scholarly journals Rice husk ash (RHA) as a partial cement replacement in modifying peat soil properties

2018 ◽  
Author(s):  
Nik Norsyahariati Nik Daud ◽  
Mohd Nazrin Mohd Daud ◽  
Abubakar Sadiq Muhammed
Keyword(s):  
Soil Properties ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Peat Soil ◽  
Cement Replacement ◽  
Partial Cement Replacement

Review paper: Performance of rice husk ash as a material for partial cement replacement in concrete

2021 ◽  
Author(s):  
Zaidatul Syahida Adnan ◽  
Nur Farhayu Ariffin ◽  
Sharifah Maszura Syed Mohsin ◽  
Nor Hasanah Abdul Shukor Lim
Keyword(s):  
Rice Husk ◽  
Review Paper ◽  
Rice Husk Ash ◽  
Cement Replacement ◽  
Partial Cement Replacement

scholarly journals Green and Sustainable Concrete – The Potential Utilization of Rice Husk Ash and Egg Shells

2019 ◽  
Vol 5 (1) ◽  
pp. 74 ◽  
Author(s):  
Ashfaque Ahmed Jhatial ◽  
Wan Inn Goh ◽  
Kim Hung Mo ◽  
Samiullah Sohu ◽  
Imtiaz Ali Bhatti
Keyword(s):  
Calcium Oxide ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Pozzolanic Reaction ◽  
Waste Materials ◽  
Co2 Gas ◽  
Cement Replacement ◽  
Sustainable Concrete ◽  
Partial Cement Replacement ◽  
Carbon Dioxide Co2

Concrete which is widely used material in the construction industry, has a carbon footprint. Approximately 10% of global Carbon Dioxide (CO2) gas is emitted during the production of cement which is vital ingredient of concrete. The increase in production of cement affects global warming and climate change. Therefore, many have attempts have been made to develop green and sustainable concrete by utilizing different waste materials. With the utilization of waste materials as cement replacement, the CO2 gas emissions can be reduced as well as resolve the environmental issues that the inhabitants face during the disposal of such waste materials. This paper reviews the potential and innovative utilization of Rice Husk Ash (RHA) and Eggshells as partial cement replacement to develop green concrete. RHA which is rich in silica and eggshells contain identical amount of calcium oxide as cement, when finely grinded and used together as partial cement replacement, can trigger a pozzolanic reaction, in which silica reacts with calcium oxide resulting in the formation of calcium silicates which are responsible for achieving higher strengths.

Properties of Concrete with Different Percentange of the Rice Husk Ash (RHA) as Partial Cement Replacement

2014 ◽  
Vol 803 ◽  
pp. 288-293 ◽  
Author(s):  
Mustaqqim Abdul Rahim ◽  
Norlia Mohamad Ibrahim ◽  
Zulliza Idris ◽  
Zuhayr Md Ghazaly ◽  
Shahiron Shahidan ◽  
...  
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Waste Product ◽  
Economic Problem ◽  
Cement Replacement ◽  
Pozzolanic Material ◽  
Chemical Content ◽  
Partial Cement Replacement ◽  
Pozzolanic Properties

The use of pozzolanic material from waste product as partial cement replacement in concrete contribute to reduce the environmental, economic problem through their waste and as well enhance the strength and properties of concrete. Rice husk ash (RHA) is one of the industrial waste that suitably used as a cement replacement due to its pozzolanic properties which can enhance the properties of concrete. In this study, the workability, compressive strength and water absorption of the concrete containg RHA is investigating. The chemical content of RHA also investigated by using X-ray Fluorescence Test (XRF). The different RHA percentage of 5%, 15% and 25% were used in this study with burning temperature 650°C. The concrete cube of size 100 mm x 100 mm x 100 mm were prepared and cured for 7, 14 and 28 days. Based on result, it was concluded that the optimum RHA replacement for cement in this report was 5 %, which provided the highest compressive strength at 28 days.

scholarly journals Efficiency of Rice Husk Ash as Cementitious Material in High-Strength Cement-Admixed Clay

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Pornkasem Jongpradist ◽  
Watee Homtragoon ◽  
Raksiri Sukkarak ◽  
Warat Kongkitkul ◽  
Pitthaya Jamsawang
Keyword(s):  
Fly Ash ◽  
Portland Cement ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Cement Content ◽  
High Strength ◽  
Compression Tests ◽  
Cement Replacement ◽  
Soil Cement ◽  
Partial Cement Replacement

The potential and efficiency of using rice husk ash (RHA) to add up or partially replace Portland cement in deep cement mixing technique are examined. A series of unconfined compression tests on cement-RHA-stabilized clay are conducted to investigate the influence of RHA on the mixture properties. Special attention is paid to its efficiency for increasing the strength by partial cement replacement to obtain high-strength soil cement, and it is compared with fly ash. Test results indicate that up to 35% of RHA could be advantageously added up to enhance the strength if the cement content in the mixture is larger than 10%. The RHA enhances the strength of cement-admixed clay by larger than 100% at 28 days. For curing time of 14 and 28 days, the RHA exhibits higher efficiency on Portland cement replacement when the cement and overall cementitious contents are not less than 20 and 35%, respectively. The optimum condition for high-strength mixture is achieved when RHA is added to the 20% cement content mixture. When compared with fly ash of similar grain size, the efficiency of RHA is higher when the content to be added is greater than 15%. This indicates the suitability of RHA for use in high-strength soil-cement.

scholarly journals Chemical Waste Ash

2019 ◽  
Author(s):  
Subandi
Keyword(s):  
Rice Husk ◽  
Rice Husk Ash ◽  
Chemical Waste ◽  
Cement Replacement ◽  
Paper Waste ◽  
Astm Method ◽  
Chemical Content

The use of waste ash, lately a lot of research is done, in the manufacture of concrete, which aims as an added material, SCM cement replacement material, and so forth. Some ashes that have been used in research into the manufacture of concrete have been tested on chemical content, to determine whether ash from HVS paper waste can be used as a mixture for making concrete, in this experiment the parameters of the chemical content are tested according to the chemicals contained in chemical chemistry. Chemical content research using ASTM method, from the results obtained ash from paper waste ash has a high CaO chemical content above 90%, when compared with the chemical from rice husk ash where the highest chemical content of rice husk ash is SiO2, Conclusion obtained that paper waste ash can be tested as a mixture in making concrete because it has a high CaO content, when compared with the chemical content of cement where the chemical content in cement has a higher CaO chemical content.

Strength of Concrete Containing Rice Husk Ash Subjected to Sodium Sulfate Solution via Wetting and Drying Cyclic

2014 ◽  
Vol 534 ◽  
pp. 3-8 ◽  
Author(s):  
Che Wan Che Norazman ◽  
Ramadhansyah Putra Jaya ◽  
Sri Jayanti Dewi ◽  
Badorul Hisham Abu Bakar ◽  
M.A. Fadzil
Keyword(s):  
Compressive Strength ◽  
Rice Husk ◽  
Sodium Sulfate ◽  
Rice Husk Ash ◽  
Blended Cement ◽  
Sulfate Solution ◽  
Target Strength ◽  
Type I ◽  
Cement Concrete ◽  
Cement Replacement

The influences of different replacement levels of rice husk ash (RHA) blended cement concrete subjected to 5% Na2SO4 solution via wetting-drying cycles was evaluated in this study. RHA was used as a Portland cement Type I replacement at the levels of 0%, 10%, 20, 30%, and 40% by weight of binder. The water-to-binder ratio was 0.49 to produce concrete having target strength of 40 MPa at 28 days. The performance of RHA blended cement concrete on compressive strength, reduction in strength and loss of weight was monitored for up to 6 months. The results of the compressive strength test have been shown that use of RHA in blended cement has a significant influence on sulfate concentration. When increasing the replacement level of RHA, the strength of concrete also increases in comparison to OPC concrete (except RHA40) even exposed to 5% Na2SO4 solution. On the other hand, the reduction in strength and weight loss of specimens increased with increase in the exposure time. Generally, it can be said that the incorporation of rice husk ash as cement replacement significantly improved the resistance to sulfate penetration of concrete. Finally, RHA cement replacement in concrete mixed provided better resistance to sodium sulfate attack up to 6-month exposure.

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