Pore solution alkalinity of cement paste as determined by Cold Water Extraction

Autor: Maxime Ranger, Marianne Tange Hasholt, Ricardo Antonio Barbosa

Publikováno v: Cement, Vol 11, Iss , Pp 100055- (2023)

Cold Water Extraction (CWE) is a technique used to extract the pore solution of cementitious materials and to study its alkalinity. CWE can be used on paste, mortar or concrete, and requires only standard laboratory equipment. The method is not yet s

Externí odkaz: https://doaj.org/article/30c6f21d9e2e41f9a2c444edd8427b21

Influence of alkali-silica reaction and crack orientation on the uniaxial compressive strength of concrete cores from slab bridges

Autor: Linh Cao Hoang, Kurt Kielsgaard Hansen, Søren Gustenhoff Hansen, Ricardo Antonio Barbosa, Bent Grelk

Publikováno v: Antonio Barbosa, R, Gustenhoff Hansen, S, Hansen, K K, Hoang, L C & Grelk, B 2018, ' Influence of alkali-silica reaction and crack orientation on the uniaxial compressive strength of concrete cores from slab bridges ', Construction and Building Materials, vol. 176, pp. 440-451 . https://doi.org/10.1016/j.conbuildmat.2018.03.096

For a reliable structural analysis and risk assessment of concrete structures damaged by alkali-silica reaction (ASR), knowledge of the concrete compressive strength is essential.This comprehensive study investigates the residual compressive strength

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d6075f6f1751324c11a04af96d65c0e6
https://portal.findresearcher.sdu.dk/da/publications/97b2353f-5182-4f53-9cec-a6131288366c

Prestressing of reinforcing bars in concrete slabs due to concrete expansion induced by Alkali-Silica Reaction

Autor: Søren Gustenhoff Hansen, Ricardo Antonio Barbosa, Linh Cao Hoang

Publikováno v: Gustenhoff Hansen, S, Antonio Barbosa, R & Hoang, L C 2017, Prestressing of reinforcing bars in concrete slabs due to concrete expansion induced by Alkali-Silica Reaction . in fib Symposium 2016 : Performance-Based Approaches for Concrete Structures . Federation internationale du beton (fib), fib Symposium 2016, Cape Town, South Africa, 21/11/2016 .
Technical University of Denmark Orbit
Hansen, S G, Barbosa, R A & Hoang, L C 2016, Prestressing of reinforcing bars in concrete slabs due to concrete expansion induced by alkali-silica reaction . in fib Symposium 2016: Performance-based approaches for concrete structures : Proceedings . fib Symposium 2016, Cape Town, South Africa, 21/11/2016 .
University of Southern Denmark

Alkali-silica reactions (ASR) in concrete bridges have been a major concern worldwide for many decades. In Denmark, several bridges are severely damaged due to ASR and over 600 bridges have the potential to develop ASR in the future. The majority of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::42c5a05d7bda3dc2460af6f40214a47a
https://portal.findresearcher.sdu.dk/da/publications/56ed70c0-d7b0-4d6c-9724-79f1b429e959

Assesment of Severely ASR Damaged Bridges: From Diagnosis to Structural Effects

Autor: Ricardo Antonio Barbosa, Søren Gustenhoff Hansen, Kurt Kielsgaard Hansen, Linh Cao Hoang, Bent Grelk, Iben Maag

Publikováno v: Barbosa, R A, Gustenhoff Hansen, S, Hansen, K K, Hoang, L C, Grelk, B & Maag, I 2016, ' Assesment of Severely ASR Damaged Bridges: From Diagnosis to Structural Effects ', International Conference on Alkali Aggregate Reaction in Concrete, no. 15 .
Technical University of Denmark Orbit
University of Southern Denmark
Barbosa, R A, Hansen, S G, Hansen, K K, Hoang, L C, Grelk, B & Maag, I 2016, Assesment of Severely ASR Damaged Bridges: From Diagnosis to Structural Effects . in Proceedings of the 15th international conference on alkali-aggregate reaction in concrete (15th ICAAR) . 15th International Conference on Alkali-Aggregate Reaction in Concrete, São Paulo, Brazil, 03/07/2016 .

During the last decade an increasing number of bridges are becoming severely deteriorated due to alkali-silica reaction (ASR) in Denmark. Some bridges have already been demolished due to lack of knowledge on the residual load carrying capacity. The d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3b1be721ae3f4b0da3bba5f52645841d
https://portal.findresearcher.sdu.dk/da/publications/31a5a535-383e-439d-b52e-335a8c8a0003

Novel shear capacity testing of ASR damaged full scale concrete bridge

Autor: Søren Gustenhoff Hansen, Ricardo Antonio Barbosa, Jacob Wittrup Schmidt, Arne Henriksen

Publikováno v: Schmidt, J W, Hansen, S G, Barbosa, R A & Henriksen, A 2014, ' Novel shear capacity testing of ASR damaged full scale concrete bridge ', Engineering Structures . https://doi.org/10.1016/j.engstruct.2014.08.027

A large number of concrete bridges in Denmark have to undergo wide-ranging maintenance work to prevent deterioration due to aggressive Alkali Silica Reaction (ASR). This destructive mechanism results in extensive cracking which is believed to affect

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::579cba058478715bdedfffc9ae1b7cd3
https://vbn.aau.dk/da/publications/8694f077-9f36-4690-a8c3-b4f30a44f14e