Effect of the inherent alkalis of alkali activated slag on the risk of alkali silica reaction

Tänzer, Ricarda; Yu, Jin; Stephan, Dietmar

doi:10.1016/j.cemconres.2017.04.009

Cited by 43 publications

(15 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, the results of testing with a broad range of binder-aggregate combinations have shown that alkali-silica reactions do not appear to be particularly problematic in AAMs with aggregates of 'normal' reactivity [233]. It is possible to induce alkali-silica reaction expansion under accelerated conditions and with the use of a reactive aggregate [234,235], but in the majority of cases, AAM mortars show less expansion than plain PC mortars with the same reactive aggregates [234,[236][237][238]. The relatively high Al concentration in the pore solution of AAMs, and in some cases also the lack or near-absence of dissolved Ca, appears to be important in restricting alkali-silica damage [234,237,239].…”

Section: Durabilitymentioning

confidence: 99%

Recent progress in low-carbon binders

Shi

Provis

2019

Cement and Concrete Research

493

131

View full text Add to dashboard Cite

The development of low-carbon binders has been recognized as a means of reducing the carbon footprint of the Portland cement industry, in response to growing global concerns over CO2 emissions from the construction sector. This paper reviews recent progress in the three most attractive low-carbon binders: alkali-activated, carbonate, and belite-ye'elimite-based binders. Alkali-activated binders/materials were reviewed at the past two ICCC congresses, so this paper focuses on some key developments of alkali-activated binders/materials since the last keynote paper was published in 2015. Recent progress on carbonate and belite-ye'elimite-based binders are also reviewed and discussed, as they are attracting more and more attention as essential alternative low-carbon cementitious materials. These classes of binders have a clear role to play in providing a sustainable future for global construction, as part of the available toolkit of cements.

show abstract

Section: Durabilitymentioning

confidence: 99%

Recent progress in low-carbon binders

Shi

Provis

2019

Cement and Concrete Research

493

131

View full text Add to dashboard Cite

show abstract

“…AAS cement has many advantages including high strength and excellent resistance against acid [5], alkaline and chemical attacks [6], lower CO2 emission and energy consumption in comparing to ordinary Portland cement (PC) [7]. Despite their favourable performance, AAS material also faces many challenges before its application, such as extensive shrinkage and cracking [8,9], high risk of efflorescence [10], high susceptibility to alkali-silica reaction [11], and unclear performance in chloridebearing environments [12]. Perhaps one of the most significant conundrums impeding the implementation of AAS concrete is their long-term durability.…”

Section: Introductionmentioning

confidence: 99%

The long-term failure mechanisms of alkali-activated slag mortar exposed to wet-dry cycles of sodium sulphate

Yang

et al. 2021

Cement and Concrete Composites

View full text Add to dashboard Cite

“…The results showed that the degree of swelling was consistent with the alkali reactivity of aggregate, from high to low as the following: perlite, andesite, basalt, olivine, and quartz sand. Also, Tänzer 95 et al…”

Section: Alkali-aggregate Reactionmentioning

confidence: 99%

A Review on Durability of Alkali-activated System from Sustainable Construction Materials to Infrastructures

Li¹,

Tang²,

Tam³

et al. 2020

ES Mater.Manuf.

View full text Add to dashboard Cite

With growing concerns for greenhouse gas emissions, alkali-activated materials (AAMs) have received significant attention due to the benefit of low carbon footprint. In the process of promoting large-scale and commercialized applications of AAMs, one of the most significant concerns is the long-term durability. This work presents a critical review on the durability performance of alkali-activated system. At the material level, this work reviews factors influencing the mass transport properties of AAMs, and effects of a number of factors such as chemical activators, raw materials, curing regimes, and exposure environments on the durability of AAMs subjected to both physically and chemically induced deterioration. At the structure level, the durability performance of structures made from AAMs, including beam, slab, box culvert, and repairing materials and protection coating under extreme conditions are reviewed. The review indicates that AAMs have potentials to manufacture durable materials by appropriate selection of raw materials, chemical activators and optimization of mixing design. Furthermore, perspectives are proposed for the further study on the durability of AAMs at both material and structure levels. The related results are of interest to the research community as well as to the stakeholders of AAMs industries who seek sustainability in their products.

show abstract

Effect of the inherent alkalis of alkali activated slag on the risk of alkali silica reaction

Cited by 43 publications

References 21 publications

Recent progress in low-carbon binders

Recent progress in low-carbon binders

The long-term failure mechanisms of alkali-activated slag mortar exposed to wet-dry cycles of sodium sulphate

A Review on Durability of Alkali-activated System from Sustainable Construction Materials to Infrastructures

Contact Info

Product

Resources

About