Review
Construction & Building Technology
Sarah Fernando, M. C. M. Nasvi, Chamila Gunasekara, David W. Law, Sujeeva Setunge, Ranjith Dissanayake
Summary: This paper comprehensively reviews the use of rice husk ash (RHA) in alkali-activated binders, highlighting the significant influence of raw material properties on gel matrix formation. It also discusses the unique reaction mechanisms of different precursors and the positive impact of RHA incorporation on compressive strength in certain binder systems. The literature presented in this paper is valuable for understanding the behavior of alkali-activated binders with RHA and advancing research in this field.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Construction & Building Technology
Yanlin Huo, Jinguang Huang, Dong Lu, Xiaoyu Han, Huayang Sun, Tianan Liu, Jianghong Wang, Fei Wang, Peng Tan, Meng Wang, Jingya Zhou, Yingzi Yang
Summary: This study aims to improve the mechanical properties and durability of alkali-activated slag concrete (AASC) by introducing rice husk ash (RHA) and silica fume (SF). The experimental results suggest that RHA and SF can substantially enhance the physical, mechanical, and durability properties of AASC. The study also finds that RHA has a more significant effect, possibly due to its higher silica content and finer particle size.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Construction & Building Technology
Xue Luo, Xunli Jiang, Qi Chen, Zhiyi Huang
Summary: The study developed a method to evaluate the hydration degree of blended cement considering the influence of temperature. The addition of RHA could reduce the apparent activation energy of blended cement, and the hydration degree of RHA cements is lower than that of OPC initially but the difference decreases with hydration progress.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Review
Green & Sustainable Science & Technology
Solomon Asrat Endale, Woubishet Zewdu Taffese, Duy-Hai Vo, Mitiku Damtie Yehualaw
Summary: This study reviews the properties of rice husk ash (RHA) and its impact on the properties of concrete when used as a partial cement replacement. RHA's pozzolanic property is determined by its amorphous silica content, specific surface area, and particle fineness. RHA blended cement concrete performs well in terms of fresh properties, mechanical properties, and durability properties. RHA has the potential to replace cement by up to 10% to 20% without compromising concrete performance, providing environmental benefits and contributing to a circular economy.
Article
Construction & Building Technology
Suhail Ahmad Khanday, Monowar Hussain, Amit Kumar Das
Summary: Peat is a geotechnically problematic material due to its high organic content, but can be stabilized using nontraditional materials like rice husk ash-based geopolymer. By adjusting the combination of binder content, concentration, and A/B ratio, the geopolymer can significantly increase the compressive strength of treated peat, filling pore spaces with cementitious products like zeolite.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Review
Crystallography
Mugahed Amran, Roman Fediuk, Gunasekaran Murali, Nikolai Vatin, Maria Karelina, Togay Ozbakkaloglu, R. S. Krishna, Ankit Kumar Sahoo, Shaswat Kumar Das, Jyotirmoy Mishra
Summary: Rice husk, a by-product material with high silica content, can be burnt to produce high pozzolanic reactive rice husk ash (RHA) for use as a mineral filler in concrete, improving technical characteristics and producing durable ecofriendly building materials. Utilizing RHA in concrete composites can create robust, sustainable, and highly resistant materials suitable for aggressive environments, addressing the global concern for greener construction practices.
Article
Environmental Sciences
Gurleenjot Kaur, Neetu Singh, Anita Rajor, Jai Prakash Kushwaha
Summary: Deep eutectic solvents (DES) have gained attention for their unique properties, and DES-RHA as a novel adsorbent shows promising potential for removing emerging pollutants from effluent sites with high adsorption and regeneration capacity.
JOURNAL OF CONTAMINANT HYDROLOGY
(2021)
Article
Construction & Building Technology
Abdeliazim Mustafa Mohamed, Maaz Osman Bashir, Samir Dirar, Nisreen Beshir Osman
Summary: The study focused on assessing the compressive strength of self-compacting concrete with different supplementary materials, improving the strength by raising the content of rice husk and fly ash. Various soft computing models were utilized to analyze the influence of cementitious materials on the strength of concrete, with ANFIS showing remarkable reliability in comparison to ANN and PSO.
STRUCTURAL CONCRETE
(2022)
Article
Construction & Building Technology
Md Habibur Rahman Sobuz, Ayan Saha, Jannatul Ferdous Anamika, Moustafa Houda, Marc Azab, Abu Sayed Mohammad Akid, Md Jewel Rana
Summary: This research aims to investigate the rheological and mechanical properties of self-compacting concrete (SCC) with waste galvanized copper wire fiber and rice husk ash (RHA). The addition of copper wire fiber decreases the fresh properties of SCC, while the inclusion of 2% RHA increases the viscosity of the concrete. The optimum SCC mixture is suggested to contain 2% RHA and 0.75% copper fiber, providing improved mechanical properties.
Article
Crystallography
Tariq Ali, Abdullah Saand, Daddan Khan Bangwar, Abdul Salam Buller, Zaheer Ahmed
Summary: The study demonstrates that using 10% rice husk ash as a partial replacement for cement in aerated concrete can improve the strength and durability properties of concrete.
Article
Construction & Building Technology
Henrique dos Santos Kramer, Alec Sobroza Daronco, Alexandre Silva de Vargas, Larissa Degliuomini Kirchhof, Eugenio Bastos da Costa, Rogerio Cattelan Antocheves de Lima
Summary: This study examined the impact of heating on concrete with partial replacement of cement with rice husk ash (RHA). The mechanical performance of the concrete improved with higher compressive strength up to a temperature of 400 degrees C, but the static modulus of elasticity degraded more sharply. No explosive spalling was observed for all temperatures tested, and there were no adverse effects from a mineral point of view.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2023)
Article
Construction & Building Technology
G. H. M. J. Subashi De Silva, S. Vishvalingam, T. Etampawala
Summary: The study found that incorporating waste RHA into the mortar can reduce bulk density while increasing compressive strength, enhance sulfate and acid resistance, and decrease weight loss when exposed to alkalis. Additionally, adding waste RHA can lower thermal conductivity and improve density, beneficial for enhancing strength and durability.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Materials Science, Characterization & Testing
Erbu Tian, Y. Frank Chen, Yizhou Zhuang, Wuhua Zeng
Summary: The study found that after grinding for 30 minutes, the surface area of RHA was largest and the workability of the mixture was best. Despite changes in the structure and activity of SiO2 in RHA at different burning temperatures, the performance of concrete incorporating RHA was higher than that of control concrete. Additionally, both carbonization resistance and frost resistance decreased with increasing burning temperature of RHA, but increased with increasing RHA content.
Article
Materials Science, Multidisciplinary
Nelson R. Camargo-Perez, Joaquin Abellan-Garcia, Luis Fuentes
Summary: The present research analyzes the feasibility of using Rice Husk Ash (RHA) as Supplementary Cementitious Materials (SCM) in concrete pavements, and identifies an efficient mix design that meets the strength and workability criteria using the highest RHA content in partial replacement of cement.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Environmental Sciences
Olayomi Abiodun Falowo, Oluwaseun O. Oyekola, Babatunde Oladipo, Abiola Ezekiel Taiwo, Adeyosola Ilesanmi, Oluwadabomi Davies
Summary: This study developed a magnetic solid acid catalyst for corncob hydrolysis. The Fe3O4/C-SiO2 catalyst possessed a porous surface with a high surface area and acid density. The hydrolysis of corncob using this catalyst showed an increase in sugar yield with reaction time and temperature, with the highest yield observed at 90°C. The reaction kinetics could be described by Saeman's and integral first-order models. The thermodynamic parameters indicated the favorable and stable nature of the hydrolysis process. The sulfonated Fe3O4/C-SiO2 catalyst also exhibited sustained activity after multiple reuses.
WASTE AND BIOMASS VALORIZATION
(2023)