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Experimental evaluation of compressive, tensile strength and impact test in blast furnace slag based geopolymer concrete, under high temperature
Today, the use of nanoscale additives in the concrete industry with the aim of reducing the negative effects ofPortland cement and improving the mechanical properties of concrete has received much attention. Also, in orderto reduce the harmful environmental effects and increase the mechanical properties and durability of concrete,particles with high pozzolanic properties are used as a suitable alternative to ordinary cement in concrete. In thisregard, geopolymer concrete using materials containing aluminosilicate materials with adhesive properties andfiller, as an alternative to cement, has attracted the attention of researchers. Concrete resistance to high heat is ofparticular importance. Geopolymer concrete has a good performance against heat due to its strong structure. Inthe current study, slag-based geopolymer concrete was used with 0-2% polyolefin fibers and 0-8% nano-silica toimprove its structure. After curing the specimens under dry conditions at a temperature of 60°C in an oven, theywere subjected to Compressive strength, Tensile strength, and Drop weight hammer tests to evaluate theirmechanical properties. all tests were performed at 90 days of age under ambient temperature (20 ℃) and hightemperature (500 ℃). The addition of nano-silica enhanced the whole properties of the slag-based geopolymerconcrete. Addition of up to 8% nanosilica to the geopolymer concrete composition at 20% temperature improvedthe compressive strength test results up to 21.94%, tensile strength up to 15.19% and impact energy up to36.36%. Addition of up to 2% of polyolefin fibers to the geopolymer concrete composition improved the tensilestrength up to 11.76%, the impact energy up to 8.26 times and the compressive strength drop up to 22.49%.Applying high heat to geopolymer concrete samples reduced the compressive strength up to 16%, tensile strengthup to 21% and impact energy up to 72.72%. The effect of heat on the drop in results in control concrete is morethan geopolymer concrete. In the following, by conducting the SEM test, a ...
Experimental evaluation of compressive, tensile strength and impact test in blast furnace slag based geopolymer concrete, under high temperature
Today, the use of nanoscale additives in the concrete industry with the aim of reducing the negative effects ofPortland cement and improving the mechanical properties of concrete has received much attention. Also, in orderto reduce the harmful environmental effects and increase the mechanical properties and durability of concrete,particles with high pozzolanic properties are used as a suitable alternative to ordinary cement in concrete. In thisregard, geopolymer concrete using materials containing aluminosilicate materials with adhesive properties andfiller, as an alternative to cement, has attracted the attention of researchers. Concrete resistance to high heat is ofparticular importance. Geopolymer concrete has a good performance against heat due to its strong structure. Inthe current study, slag-based geopolymer concrete was used with 0-2% polyolefin fibers and 0-8% nano-silica toimprove its structure. After curing the specimens under dry conditions at a temperature of 60°C in an oven, theywere subjected to Compressive strength, Tensile strength, and Drop weight hammer tests to evaluate theirmechanical properties. all tests were performed at 90 days of age under ambient temperature (20 ℃) and hightemperature (500 ℃). The addition of nano-silica enhanced the whole properties of the slag-based geopolymerconcrete. Addition of up to 8% nanosilica to the geopolymer concrete composition at 20% temperature improvedthe compressive strength test results up to 21.94%, tensile strength up to 15.19% and impact energy up to36.36%. Addition of up to 2% of polyolefin fibers to the geopolymer concrete composition improved the tensilestrength up to 11.76%, the impact energy up to 8.26 times and the compressive strength drop up to 22.49%.Applying high heat to geopolymer concrete samples reduced the compressive strength up to 16%, tensile strengthup to 21% and impact energy up to 72.72%. The effect of heat on the drop in results in control concrete is morethan geopolymer concrete. In the following, by conducting the SEM test, a ...
Experimental evaluation of compressive, tensile strength and impact test in blast furnace slag based geopolymer concrete, under high temperature
Mansourghanaei, Mohammadhossein (author) / Biklaryan, Morteza (author)
2022-10-22
doi:10.52547/JCER.4.2.12
Journal of Civil Engineering Researchers; Vol. 4 No. 2 (2022): Journal of Civil Engineering Researchers ; 12-21 ; 2538-516X
Article (Journal)
Electronic Resource
English
| Taylor & Francis Verlag | 2021