Utilization of Fabric Formwork for Improving the Durability of Concrete from Supersulfated Cement

Ioannou, Socrates; Badr, Atef; Kostova, Kaloyana; Paine, Kevin; Ibell, Tim

doi:10.4028/www.scientific.net/kem.711.615

Cited by 10 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…He showed not only the weight of this slab could be reduced by about 50% but also, the embodied carbon footprint of the entire building could be decreased by about 50%. Ioannou et al (2016) studied on the durability of fabric formed super sulphated concrete. The study was included a comparison of water absorption rate, chloride resistance, carbonation resistance and pH values.…”

Section: Form Findingmentioning

confidence: 99%

A state of the art on the structural performance of fabric formwork systems

Tahmoorian¹,

Nemati²,

Soleimani³

2020

10.5267/j.esm

View full text Add to dashboard Cite

Fabric Formworks which are made using textile sheets such as Polyolefin, Polyesters/Polyethylene Terephthalate, nylon and Polypropylene are being used instead of conventional formworks in the construction industry. This article summarises significant studies and provides an updated review of references on the structural performance of fabric formworks over the last decade. The survey showed that they could be categorised into seven themes; namely, "Feasibility studies and manufacturing methods of complex structural elements"; "Finite element modelling, structural optimizing and form-finding themes"; "Pneumatic / Vacuumatic formwork theme"; "Durability, sustainability, efficiency and quality improvement"; "Cable-net fabric formwork theme"; "Stayin-place structural formworks theme"; and "Review papers". These categories comprise about 25%, 17%, 15%, 15%, 10%, 6% and 6% of related studies respectively.

show abstract

Section: Form Findingmentioning

confidence: 99%

A state of the art on the structural performance of fabric formwork systems

Tahmoorian¹,

Nemati²,

Soleimani³

2020

10.5267/j.esm

View full text Add to dashboard Cite

show abstract

“…Nesse sentido, Ioannou [24], que também encontrou baixas resistências à carbonatação em seu estudo, destaca que a questão da baixa alcalinidade das matrizes se torna mais relevante do que outros fatores, como a relação água/cimento, no que tange a carbonatação em matrizes de cimento supersulfatado. Uma alternativa que foi estudada para reduzir essa deficiência foi o emprego de formas pré fabricadas que promovem uma melhor qualidade superficial do concreto [28]. Conforme apresentado na Figura 3, foi possível uma redução aproximadamente de 35% da profundidade de carbonatação.…”

Section: Carbonataçãounclassified

“…Figura 3: Profundidade de carbonatação em função do tipo de forma adotada (Adaptado e traduzido) [28].…”

Section: Carbonataçãounclassified

Durabilidade de concretos com cimento supersulfatado: uma revisão da literatura

Pinto¹,

Medeiros-Junior²,

Luz³

2018

Simpósio Paranaense De Patologia Das Construções

View full text Add to dashboard Cite

Resumo: A escória de alto-forno é um coproduto da indústria de ferro gusa que inicialmente não possui capacidade aglomerante mas, ao ser associada à outros materiais que promovam um alto pH da mistura, pode ser capaz de atuar como um material aglomerante. Atualmente, a principal destinação da escória de alto forno é a industria cimentícia para a produção de cimento Portland. Porém, é possível também o seu emprego na produção de cimentos com baixo ou nenhum teor de clínquer, como é o caso do cimento supersulfatado (CSS). O cimento supersulfatado em geral apresenta a seguinte composição: 80 a 90% de escória de alto forno, 10 a 20% de sulfato de cálcio e 1 a 5% de ativador alcalino. Após um período de escassez de pesquisas, o cimento supersulfatado ressurge no cenário científico como uma promissora alternativa como material aglomerante de baixo impacto ambiental em substituição ao cimento Portland. Dentre os principais aspectos que demandam estudos, quando se trata de novos materiais, destaca-se o desempenho à durabilidade. Diante desse contexto, este artigo tem como objetivo apresentar uma revisão dos principais estudos acerca da durabilidade de concretos produzidos com cimento supersulfatado. Palavras-chave: Escória de alto forno, Cimento supersulfatado, Durabilidade, Cimento de baixo impacto ambiental.Abstract: Blast furnace slag is a co-product from iron industry and has no binding properties. However, if it combined with other materials that promote a high pH of the mixture, it may be able binding capacity. Nowadays, the main destination of blast furnace slag is the cement industry for Portland cement production. However, it is also possible to use it in the production of no-clinker cements such as supersulfated cement (SSC). The supersulfated cement shows the composition: 80 to 90% blast furnace slag, 10 to 20% calcium sulfate and 1 to 5% alkaline activator. After a shortage of research, supersulfated cement return in the science landscape as a promising alternative as an environmentally friendly cement replacing the Portland cement. One of the main aspects that require studies, when it comes to new materials, is the durability performance. In this context, this article aims to present a review of the main studies on the durability of concrete produced with supersulfated cement.

show abstract

“…The porosity of fabric materials has proven to be another advantage of the construction method due to the loss of excessive surface water during construction providing enhanced durability of concrete (Orr, 2013;Lee, 2012;Ioannou et al, 2016). Despite all of the potential advantages, the design of flexibly-formed structural elements presents a major challenge to the industrial application of fabric formwork.…”

mentioning

confidence: 99%

Form-finding approach for flexibly formed concrete elements

Kostova

Ibell

Darby

et al. 2019

Proceedings of the Institution of Civil Engineers - Engineering

Self Cite

View full text Add to dashboard Cite

There is no reason why concrete elements should be prismatic. Concrete is mouldable and can be cast in efficient forms which follow the stresses varying along the length of a concrete element. One option to achieve this is to use fabric as flexible formwork. Fabric deforms under the hydrostatic pressure exerted by wet concrete during construction, creating the shape of hardened concrete. The final shape needs to be known in advance to be able to perform the analysis and design of structural elements. This paper presents a form-finding approach capable of predicting the shape in cross-section of flexibly formed concrete elements. The approach is shown to predict geometry appropriately, based on the results of an experimental investigation, particularly when applied to complex shapes. The influence of construction tolerances, practical aspects and limitations of the approach are also discussed.

show abstract

Utilization of Fabric Formwork for Improving the Durability of Concrete from Supersulfated Cement

Cited by 10 publications

References 9 publications

A state of the art on the structural performance of fabric formwork systems

A state of the art on the structural performance of fabric formwork systems

Durabilidade de concretos com cimento supersulfatado: uma revisão da literatura

Form-finding approach for flexibly formed concrete elements

Contact Info

Product

Resources

About