Pozzolanic behavior and durability of high performance biocements containing bamboo leaf ash

• Grant number: 17/21563-4
• Support Opportunities: Scholarships abroad - Research Internship - Master's degree
• Effective date (Start): March 01, 2018
• Effective date (End): August 31, 2018
• Field of knowledge: Applied Social Sciences - Architecture and Town Planning - Architecture and Urbanism Technology
• Principal Investigator: Jorge Luís Akasaki
• Grantee: Maria Júlia Bassan de Moraes
• Supervisor: Jorge Juan Paya Bernabeu
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil
• Research place: Universitat Politécnica de Valéncia (UPV), Spain
• Associated to the scholarship: 16/16403-5 - New high performance biocements: use of bamboo leaf ash, BP.MS

Abstract

The pozzolanic materials are a known for their technical and environmental advantages when used for replacing partially the Portland cement. They are a group of heterogeneous materials and although they have been researched for years, it is difficult to fit them into a specific rule to follow. Thus, the importance of a profound and wide analysis, by means of different tests to verify the pozzolanicity of certain materials, since the results correlate with each other, and more important, is the search of researchers to develop new ways of assessing these materials. The proposal of the study which is being developed in Brazil (FAPESP process n° 2016/16403-5) is to assess the bamboo leaf ash (BLA) as pozzolanic material to be used as a sustainable and high-performance alternative for Portland cement partial replacement. The partial results showed that the studied BLA is mainly composed of silica (74.23%), presents an amorphous nature and presents high reactivity at early ages. The aim of this research internship is to assess new aspects of the BLA regarding its amorphous silica content and reactivity by means of determination of the amorphous silica content, electrical conductivity and pH measurements and Frattini test, as well assess the effect on the durability when used as partial replacement for Portland cement in cementitious matrices by means of mercury intrusion porosimetry (MIP) and resistance to acid attack analysis, correlating with the results obtained in the research developed in BRAZIL. The student also intends to acquire knowledge by learning and understanding the news methods of analysis developed and proposed by the research group Química de los Materiales (GIQUIMA) - Universitat Politècnica de València, as well have the Prof. Dr. Jordi Payá Bernabeu as consultant for results analysis and article writing.

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MORAES, M. J. B.; MORAES, J. C. B.; TASHIMA, M. M.; AKASAKI, J. L.; SORIANO, L.; BORRACHERO, M. V.; PAYA, J.. Production of bamboo leaf ash by auto-combustion for pozzolanic and sustainable use in cementitious matrices. CONSTRUCTION AND BUILDING MATERIALS, v. 208, p. 369-380, MAY 30 2019. (16/16403-5, 17/21563-4)