The Effect of Mixing Rice Husk Ash and Palm Oil Boiler Ash on Concrete Strength
Karya Sinulingga,
Harry Agusnar,
Basuki Wirjosentono,
Zakaria Mohd. Amin
Issue:
Volume 3, Issue 2, April 2014
Pages:
9-14
Received:
5 April 2014
Accepted:
18 April 2014
Published:
30 April 2014
DOI:
10.11648/j.ajpc.20140302.11
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Abstract: Physical properties such as compressive strength and tensile strength of concrete can be changed by adding a mixture of rice husk ash and palm oil boiler ash in concrete. The rate of absorption of water by the concrete mixed with rice husk ash and mixed with palm oil boiler ash was further tested. Levels addition of the mixture to be tested is 5%, 10%, 15% , and 20% by long immersion for 7 days, 14 days, 21 days, 28 days, and 60 days. Tests on the compressive strength and modulus of elasticity of concrete from a wide variation in the mixture, analyzed by XRD (X - ray diffractometry). Analysis of the surface morphology and content of elements contained in the sample of natural bentonite, used Scanning Electron Microscopy (SEM). The test results showed the addition of a mixture of rice husk ash, palm oil boiler ash , and the addition of a mixture of both, ideal on concrete that has the addition of a mixture of 5% composition. With the addition of the concrete mix results in a SiO2 content of the concrete is reduced. Significant content of SiO2 is with a mixture of 5% rice husk ash. Compressive strength and modulus of elasticity of concrete with rice husk ash mixture 5% higher than the others.
Abstract: Physical properties such as compressive strength and tensile strength of concrete can be changed by adding a mixture of rice husk ash and palm oil boiler ash in concrete. The rate of absorption of water by the concrete mixed with rice husk ash and mixed with palm oil boiler ash was further tested. Levels addition of the mixture to be tested is 5%...
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The Use of Solid Waste in Rubber Gloves Industry and Natural Polyurethane in Making Sound Dumping Polymer’s Roof
Kurnia Sembiring,
Eddy Marlianto,
Thamrin,
Ridwan Sani
Issue:
Volume 3, Issue 2, April 2014
Pages:
15-18
Received:
4 April 2014
Accepted:
28 April 2014
Published:
10 May 2014
DOI:
10.11648/j.ajpc.20140302.12
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Abstract: Polymer’s roof has been done using solid waste in rubber gloves industry with the best mixing composition from the making of polymer’s roof. Samples from any composition, which is done thus being pressed by hot compressor with temperature 150 0C during 30 minutes. After providing samples, examining the physical and mechanical properties, include testing the surface of SEM, DSC, absorption from XRD, and sound dumping. The results shows that an addition of rubber waste causes the absorption and porosity decreasing, while flexural strength and effect increasing. The result from DSC shows that samples have an endurance from 300 - 470 0C, while SEM shows that the shape of surface from some samples are less homogeneous. The result from absorption using XRD seems that samples absorb as another sample, which is the more addition of rubber waste, the bigger intensity of absorption. From the sound dumping test by thick of samples about 5 x 10-3 m producing the sound dumping to the average samples with α = 0,138. From the result above, polymer’s roof is so suitable which physical and mechanical properties, which is needed by the standard polymer’s roof.
Abstract: Polymer’s roof has been done using solid waste in rubber gloves industry with the best mixing composition from the making of polymer’s roof. Samples from any composition, which is done thus being pressed by hot compressor with temperature 150 0C during 30 minutes. After providing samples, examining the physical and mechanical properties, include te...
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Theoretical and Experimental Investigations on Molecular Structure, IR, NMR Spectra and HOMO-LUMO Analysis of 4-Methoxy-N-(3-Phenylallylidene) Aniline
Kürşat Efil,
Yunus Bekdemir
Issue:
Volume 3, Issue 2, April 2014
Pages:
19-25
Received:
19 April 2014
Accepted:
4 May 2014
Published:
20 May 2014
DOI:
10.11648/j.ajpc.20140302.13
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Abstract: In this study, 4-Methoxy-N-(3-phenylallylidene) aniline has been synthesized and characterized by FTIR and NMR spectroscopic techniques. The optimized geometrical structure, vibrational frequencies and NMR shifts of title molecule were obtained by using ab initio HF and density functional method (B3LYP) with 6-31G* basis set. The experimental and calculated geometrical parameters were compared with each other. The calculated infrared (IR) and NMR data were compared with experimental values using HF and B3LYP/6-31G* level of theory. It was found to be a good correlation between experimental and calculated data. In addition, HOMO and LUMO analysis of title molecule were calculated using corresponding methods with 6-31G* basis set. The calculated HOMO-LUMO energies were used to calculate some properties of title molecule.
Abstract: In this study, 4-Methoxy-N-(3-phenylallylidene) aniline has been synthesized and characterized by FTIR and NMR spectroscopic techniques. The optimized geometrical structure, vibrational frequencies and NMR shifts of title molecule were obtained by using ab initio HF and density functional method (B3LYP) with 6-31G* basis set. The experimental and c...
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