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.

Effective Utilization of Industrial and Agricultural Waste for Developing Sustainable Self-Compacting Concrete

2022 ◽  
Vol 1048 ◽  
pp. 376-386
Author(s):  
M.S. Riyana ◽  
Dhanya Sathyan ◽  
M.K. Haridharan
Keyword(s):  
Mechanical Properties ◽  
Fly Ash ◽  
Portland Cement ◽  
Rice Husk ◽  
Ordinary Portland Cement ◽  
Rice Husk Ash ◽  
Cement Content ◽  
Supplementary Cementitious Materials ◽  
Ternary Blend ◽  
Self Compacting Concrete

SCC (Self compacting concrete) can fill formwork and encloses reinforcing bars under gravity and maintains homogeneity without vibration. SCC shortens the period of construction, guarantees compaction in confined zones, moreover terminates noise due to vibration. The wide spread application of SCC is restricted because of the high cost for the production of SCC with high cement content and chemical admixtures. In order to make the production of SCC economical, and to reduce the high cement content the Ordinary Portland Cement in SCC can be blended with pozzolanic materials like rice husk ash and supplementary cementitious materials like fly ash. In this paper the fresh state properties and mechanical properties such as compressive strength, split tensile strength and flexural strength of SCC with ternary blends of rice husk ash (RHA) and fly ash (FA) were studied. For this purpose, different mixes were prepared by replacing Ordinary Portland Cement (OPC) with 5%, 10%, 15% and 20% of rice husk ash (RHA) and the percentage of addition of fly ash (FA) is fixed as 15% for all these mixes. It was observed that the specimen incorporating 10% of rice husk ash (RHA) and 15% of fly ash (FA) as ternary blend exhibits better mechanical properties such as: Compressive, split tensile and flexural strengths at 28 days of age as compared to traditional mix of SCC without RHA (Rice Husk Ash) and FA (Fly Ash). This research demonstrates that the ideal percentage for a mixture of rice husk ash (RHA) and fly ash as ternary blend is 10% and 15% respectively.

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 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

scholarly journals Combine Effect of Rice Husk Ash and Fly Ash on Concrete by 30% Cement Replacement

2013 ◽  
Vol 51 ◽  
pp. 35-44 ◽  
Author(s):  
Satish H. Sathawane ◽  
Vikrant S. Vairagade ◽  
Kavita S. Kene
Keyword(s):  
Fly Ash ◽  
Combine Effect ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Cement Replacement

The Properties of Nanocarbontubes Cement Mortar Incorporating Mineral Additives

2014 ◽  
Vol 875-877 ◽  
pp. 383-387 ◽  
Author(s):  
Teuku Ferdiansyah ◽  
Hashim Abdul Razak
Keyword(s):  
Compressive Strength ◽  
Fly Ash ◽  
Silica Fume ◽  
Rice Husk ◽  
Electrical Resistance ◽  
Rice Husk Ash ◽  
Cement Mortar ◽  
Cement Content ◽  
Cement Ratio ◽  
Mineral Additives

The purpose of this paper is to discuss the influence of mineral additives i.e. metakaolin, silica fume, rice ash and fly ash incorporating with nanocarbontubes mortar composites. The effects on compressive strength at 28 days were also discussed and presented. Cement content of 500 kg/m3, water/cement ratio of 0.6 and aggregate/cement ratio of 2.75 were adopted for the mix propotion. 1%, 3% and 5% of nanocarbontubes in mortar were combined with 15% of mineral additives. The results show that mixtures of nanocarbontubes with 15% of metakaolin produce better strength compared to normal mortar. Meanwhile with addition of fly ash and rice husk ash the strength were decreased. The electrical resistance for all mixes at 28 days were also discussed and presented. The higher percentages of nanocarbon with addition of all mineral additives resulted in lower electrical resistance properties

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.

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