A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Use of Coconut Husk Ash, Com Cob Ash and Peanut Shell Ash as Pozzolana
This research is conducted to develop new kinds of pozzolana from otheragricultural wastes apart from rice husk and rice straw. The study investigated the use ofcoconut husk. corn cob and peanut shell ash as pozzolana. A series of experiments wereconducted to determine the properties of coconut hush ash, corn cob ash and peanutshell ash which are referred here as CHA. CCA and PSA respectively, and the propertiesof paste and mortar having a certain percent replacement of cement by these ashes. Theproperties of CHA. CCA and PSA namely specific gravity, fineness, chemical compositionand the strength activity index with Portland cement were determined. For properties ofpaste, only ordinary Portland cement and 30% PSA were investigated for normalCOnsistency and initial and final setting time. To determine the compressive strength,truee mixes were cast for CHA having a percent replacement of 0, 35 and 50 percent andfour mixes were cast for both CCA and PSA haVing a percent replacement of 0, 20, 30 and40 percent. Ordinary Portland cement Type I was used and water content was controlledto have a flow of 105-115% for all mortars. To investigate the influence of water tocementitious material ratio, four mixes were made to determine the optimum watercontent. Four kinds of mortar namely ordinary Portland cement, rice husk ash, CCA and PSA were also tested for sulphate and acidic attacks.Experimental results revealed that coconut husk ash cannot be utilized aspozzolana while CCA and PSA can be classified as F and N pozzolana respectively. CCAmortars have lower compressive strength than the controlled mortar (0% CCA) while PSAmortars showed higher compressive strength than the controlled mortar (0% PSA).Among the four mortars tested for chemical attack, PSA mortars showed higher resistanceagainst sulphate attach and RHA against acidic attack.
Use of Coconut Husk Ash, Com Cob Ash and Peanut Shell Ash as Pozzolana
This research is conducted to develop new kinds of pozzolana from otheragricultural wastes apart from rice husk and rice straw. The study investigated the use ofcoconut husk. corn cob and peanut shell ash as pozzolana. A series of experiments wereconducted to determine the properties of coconut hush ash, corn cob ash and peanutshell ash which are referred here as CHA. CCA and PSA respectively, and the propertiesof paste and mortar having a certain percent replacement of cement by these ashes. Theproperties of CHA. CCA and PSA namely specific gravity, fineness, chemical compositionand the strength activity index with Portland cement were determined. For properties ofpaste, only ordinary Portland cement and 30% PSA were investigated for normalCOnsistency and initial and final setting time. To determine the compressive strength,truee mixes were cast for CHA having a percent replacement of 0, 35 and 50 percent andfour mixes were cast for both CCA and PSA haVing a percent replacement of 0, 20, 30 and40 percent. Ordinary Portland cement Type I was used and water content was controlledto have a flow of 105-115% for all mortars. To investigate the influence of water tocementitious material ratio, four mixes were made to determine the optimum watercontent. Four kinds of mortar namely ordinary Portland cement, rice husk ash, CCA and PSA were also tested for sulphate and acidic attacks.Experimental results revealed that coconut husk ash cannot be utilized aspozzolana while CCA and PSA can be classified as F and N pozzolana respectively. CCAmortars have lower compressive strength than the controlled mortar (0% CCA) while PSAmortars showed higher compressive strength than the controlled mortar (0% PSA).Among the four mortars tested for chemical attack, PSA mortars showed higher resistanceagainst sulphate attach and RHA against acidic attack.
Use of Coconut Husk Ash, Com Cob Ash and Peanut Shell Ash as Pozzolana
Cbatveera, B. (author) / NtmJtyonglkul, P. (author)
2013-04-25
Engineering and Applied Science Research; Vol 21 No 1-2 (1994); 1-20 ; 2539-6218 ; 2539-6161
Article (Journal)
Electronic Resource
English
DDC:
690
Use of Coconut Husk Ash, Corn Cob Ash and Peanut Shell Ash As Cement Replacement
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