing different types of thermoregulating materials for passive building applications. Eng bldg. 173 (2018): 678–688p.

Faiz Uddin Ahmed Shaikh. Mechanical and Therma properties of fly ash geopolymer concrete containing recycled coarse aggregate, Int. J. Sust. Blt. Env. (2016) 5: 277–287p.

Pouhet Rahaelle, Cyr Martin. Formulation and performance of flash metakaolin geopolymer concretes”. cnstr. & bldg. Mater. 120 (2016):150–160p.

Shima Pilehvara, Vinh Duy Caoa, et al. Mechanical properties and microscale changes of geopolymer concrete and Portland cement concrete containing micro encapsulated phase change materials, Cem Conc Res.100 (2017): 341–349p.

Vinh Duy Cao, Vinh Duy Caoa, et al. Influence of microcapsule size and shell polarity on thermal and mechanical properties of thermoregulating geopolymer concrete for passive building applications. Eng Conv Man. 164 (2018): 198–209p.,

Shima Pilehvar, Vinh Duy Cao, et al. Physical and mechanical properties of fly ash and slag geopolymer concrete containing different types of micro-encapsulated phase change materials. const bldg Mater. 173 (2018): 28–39p.

Sreenivasulu Chitrala, Guru Jawahar Jadaprolub, , et al. Study and predicting the stress-strain characteristics of geopolymer concrete under compression”. Case St. in Const Mater. 8 (2018):172–192p.

Nabeel A. Farhan, M. Neaz Sheikh, et al. Investigation of engineering properties of normal and high strength fly ash based geopolymer and alkali-activated slag concrete compared to ordinary Portland cement concrete”. const bldg Mater 196 (2019): 26–42p.

Subhashini Gatti, Dr. D S V Prasad. comparative study on compressive strength of geo polymer concrete using partial replacement of cement with GGBS, Int. J. Rec Trds Eng., 03(8); (2017)

IS: 12269-1987, “Specification for 53 grade Ordinary Portland Cement”, Bureau of Indian Standards, New Delhi.

IS:383-1970, “Specification for Coarse and Fine Aggregates from Natural Sources for Concrete (Second Revision)”, Bureau of Indian Standards, New Delhi.

IS: 10086-1982, “Specification for moulds for use in tests of cement and concrete third reprint March 2008, Bureau of Indian Standards, New Delhi.

IS: 456-2000, “Plain and Reinforced Concrete- Code of Practice”, Bureau of Indian Standards, New Delhi, pp.01-100.

IS: 5816:1999, “Splitting tensile strength of concrete method of test”, Bureau of Indian Standards, New Delhi.

IS: 516:1959, “Methods of tests for strength of concrete”, Bureau of Indian Standards, New Delhi.


Refbacks

  • There are currently no refbacks.