Lais Kohan

Dr. Lais Kohan

orcid

Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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9 October 2019 in SN Applied Sciences
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Journal Article
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LPLuciano Pinheiro
Luciano Pinheiro
LKLais Kohan
Lais Kohan
LOLarissa Oliveira-Duarte
Larissa Oliveira-Duarte
MGMaria Elisa de Paula Eduardo Garavello
Maria Elisa de Paula Eduardo Garavello
JBJulia Baruque-Ramos
Julia Baruque-Ramos

24 July 2019 in SN Applied Sciences
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Journal Article
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LOLarissa Oliveira-Duarte
Larissa Oliveira-Duarte
LKLais Kohan
Lais Kohan
LPLuciano Pinheiro
Luciano Pinheiro
HFHomero Fonseca Filho
Homero Fonseca Filho
JBJulia Baruque-Ramos
Julia Baruque-Ramos

22 July 2019 in SN Applied Sciences
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Journal Article
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LKLais Kohan
Lais Kohan
CMCristiane Reis Martins
Cristiane Reis Martins
LOLarissa Oliveira-Duarte
Larissa Oliveira-Duarte
LPLuciano Pinheiro
Luciano Pinheiro
JBJulia Baruque-Ramos
Julia Baruque-Ramos

26 April 2024 in Journal of Composite Materials
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Journal Article
Closed access
LKLais Kohan
Lais Kohan
CFCarlos Alexandre Fioroni
Carlos Alexandre Fioroni
Adriano Galvão Souza AzevedoAdriano Galvão Souza Azevedo
Adriano Galvão Souza Azevedo
BLBarbara Leonardi
Barbara Leonardi
JBJulia Baruque-Ramos
Julia Baruque-Ramos
Holmer Savastano JuniorHolmer Savastano Junior
Holmer Savastano Junior
In fabric-cement composites, the limited impregnation of cementitious matrix products due to thick and twisted yarns leads to premature failure due to poor bonding strength. In addition, cellulosic textile reinforcements have many challenges about durability, appearance of voids at mortar-fiber interface, and rise of microcracks. Textile performances were evaluated in different conditions: coated with micro-silica powder, pretreated, and without any treatment. This study also assessed how textile weave structure and yarn geometry configuration affect the interactions of two different jute textiles (Close Weave Jute Fabric – CJF and Open Weave Jute Fabric - OJT) when used as reinforcement in mortar matrix. Textile characterization and composite analysis (by four-point bending tests, SEM/EDS, and physical tests) were conducted to assess the different textile reinforcements, the mechanical behavior of produced composites, and visual and chemical compounds analysis of the interfacial transition zone between textile and mortar matrix after silica coating. Micro silica powder coating was deemed necessary to address limited impregnation and to avoid telescope pull-off. Weave structure determined the difference between jute fabrics to reinforce mortar matrix, being only OJF (larger interstices in the weave structure) with micro silica coating allowed a better matrix interaction and stood out from the other textiles and achieved the best specific energy of all samples, (4.28 ± 0.91) kJ.m-2. Calcium and silicon inside the yarn interstices and textile-matrix interface indicate the formation of strong bonds by calcium-silicate-hydrate products. The silica coating treatment enhanced formation of strong bonds, which demonstrated future promise for natural fiber application.

17 June 2022 in Materials Circular Economy
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Journal Article
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LFLuciano Fonseca-Pinheiro
Luciano Fonseca-Pinheiro
MGMaria Elisa de Paula Eduardo Garavello
Maria Elisa de Paula Eduardo Garavello
JBJulia Baruque-Ramos
Julia Baruque-Ramos
LKLais Kohan
Lais Kohan
LOLarissa Oliveira-Duarte
Larissa Oliveira-Duarte
Raul FangueiroRaul Fangueiro
Raul Fangueiro

19 April 2022 in Materials Circular Economy
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Journal Article
Closed access
PDF file
BCBarbara Contin
Barbara Contin
LKLais Kohan
Lais Kohan
LOLarissa Oliveira-Duarte
Larissa Oliveira-Duarte
PFPalloma Renny Fernandes
Palloma Renny Fernandes
RRRaysa Ruschel-Soares
Raysa Ruschel-Soares
JBJulia Baruque-Ramos
Julia Baruque-Ramos