Article
Construction & Building Technology
Guilherme Miguel Amantino, Nicole Pagan Hasparyk, Francieli Tiecher, Romildo Dias Toledo Filho
Summary: This study evaluates the performance of bio-concrete using rice waste as bio-aggregates. The results show that the addition of bio-aggregates can improve the thermal performance of the concrete, but also lead to a decrease in mechanical properties and an increase in plastic deformation.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Polymer Science
Obinna E. Ezenkwa, Azman Hassan, Sani A. Samsudin
Summary: The study found that rice husk imparts better reinforcing effect in PP composite than rice husk ash, while MAPP is a better compatibilizer. SEM study indicates that both compatibilizers improved the filler-matrix interfacial adhesion.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Construction & Building Technology
Virginia Barbieri, Magdalena Lassinantti Gualtieri, Tiziano Manfredini, Cristina Siligardi
Summary: This research explores the use of modified magnesium oxysulfate cement to manufacture lightweight concretes using wheat husk and hemp hurd as bio-aggregate. Through detailed microstructural studies, the mechanical and thermal properties of different concretes were revealed. The study suggests that the developed lightweight concretes are technologically competitive and have the advantage of high early strength.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Qiang Su, Jinming Xu
Summary: The use of glass sand and rice husk ash in concrete production saves natural sand resources and promotes waste recycling. The pozzolanic effect of rice husk ash reduces the alkali-silica reaction caused by glass sand and cement slurry. The addition of glass sand improves tensile strength and cyclic compression performance, while rice husk ash enhances compressive and splitting tensile strength.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Polymer Science
Anna Raffaela de Matos Costa, Juliana Cysneiros Lima, Raquel dos Santos, Lhaira Souza Barreto, Mariana Alves Henrique, Laura Hecker de Carvalho, Yeda Medeiros Bastos de Almeida
Summary: This study investigates the rheological, morphological, and thermal properties of composites with different compositions, showing that thermal stability and degradation during processing are dependent on matrix composition and filler concentration. SEM images reveal partial adhesion of filler to matrices and filler pullout, while optical microscopy demonstrates particle agglomeration increasing with filler content. FTIR analysis indicates a shifting of absorption bands and selective dispersion of RHA through hydrogen bonding, supporting the idea of developing polymer composites with improved properties using the filler employed in this study.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Construction & Building Technology
V Jittin, A. Bahurudeen
Summary: The study evaluated the performance of a ternary blended cementitious system using sugarcane bagasse ash and rice husk ash, showing improvements in compressive strength and reductions in chloride permeability, water sorptivity index, and porosity. The addition of bagasse ash and rice husk ash increased the yield stress, plastic viscosity, and consistency index of the blended concrete. X-ray diffractogram and thermal analysis revealed a decrease in portlandite in the blended samples.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Chemistry, Physical
Elena Ferretti, Massimo Moretti, Alberto Chiusoli, Lapo Naldoni, Francesco de Fabritiis, Massimo Visona
Summary: This paper focuses on the use of a particular type of biocomposite, namely rice-husk-lime biocomposite, as a stabilizer for 3D printed earthen mixtures in building construction. The research aims to enhance the long-term mechanical properties of the hardened product by investigating the effect of shredded vegetable fiber on the material. The study compares uniaxial compression test results of cubic specimens made with shredded and unaltered vegetable fiber for different curing periods, and finds that the hardened earthen mixture exhibits peculiar behaviors that defy the characteristics of brittle materials. The study also highlights the natural vulcanization process that occurs over time due to the mineralization of the vegetable fiber by the carbonation of the lime.
Article
Construction & Building Technology
Yixin Zhao, Bing Chen, Hanjuan Duan
Summary: With the increasing commercialization of fly ash and slag, there is a need to reduce slag consumption and utilize China's large rice husk production to introduce rice husk ash (RHA) as the raw material. In this experiment, the influence of the amount of RHA on compressive strength, flexural strength, water absorption and moisture absorption coefficient was studied. The test results show that 60% RHA and 40% slag (R6S4) together as the precursors can obtain the best mechanical properties.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Materials Science, Composites
Guojie Zhang, Ge Wang, Yang Jiang, Shifeng Wang, Yong Zhang
Summary: Rice husk ash silica is a bio-based silica that has gained attention as a sustainable raw material. Experimental results show that it can replace traditional silica in tire rubbers, providing similar mechanical properties and higher wet grip. The wet mixing method successfully disperses the bio-based silica in natural rubber latex, resulting in a composite with improved properties compared to traditional dry mixing. This green and sustainable approach offers excellent mechanical properties, low rolling resistance, high abrasion resistance, and wet grip for tire tread rubbers.
POLYMER COMPOSITES
(2023)
Article
Construction & Building Technology
Maelson M. Souza, Marcos A. S. Anjos, Maria V. V. A. Sa
Summary: The study demonstrates the technical feasibility of using scheelite residue and rice husk ash to produce Lightweight Aggregates (LWAs) with significant environmental impacts and favorable properties for LWA development. The manufactured aggregates showed properties at least similar to commercial LWAs, indicating the viability of using SPR and RHA for LWA production.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Chemistry, Physical
Andres Salas Montoya, Chul-Woo Chung, Ji-Hyun Kim
Summary: The search for high-quality non-crystalline silica for high-performance concrete has led researchers to investigate the use of rice husk ash (RHA). This paper presents an experimental study on the use of highly reactive RHA as a replacement for Portland cement, comparing its performance with conventional silica fume (SF). The results show that concrete with RHA exhibits improved compressive and flexural strength, and comparable chloride ion penetration resistance to SF.
Article
Construction & Building Technology
Nicole Pagan Hasparyk, Sandro Marden Torres, Francieli Tiecher, Guilherme Amantino, Wesley Maciel de Souza
Summary: This experimental study examines the behavior of cement composites containing rice husk ash after undergoing high thermal curing. The study involves specific thermal curing and exposure conditions over a year to evaluate the level of damage and integrity of the composites. The results show that while the rice husk ash can reduce expansion, it is insufficient to completely mitigate and prevent delayed ettringite formation and resulting damage.
ADVANCES IN CEMENT RESEARCH
(2023)
Article
Construction & Building Technology
Gloria Anto, K. Athira, Nishant A. Nair, T. Yeshwanth Sai, Ankur Laxman Yadav, V. Sairam
Summary: This study investigates the influence of adding rice husk ash (RHA) and nano silica (NS) on the strength and durability properties of Portland cement (PC) mixture. The results show that the samples containing NS have significantly improved compressive strength. The highest compressive strength and flexural strength are found in the PC-based mixture containing 10% RHA and 3% NS after 28 days. Additionally, this composition also exhibits reduced water absorption and mass loss under acid attack. The combination of 10% RHA and 3% NS shows a positive contribution to the durability properties.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Construction & Building Technology
Mustafa Saridemir, Serhat Celikten
Summary: The study investigated the effect of binary blended on alkali activated lightweight aggregate concretes, revealing that AALWACs have higher strength compared to control concrete. Additionally, exposure to high temperatures results in changes and deterioration in the microstructures of AALWACs.
CONSTRUCTION AND BUILDING MATERIALS
(2022)
Article
Food Science & Technology
Cunshe Chen, Ping Liu, Jinnuo Cao, Zhixuan Ouyang, Zhihua Pang
Summary: The effects of mixing rice starch and oat flour on the pasting properties, particle size, rheology, and tribological properties were investigated. The presence of oat flour inhibited starch pasting and increased the pasting temperature and peak viscosity of the mixed system. The mixing of rice starch and oat flour resulted in a decrease in particle size, with the smallest particle size observed in the RS/OF 9/1 ratio. Shear dilution behavior was observed in all samples, and the viscosity of the system significantly increased at a 10 wt% RS content. The friction of the mixture was usually between the two individual components at sliding speeds higher than 1 mm/s, confirming an association or interaction between the two polymers.
Article
Critical Care Medicine
Leticia Helena de Souza Simoni, Daniele Oliveira dos Santos, Hugo Celso Dutra de Souza, Jose Antonio Baddini-Martinez, Marcel Koenigkam Santos, Ada Clarice Gastaldi
Article
Respiratory System
Ricardo Grassi Moroli, Daniele Oliveira dos Santos, Hugo Celso Dutra de Souza, Larissa Perossi, Mayte Assuncao Ribeiro, Jessica Perossi, Jose Antonio Baddini-Martinez, Ada Clarice Gastaldi
Summary: The study evaluated the effects of controlled voluntary hyperinflation and increased respiratory rate on the mechanics of the respiratory system in bronchiectasis patients during exercise. It was found that tachypnea increases the resistance and reactance of the respiratory system in bronchiectasis patients, and voluntary hyperinflation can attenuate this increase. These results may guide the development of strategies to reduce physical activity limitations in patients with bronchiectasis.
ARCHIVOS DE BRONCONEUMOLOGIA
(2021)
Article
Construction & Building Technology
M'hamed Yassin Rajiv da Gloria, Vanessa Maria Andreola, Daniele Oliveira Justo dos Santos, Marco Pepe, Romildo Dias Toledo Filho
Summary: This study introduces a generalized method for designing moldable bio-concretes, utilizing three types of vegetable residues as bio-aggregates, alongside a detailed physical and morphological characterization of these bio-aggregates and their compatibility with cement-based matrices. Through comprehensive experiments, the influence of bio-aggregates on the performance of bio-concretes at hardened state was analyzed, revealing a relationship between compressive strength, water-to-cement ratio, cement consumption, and bio-concrete density.
JOURNAL OF BUILDING ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Daniele Oliveira dos Santos, Larissa Perossi, Jessica Perossi, Leticia Helena de Souza Simoni, Mayara Holtz, Ricardo Grassi Moroli, Jose Antonio Baddini-Martinez, Ada Clarice Gastaldi
Summary: IOS is a promising tool for differentiating between healthy individuals and those with respiratory diseases such as bronchiectasis and COPD. Specific parameters of IOS, particularly in the expiratory phase, show significant differences between BE and COPD groups. Further studies are needed to confirm these findings and explore the full potential of IOS in diagnosing and monitoring respiratory diseases.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Alessandra Fabiane Lago, Anibal Basile-Filho, Anamaria Siriani de Oliveira, Hugo Celso Dutra de Souza, Daniele Oliveira dos Santos, Ada Clarice Gastaldi
Summary: This study aimed to investigate the metabolic effects of NMES in patients with septic shock. The results showed that NMES, whether performed in the early or late phase of septic shock, had no significant impact on the patients' metabolism.
Article
Multidisciplinary Sciences
Larissa Perossi, Mayara Holtz, Daniele Oliveira Dos Santos, Jessica Perossi, Hugo Celso Dutra de Souza, Wilson Salgado Junior, Ada Clarice Gastaldi
Summary: The study found that women with morbid obesity have increased airway resistance, which can impair their walking capacity. The impulse oscillometry system (IOS) is able to detect changes in airway resistance before symptoms appear, while spirometry tests cannot detect this issue.
Article
Multidisciplinary Sciences
Jessica Perossi, Marcel Koenigkam-Santos, Larissa Perossi, Daniele Oliveira dos Santos, Leticia Helena de Souza Simoni, Hugo Celso Dutra de Souza, Ada Clarice Gastaldi
Summary: This study found that compartmentalized methods for assessing the respiratory system, such as impulse oscillometry system (IOS) and quantitative analysis of computed tomography (CT), have a good correlation with the severity and dyspnea in non-cystic fibrosis bronchiectasis (NCFB) patients.
Article
Multidisciplinary Sciences
Mayara Holtz, Larissa Perossi, Jessica Perossi, Daniele Oliveira dos Santos, Hugo Celso Dutra de Souza, Ada Clarice Gastaldi
Summary: Body posture affects respiratory system impedance, with higher impedance observed in obese individuals, especially in the seated position. Supine position leads to higher impedance values. The differences between right and left lateral decubitus positions are minimal. The increased impedance in obese subjects is mainly attributed to peripheral resistance.
Meeting Abstract
Critical Care Medicine
D. O. Dos Santos, B. Galli, L. Perossi, J. Perossi, A. Lago, S. Rosa, L. S. Reis, A. d. Rodrigues, A. Gastaldi
AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE
(2021)
Meeting Abstract
Respiratory System
Beatriz Galli, Daniele Oliveira Santos, Ricardo Grassi Moroli, Mayte Assuncao Ribeiro, Ivan Enrique Flores Ottoni, Jose Antonio Baddini-Martinez, Ada Clarice Gastaldi
EUROPEAN RESPIRATORY JOURNAL
(2019)
Meeting Abstract
Respiratory System
Larissa Perossi, Jessica Perossi, Daniele Santos, Mayte Assuncao, Ricardo Moroli, Wilson Salgado, Ada Gastaldi
EUROPEAN RESPIRATORY JOURNAL
(2019)
Meeting Abstract
Respiratory System
Daniele Santos, Beatriz Andresa Da Silva Galli, Ricardo Grassi Moroli, Jessica Perossi, Larissa Perossi, Jose Antonio Baddini-Martinez, Ada C. Gastaldi
EUROPEAN RESPIRATORY JOURNAL
(2019)
Meeting Abstract
Respiratory System
Mayara Holtz De Paula, Larissa Perossi, Daniele Santos, Alessandra Lago, Jose Antonio Baddini-Martinez, Ada Gastaldi
EUROPEAN RESPIRATORY JOURNAL
(2018)
Meeting Abstract
Critical Care Medicine
R. Moroli, D. O. Santos, L. Perossi, M. Holtz, J. A. Baddini-Martinez, A. Gastaldi
AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE
(2018)
