Combined Use of Ladle Furnace Slag and Rice Husk Ash as a Supplementary Cementitious Material

被引：0
|
作者：
de Souza, Everton de Freitas Cordova [1 ]
da Silva, Tayna Fracao [1 ]
de Castro, Mylena Alves [2 ]
Ferreira, Gisleiva Cristina dos Santos [1 ,2 ]
机构：
[1] Univ Estadual Campinas, Fac Engn Civil Arquitetura & Urbanismo, Rua Saturnino de Brito 224, Cidade Univ Zeferino V, BR-13083889 Campinas, SP, Brazil
[2] Univ Estadual Campinas, Fac Tecnol, Rua Paschoal Marmo 1888, BR-13484332 Limeira, SP, Brazil
来源：
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS | 2023年 / 26卷 / suppl 1期
关键词：
industrial waste; binder; portland cement; mortar; sustainable construction;
D O I：
10.1590/1980-5373-MR-2023-0069
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Ladle Furnace Slag (LFS) is a solid waste from steel production that can be used in civil construction due to its high content of calcium oxides (> 50% CaO), contributing to the sustainability of both industries. Seeking to study its function as a supplementary cementitious material, the objective of this work was to determine the properties of coating mortars with the replacement of Portland Cement (PC) by 30% LFS combined with the pozzolanic effect of Rice Husk Ash (RHA). Prismatic specimens were produced in a 1:6 mixture proportion (PC:sand) and subjected to mechanical tests and determination of the dynamic modulus of elasticity. The results indicated that the replacement provided a reduction in mechanical strength, however the presence of LFS+RHA was beneficial to improve water retention. These changes were caused by the bigger surface area of RHA grains and the higher CaO content, in relation to the reference mixture.
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页数：7
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