Characterization and investigation of the use of oat husk ash as supplementary cementitious material as partial replacement of Portland cement: Analysis of fresh and hardened properties and environmental assessment

被引：26

作者：

Ruviaro, Artur Spat ^{[1
,5
]}

Lima, Geannina Terezinha dos Santos ^{[2
]}

Silvestro, Laura ^{[3
]}

Barraza, Madeleing Taborda ^{[1
]}

Rocha, Janaide Cavalcante ^{[2
]}

de Brito, Jorge ^{[4
]}

Gleize, Philippe Jean Paul ^{[1
]}

Pelisser, Fernando ^{[1
]}

机构：

[1] Fed Univ Santa Catarina UFSC, Dept Civil Engn, Lab Applicat Nanotechnol Civil Construct LabNANOTE, Florianopolis, SC, Brazil

[2] Fed Univ Santa Catarina UFSC, Dept Civil Engn, Lab Waste Valorizat & Sustainable Mat ValoRes, Florianopolis, SC, Brazil

[3] Fed Univ Technol Parana UTFPR, Civil Engn Coordinat, Guarapuava, Brazil

[4] Univ Lisbon, Dept Civil Engn Architecture & Georesources, CERIS, Inst Super Tecn, Lisbon, Portugal

[5] Rua Joa Pio Duarte Silva 205, BR-88040900 Florianopolis, SC, Brazil

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2023年 / 363卷

关键词：

Oat husk ash; Biomass; Portland cement; Supplementary cementitious material; Hydration kinetics; Eco-efficiency index; RICE HUSK; POZZOLANIC ACTIVITY; RHEOLOGICAL BEHAVIOR; MINERAL ADMIXTURES; SUGARCANE BAGASSE; POTENTIAL USE; HYDRATION; PERFORMANCE; LIMESTONE; BIOMASS;

D O I：

10.1016/j.conbuildmat.2022.129762

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The use of biomass has been emerging as a worldwide trend. Although biomass is a renewable energy source, the disposal of generated by-products is an issue. A material with great potential for this purpose is oat husk. Nevertheless, no study has systematically investigated the influence of burning temperature on the characteristics of oat husk ash (OHA) and the use of this by-product as a supplementary cementitious material (SCM) and its influence on the properties in the fresh and hardened state of cementitious materials. The results showed that replacing up to 20 % of Portland cement with OHA burned at a temperature of 600 degrees C without compromising the cement pastes 7-d and 28-d compressive strength. The environmental analysis demonstrated the potential of oat husk as biomass and similar to 24 % reductions in the eco-efficiency index of the composite matrices with 20 wt% OHA. Thus, this work identified the technical and environmental potential for the use of OHA as SCM for the production of sustainable cement-based materials.

引用

页数：20

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