Vigas de concreto reparadas com argamassa geopolimérica
RESUMO Este trabalho avaliou a eficácia de uma argamassa geopolimérica como material para recuperação de vigas de concreto convencional, objetivando restaurar o caráter monolítico e a capacidade portante inicial da estrutura reparada. Para isso, vigas de concreto reabilitadas com argamassa geopolimé...
Saved in:
Published in | Matéria Vol. 23; no. 3 |
---|---|
Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
18.10.2018
|
Online Access | Get full text |
Cover
Loading…
Abstract | RESUMO Este trabalho avaliou a eficácia de uma argamassa geopolimérica como material para recuperação de vigas de concreto convencional, objetivando restaurar o caráter monolítico e a capacidade portante inicial da estrutura reparada. Para isso, vigas de concreto reabilitadas com argamassa geopolimérica e com argamassa de reparo comercial foram analisadas e comparadas com vigas de referência sem reparo, por meio de ensaios de resistência à tração na flexão e de resistência de aderência ao cisalhamento na flexão. Os resultados mostram que as maiores deflexões ocorreram para os corpos de prova recuperados com argamassa geopolimérica (quando comparadas às vigas de referência de concreto monolítico) sem, no entanto, haver aumento considerável na carga de ruptura, justificado pelo baixo módulo de elasticidade longitudinal do material de reparo. As vigas recuperadas com argamassa geopolimérica apresentaram comportamento de ruptura muito semelhante ao das vigas de referência, ou seja, comportaram-se monoliticamente, ao contrário das recuperadas com argamassa comercial, que apresentaram descolamento da interface substrato/reparo. Os resultados sugerem que a argamassa geopolimérica possui potencial para ser utilizada como material alternativo em reparo de vigas de concreto convencional devido, principalmente, à aderência satisfatória ao concreto do substrato, à carga de ruptura próxima à da viga monolítica de referência e à melhor qualidade em relação à argamassa comercial.
ABSTRACT This work evaluated the effectiveness of a geopolymer mortar as a material for the repair of conventional concrete beams, objectifying to restore the monolithic character and the initial load bearing capacity of the repaired structure. For this, rehabilitated concrete beams with geopolymer mortar and commercial repair mortar were analyzed and compared with reference beams without repair, by means of tests of tensile strength in the flexion and of strengh of flexural shear adhesion. The results show that the greatest deflections occurred for the specimens recovered with geopolymer mortar (when compared to the reference beams of monolithic concrete) without, however, a considerable increase in the rupture load, justified by the low longitudinal modulus of elasticity of the repair material. The beams recovered with geopolymer mortar presented a very similar rupture behavior to the reference beams, that is, they behaved monolithically, unlike those recovered with commercial mortar, which showed substrate/repair interface displacement. The results indicate that the geopolymeric mortar has potential to be used as an alternative material for repairing conventional concrete beams due mainly to the satisfactory adhesion to concrete of the substrate, to the bursting load close to that of the reference monolith beam and to the best quality in relation to commercial mortar. |
---|---|
AbstractList | RESUMO Este trabalho avaliou a eficácia de uma argamassa geopolimérica como material para recuperação de vigas de concreto convencional, objetivando restaurar o caráter monolítico e a capacidade portante inicial da estrutura reparada. Para isso, vigas de concreto reabilitadas com argamassa geopolimérica e com argamassa de reparo comercial foram analisadas e comparadas com vigas de referência sem reparo, por meio de ensaios de resistência à tração na flexão e de resistência de aderência ao cisalhamento na flexão. Os resultados mostram que as maiores deflexões ocorreram para os corpos de prova recuperados com argamassa geopolimérica (quando comparadas às vigas de referência de concreto monolítico) sem, no entanto, haver aumento considerável na carga de ruptura, justificado pelo baixo módulo de elasticidade longitudinal do material de reparo. As vigas recuperadas com argamassa geopolimérica apresentaram comportamento de ruptura muito semelhante ao das vigas de referência, ou seja, comportaram-se monoliticamente, ao contrário das recuperadas com argamassa comercial, que apresentaram descolamento da interface substrato/reparo. Os resultados sugerem que a argamassa geopolimérica possui potencial para ser utilizada como material alternativo em reparo de vigas de concreto convencional devido, principalmente, à aderência satisfatória ao concreto do substrato, à carga de ruptura próxima à da viga monolítica de referência e à melhor qualidade em relação à argamassa comercial.
ABSTRACT This work evaluated the effectiveness of a geopolymer mortar as a material for the repair of conventional concrete beams, objectifying to restore the monolithic character and the initial load bearing capacity of the repaired structure. For this, rehabilitated concrete beams with geopolymer mortar and commercial repair mortar were analyzed and compared with reference beams without repair, by means of tests of tensile strength in the flexion and of strengh of flexural shear adhesion. The results show that the greatest deflections occurred for the specimens recovered with geopolymer mortar (when compared to the reference beams of monolithic concrete) without, however, a considerable increase in the rupture load, justified by the low longitudinal modulus of elasticity of the repair material. The beams recovered with geopolymer mortar presented a very similar rupture behavior to the reference beams, that is, they behaved monolithically, unlike those recovered with commercial mortar, which showed substrate/repair interface displacement. The results indicate that the geopolymeric mortar has potential to be used as an alternative material for repairing conventional concrete beams due mainly to the satisfactory adhesion to concrete of the substrate, to the bursting load close to that of the reference monolith beam and to the best quality in relation to commercial mortar. |
Author | Dias, Dylmar Penteado Rocha, Thais da Silva França, Fernando Cesar Coelho Garcia, Sergio Luiz González |
Author_xml | – sequence: 1 givenname: Fernando Cesar Coelho surname: França fullname: França, Fernando Cesar Coelho organization: Universidade Estadual do Norte Fluminense Darcy Ribeiro, Brasil – sequence: 2 givenname: Dylmar Penteado surname: Dias fullname: Dias, Dylmar Penteado organization: Universidade Estadual do Norte Fluminense Darcy Ribeiro, Brasil – sequence: 3 givenname: Sergio Luiz González surname: Garcia fullname: Garcia, Sergio Luiz González organization: Universidade Estadual do Norte Fluminense Darcy Ribeiro, Brasil – sequence: 4 givenname: Thais da Silva surname: Rocha fullname: Rocha, Thais da Silva organization: Universidade Estadual do Norte Fluminense Darcy Ribeiro, Brasil |
BookMark | eNpN0EtKxEAQBuBGRnBm9AzmAhmrOv3KUgZfMOBG3TaVfoTIJB263Xgkz-HFdFRkVvVTP_yLb8UWU5oCY5cIG5QtXBWUqGsNWnFAAwDNBiQ3J2z5XyyO8hlblfIKoBrBYcnMy9BTqXyoXJpcDm-pymGmTP7769JYUe5ppFKo6kOa034YPz_y4OicnUbal3Dxd9fs-fbmaXtf7x7vHrbXu9ohcFNjJ0znNIZGRxWi8E56FCF4bJXSkaLhAr0QEaTXHUdDvjUqKOdbRZJcs2b6d9flVEoO0c55GCm_WwR7ALA_APYYwB4Ami9nslFq |
CitedBy_id | crossref_primary_10_1016_j_conbuildmat_2019_05_035 |
Cites_doi | 10.1016/j.conbuildmat.2016.07.058 10.1016/j.matlet.2015.09.016 10.1016/j.colsurfa.2006.05.044 10.1590/S1517-70762009000300015 10.1016/j.conbuildmat.2016.09.144 10.1016/j.ceramint.2016.07.139 10.1016/j.engfracmech.2016.04.040 |
ContentType | Journal Article |
DBID | AAYXX CITATION |
DOI | 10.1590/s1517-707620180003.0528 |
DatabaseName | CrossRef |
DatabaseTitle | CrossRef |
DatabaseTitleList | CrossRef |
DeliveryMethod | fulltext_linktorsrc |
Discipline | Engineering |
EISSN | 1517-7076 |
ExternalDocumentID | 10_1590_s1517_707620180003_0528 |
GroupedDBID | 123 2WC 5VS AAYXX ABXHO ADBBV ALMA_UNASSIGNED_HOLDINGS APOWU BCNDV CITATION E3Z GROUPED_DOAJ KQ8 M~E OK1 RSC SCD |
ID | FETCH-LOGICAL-c1028-1b48bc71e37f6ef4dc5d14eed19667faf8241d44f05d7b218ad986e6cd96a5ac3 |
ISSN | 1517-7076 |
IngestDate | Fri Aug 23 02:42:34 EDT 2024 |
IsPeerReviewed | false |
IsScholarly | true |
Issue | 3 |
Language | English |
LinkModel | OpenURL |
MergedId | FETCHMERGED-LOGICAL-c1028-1b48bc71e37f6ef4dc5d14eed19667faf8241d44f05d7b218ad986e6cd96a5ac3 |
ParticipantIDs | crossref_primary_10_1590_s1517_707620180003_0528 |
PublicationCentury | 2000 |
PublicationDate | 2018-10-18 |
PublicationDateYYYYMMDD | 2018-10-18 |
PublicationDate_xml | – month: 10 year: 2018 text: 2018-10-18 day: 18 |
PublicationDecade | 2010 |
PublicationTitle | Matéria |
PublicationYear | 2018 |
References | GOLIATH K. B (ref15) 2017 MAZZA S. C. (ref17) 2010 (ref22) 2010 SATOH A (ref7) 2016; 167 (ref12) 1991; 88 (ref20) 2008 MEHTA P. K (ref25) 2008 PEREIRA D. S. (ref9) 2003 DUAN P (ref13) 2016; 124 (ref19) 2011 MAURI J (ref4) 2009; 14 COSTA E. B. C. (ref8) 2014 ELIGEHAUSEN R (ref11) 1983 ROCHA T. S. (ref5) 2017 (ref23) 2010 (ref24) 2001 SOARES J. C. (ref6) 2006 SHAO N (ref2) 2015; 161 RANJBAR N (ref3) 2016; 127 SMIDERLE A. P. R. S. (ref14) 2016 FUSCO P. B. (ref10) 1995 (ref18) 2007 DIAS D. P. (ref16) 2001 YUAN J (ref26) 2016; 42 DUXSON P (ref27) 2007; 292 (ref21) 1992 SOUZA V. C (ref1) 1998 |
References_xml | – year: 2003 ident: ref9 contributor: fullname: PEREIRA D. S. – year: 2001 ident: ref16 contributor: fullname: DIAS D. P. – year: 2017 ident: ref5 contributor: fullname: ROCHA T. S. – year: 1995 ident: ref10 contributor: fullname: FUSCO P. B. – volume: 124 start-page: 69 year: 2016 ident: ref13 article-title: A novel waterproof, fast setting and high early strength repair material derived from metakaolin geopolymer publication-title: Construction and Building Materials doi: 10.1016/j.conbuildmat.2016.07.058 contributor: fullname: DUAN P – year: 1992 ident: ref21 – year: 2010 ident: ref17 contributor: fullname: MAZZA S. C. – year: 2017 ident: ref15 contributor: fullname: GOLIATH K. B – volume: 161 start-page: 451 year: 2015 ident: ref2 article-title: Fabrication of hollow microspheres filled fly ash geopolymer composites with excellent strength and low density publication-title: Materials Letters doi: 10.1016/j.matlet.2015.09.016 contributor: fullname: SHAO N – year: 2014 ident: ref8 contributor: fullname: COSTA E. B. C. – year: 2006 ident: ref6 contributor: fullname: SOARES J. C. – volume: 292 start-page: 8 issue: 1 year: 2007 ident: ref27 article-title: The effect of alkali and Si/Al ratio on the development of mechanical properties of metakaolin-based geopolymers publication-title: Colloids Surface A doi: 10.1016/j.colsurfa.2006.05.044 contributor: fullname: DUXSON P – year: 2010 ident: ref23 – year: 2016 ident: ref14 contributor: fullname: SMIDERLE A. P. R. S. – volume-title: Local bond-slip relationship of deformed bars under generalized excitations year: 1983 ident: ref11 contributor: fullname: ELIGEHAUSEN R – volume-title: CIMENTO PORTLAND year: 2001 ident: ref24 – volume: 14 start-page: 1039 issue: 3 year: 2009 ident: ref4 article-title: Argamassa geopolimérica: estudo da degradação por sulfato de sódio e ácido sulfúrico publication-title: Revista Matéria doi: 10.1590/S1517-70762009000300015 contributor: fullname: MAURI J – year: 2008 ident: ref25 contributor: fullname: MEHTA P. K – year: 1998 ident: ref1 contributor: fullname: SOUZA V. C – volume: 88 start-page: 669 issue: 6 year: 1991 ident: ref12 article-title: Abstract of: State of the art report: Bond Under Cyclic Loads publication-title: ACI Materials Journal – year: 2010 ident: ref22 – volume: 127 start-page: 274 year: 2016 ident: ref3 article-title: Fracture evaluation of multi-layered precast reinforced geopolymer concrete composite beams by incorporating acoustic emission into mechanical analysis publication-title: Construction and Building Materials doi: 10.1016/j.conbuildmat.2016.09.144 contributor: fullname: RANJBAR N – year: 2011 ident: ref19 – year: 2008 ident: ref20 – volume: 42 start-page: 1618 issue: 14 year: 2016 ident: ref26 article-title: Effect of curing temperature and SiO2/K2O molar ratio on the performance of metakaolin-based geopolymers publication-title: Ceramics International doi: 10.1016/j.ceramint.2016.07.139 contributor: fullname: YUAN J – year: 2007 ident: ref18 – volume: 167 start-page: 84 year: 2016 ident: ref7 article-title: FEM simulation of tension struts on adhesion performance. of mortar– repair interface publication-title: Engineering Fracture Mechanics doi: 10.1016/j.engfracmech.2016.04.040 contributor: fullname: SATOH A |
SSID | ssj0063420 |
Score | 2.110821 |
Snippet | RESUMO Este trabalho avaliou a eficácia de uma argamassa geopolimérica como material para recuperação de vigas de concreto convencional, objetivando restaurar... |
SourceID | crossref |
SourceType | Aggregation Database |
Title | Vigas de concreto reparadas com argamassa geopolimérica |
Volume | 23 |
hasFullText | 1 |
inHoldings | 1 |
isFullTextHit | |
isPrint | |
link | http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnV3LbtNAFB2FsoEFojxEKVResLNc_JiHvawCbVUVhESKurPmmVpKbJQmSM0f9FP4Dn6MO-Ox61ZBUDaWNbbvxLnHd87M3AdC72z0vwEoRFwQEmGW0kiwXEcC5yRnhhii7HrHp8_0-AyfnJPz0eh64LW0Wop9ud4YV_I_WoU20KuNkr2HZnuh0ADnoF84gobh-E86_lZN-WWonMM5sD-gkQttc3kraIX-QlvEdg7smIdTbYshVPN2X3zROeh0pZxs-orxGFhl63Ts40F47W5njl_6BecmHOtLvgA7omcXTU-DqzYu7MPVbA4Xv9hEn1z1l49swSInBUzTtGrC01W1Do-aeu06SGZ6fbPxI9stqMkFr-DdePi1mv3gw8WJxGWKvW1PYRBkMfPZrje0eSPcBh17sGUbbTspYhfr3D1u-7NTuv2Y-PjyW9m074xyve-hnfWAqNIJKoeCSivoAXqYsoKwbnbeDuo0wy7DZ9-5dxUEQe__8IsGRGfAWCZP0RM_1QgOWtxso5Gun6HHgwSUz1HuEBQoHXQICnoEQdM86BEUdAj69dOi5wU6O_w4GR9HvpZGJC2FjBL4-IRkic6YodpgJYlKMBAksMCUGW5yoHIKYxPDxymA93FV5FRTqQrKCZfZS7RVN7V-hQJJsRSsiIvUpo8UGWdEZRmMmXFmUpnyHRR3L15-b1OmlH_501_f_5Fd9OgGcG_Q1nKx0m-BHy7FntPcb-pHWj4 |
link.rule.ids | 315,786,790,870,27957,27958 |
linkProvider | Directory of Open Access Journals |
openUrl | ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Vigas+de+concreto+reparadas+com+argamassa+geopolim%C3%A9rica&rft.jtitle=Mate%CC%81ria&rft.au=Fran%C3%A7a%2C+Fernando+Cesar+Coelho&rft.au=Dias%2C+Dylmar+Penteado&rft.au=Garcia%2C+Sergio+Luiz+Gonz%C3%A1lez&rft.au=Rocha%2C+Thais+da+Silva&rft.date=2018-10-18&rft.issn=1517-7076&rft.eissn=1517-7076&rft.volume=23&rft.issue=3&rft_id=info:doi/10.1590%2Fs1517-707620180003.0528&rft.externalDBID=n%2Fa&rft.externalDocID=10_1590_s1517_707620180003_0528 |
thumbnail_l | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=1517-7076&client=summon |
thumbnail_m | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=1517-7076&client=summon |
thumbnail_s | http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=1517-7076&client=summon |