TEMPERATURE EFFECTS ON GROUNDNUT SHELL ASH CONCRETE
Keywords:
compressive strength, blended concrete, temperature, groundnut shell ashAbstract
The effects of groundnut shell ash on concrete and its fire resistance capabilities were studied. One hundred and eighty four (184) blended concrete samples were carried out dosed with 5 %, 10 % and 15 % groundnut shell ash in weighted percentages. Curing were done and the blended concrete were evaluated at 7 days, 28 days, 30 days, 60 days, 90 days, 120 days, 150days and 200 days respectively. Exposure of the blended samples to temperatures of 100 o C, 200 o C, 300 o C, 400 o C, 500 o C, 600 o C and 700 o C in a muffle electric furnace for the duration of 2 hours were carried out. It was reported that an increase of compressive strength was observed, beyond the control’s concrete between 90 days and 200 days of curing for the 5 % by weight of GSA blended concrete. The 5 % by weight of groundnut shell ash concrete and control concrete fire resistance ranged between (60 %-81.4 %) for (200 oC-400 oC), (36.5 %-40.9 %) at 500 oC, and (17.2 %-22.3 %) for (600 oC-700 oC). The 5 % by weight of GSA concrete may have a good prospect in harsh and hazardous environment not exceeding 100 oC when cured up to 200 days period.
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