scholarly journals A STUDY ON EXPERIMENTAL INVESTIGATION USING CEMENT CONCRETE WITH VARIYING PERCENTAGE OF RICE HUSK ASH

2021 ◽  
Vol 05 (03) ◽  
pp. 01-06
Author(s):  
Dr.P. Valli ◽  
Dr.P.R. Dhevasenaa
Keyword(s):  
Experimental Investigation ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Cement Concrete

scholarly journals Sulfate Resistance of Rice Husk Ash Concrete

2018 ◽  
Vol 199 ◽  
pp. 02006 ◽  
Author(s):  
John Kamau ◽  
Ash Ahmed ◽  
Killian Ngong
Keyword(s):  
Compressive Strength ◽  
Magnesium Sulfate ◽  
Rice Husk ◽  
Sodium Sulfate ◽  
Rice Husk Ash ◽  
Cement Concrete ◽  
Strength Deterioration ◽  
Sulfate Resistance ◽  
Expansion Test ◽  
Sulfate Solutions

Durability of concrete is defined as its ability to resist deterioration after exposure to the environment of its use. This work investigates the performance of Rice Husk Ash (RHA) concrete in sodium sulfate (Na2SO4), magnesium sulfate (MgSO4) and combined Na2SO4 and MgSO4 solutions. Concrete bar specimens and cubes were prepared for expansion and strength deterioration tests respectively using RHA replacement at the 7.5% replacement by volume, which had achieved the highest compressive strength, as well as at the 30% replacement by volume, which was the highest replacement for the study. Strength deterioration tests were performed on the 7.5% replacement by the weight of cement. From the expansion test findings, it was concluded that at the 7.5% replacement, RHA could be used with an advantage over 100% cement concrete in MgSO4 environments, whereas at the 30% replacement, RHA could be used with an advantage over 100% cement concrete in both the Na2SO4 and mixed sulfate environments. RHA was also found to be more effective in resisting surface deterioration in all the sulfate solutions. The RHA specimens also exhibited superior strength deterioration resistance in comparison to the 100% cement specimens.

scholarly journals Impact of Rice Husk Ash on Cement Concrete

2018 ◽  
Vol Volume-2 (Issue-3) ◽  
pp. 1786-1790
Author(s):  
Surender Kumar ◽  
Bipin Kumar Singh ◽  
Vikas Kumar Pandey ◽  
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Cement Concrete

Effect of Rice Husk Ash Fineness on the Properties of Concrete

2014 ◽  
Vol 554 ◽  
pp. 203-207 ◽  
Author(s):  
Sri Jayanti Dewi ◽  
Putra Jaya Ramadhansyah ◽  
Abdul Hassan Norhidayah ◽  
A. Aziz Md. Maniruzzaman ◽  
Mohd Rosli Hainin ◽  
...  
Keyword(s):  
Rice Husk ◽  
Permeability Coefficient ◽  
Rice Husk Ash ◽  
Gas Permeability ◽  
Blended Cement ◽  
Target Strength ◽  
Cement Concrete ◽  
Mechanical Grinding ◽  
Binder Ratio ◽  
Water To Binder Ratio

In the present research, the effect of rice husk ash fineness on the properties of concrete was studied. Eight different fineness grades of rice husk ash were examined. A rice husk ash dosage of 15% by weight of binder was used throughout the experiments. The water-to-binder ratio was 0.49 to produce concrete having target strength of 40MPa at 28 d. Workability, compressive strength and gas permeability tests were carried out to identify the properties of concrete. The results revealed that increasing the fineness of RHA by mechanical grinding was found to improve the workability of RHA blended cement concrete. In addition, the use of RHA3 with mean particle size of 9.52μm produces the concrete with good strength. Finally, significant improvement was observed in mixtures incorporating RHA in terms of permeability coefficient.

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