Request PDF | Expansion due to alkali-silica reaction of ferronickel slag fine aggregate in OPC and blended cement mortars | About 14 tonnes of granulated ferronickel slag (FNS) is produced as a ...
Effect of Blending Alum Sludge and Ground Granulated Blast-Furnace Slag as Cement Replacement to Mitigate Alkali-Silica Reaction July 2023 DOI: 10.1007/978-981-99-3330-3_12
In the last few decades, the alkali–silica reaction (ASR) has been reported as one of the major concrete concerns regarding durability, leading to high maintenance …
Request PDF | Mitigating alkali-silica reaction in cement mortars through microbial carbonate precipitation technique | Alkali-Silica Reaction (ASR) is a major cause of durability reduction in ...
The all-solid-waste binder used in the test belongs to the alkali-activated binder (Fig. 1B), and the action mechanism is based on alkali activation of reactive silica-aluminium materials, and ...
DOI: 10.15781/T2953Q Corpus ID: 110576848; Alkali-Silica Reaction in Portland Cement Concrete: Testing Methods and Mitigation Alternatives @inproceedings{Touma2001AlkaliSilicaRI, title={Alkali-Silica Reaction in Portland Cement Concrete: Testing Methods and Mitigation Alternatives}, author={Wissam E. …
DOI: 10.1016/j.conbuildmat.2022.130155 Corpus ID: 255653208; Mitigating alkali-silica reaction in cement mortars through microbial carbonate precipitation technique @article{Balouchkhaneh2023MitigatingAR, title={Mitigating alkali-silica reaction in cement mortars through microbial carbonate precipitation technique}, author={Sahar …
Blast furnace slag is shown to be an active remover of alkalis and is especially effective in medium-alkali cements, where for equal alkali contents, the performance of 60% slag cement is ...
Alkali Silica Reaction (ASR) is a chemical reaction which affects both strength and durability of concrete. ASR occurs due to a chemical reaction between alkali oxides presents in the cement paste and reactive silica in aggregate. This reaction could lead to the volume expansion, cracking, loss of strength and potential failure of the concrete.
The occurrence of the alkali–silica reaction (ASR) in granite manufactured sand concrete reduces its durability and service life. However, the combination and …
Alkali-silica reaction (ASR) is one of the most recognized durability problems in concrete leading to premature deterioration of different types of concrete structures. Recent investigation into premature deterioration of airfield concrete pavements indicated the aggressive effects of alkali-acetate and alkali-formate based deicers on concrete …
Effective mitigation of alkali-silica reaction (ASR) is critical for producing durable concrete. The use of alumina-rich supplementary cementitious materials (SCMs) and chemical admixtures such as lithium …
Expansion due to alkali-silica reaction of ferronickel slag fine aggregate in OPC and blended cement mortars. 241454_241454.pdf (981.6Kb) Access Status. Open access. Authors. Saha, A. Sarker, Prabir. Date 2016. Type. ... Potential alkali silica reaction expansion mitigation of ferronickel slag aggregate by fly ash. Saha, A.; Sarker, Prabir …
pozzolan and other pozzolans for mitigating alkali-silica reaction (ASR) and resisting sulfate attack. First, a literature review was performed to find research on Class N pozzolan. Second, other state departments of transportation (DOTs) were contacted to determine ... of cement with Class F fly ash or 10-20% replacement with Class C fly ash ...
Alkali-silica reactivity in concrete effectively mitigated by cement substitution. •. Results verified via expansion, TGA, XRD, SEM, strength testing and thermodynamic …
Alkaline-activated materials (AAMs) have been developed as an alternative binder for cement in an effort to reduce the carbon footprint. However, due to the high alkaline contents in AAMs, these materials, particularly ground granulated blast-furnace slag (GGBS)-based AAM, may have a high potential of detrimental alkali-silica …
In addition to the benifits of LC3 that is similar to the other SCMs for ASR mitigation, the results showed that, in the initial stage of ASR, the calcium-rich phases such as C-S-H, C-A-S-H ...
Duchesne J., Bérubé M. A. The Effectiveness of Supplementary Cementing Materials in Suppressing Expansion Due to ASR: Another Look at the Reaction Mechanisms Part 2: Pore Solution Chemistry. Cement and Concrete Research, Vol. 24, No. 2, 1994, pp. 221–230.
The commercial ground granulated blast-furnace slag (GGBFS) used in this study was GGBFS 3000 (specify surface area: 3100 cm 2 /g), which conforms to Japanese industrial standard (JIS A6206). The chemical composition of the GGBFS is shown in Table 1.The activator used in this study was prepared by modifying a commercial sodium …
DOI: 10.1016/j.cemconcomp.2022.104532 Corpus ID: 248080158; Mitigation effect of lithium nitrate on the alkali-silica reaction in alkali-activated slag mortars @article{Wang2022MitigationEO, title={Mitigation effect of lithium nitrate on the alkali-silica reaction in alkali-activated slag mortars}, author={Wei Wang and Takafumi …
Ground granulated blast furnace slag (GGBFS) is generally less effective at mitigating ASR in comparison with low CaO fly ash and its availability is even more limited – the total world supply is only ~5% of cement clinker produced [26,27].
Cement and Concrete Research 35 (2005) 67 – 75 Mechanical approach in mitigating alkali-silica reaction C.K. Yi, C.P. Ostertag* Civil and Environmental Engineering Department, University of California, Berkeley, CA 94720, USA Received 9 July 2003; accepted 20 February 2004 Abstract The effect of steel microfibers (SMF) on alkali-silica ...
The effect of combining brass-coated steel microfiber and ground-granulated blast-furnace slag (GGBS) on the mitigation of deleterious expansion due to alkali-silica reaction (ASR) was investigated in this research. A potentially reactive basaltic aggregate was chosen as a reactive material. Two series of specimens containing different …
The first task is to increase the low degree of reaction of MK in cement systems, especially at high levels of cement substitution. The authors' recent work suggests that a coupled substitution of cement with MK and bentonite can generate synergistic effects to enhance hydration of cement and increase reaction degree of MK (Wei and …
The alkali–silica reaction (ASR) is a severe durability issue in cement-based materials. Although using calcium-rich supplementary cementitious materials (SCMs) such as ground granulated blast-furnace slag (GGBS) is beneficial for improving mechanical performance, it can lead to critical ASR-induced damage, primarily when high-reactive …
DOI: 10.1016/J.CEMCONRES.2018.03.002 Corpus ID: 139856358; Alkali-silica reaction in waterglass-activated slag mortars incorporating fly ash and metakaolin @article{Shi2018AlkalisilicaRI, title={Alkali-silica reaction in waterglass-activated slag mortars incorporating fly ash and metakaolin}, author={Zhenguo Shi and Caijun Shi and …
The purpose of this study was to determine the ability of high CaO and/or high-alkali (Na 2 O eq) fly ashes to control alkali-silica reaction (ASR) in mortar bars.The research focused on using an industry standard test method to validate if the chemical index characterization technique common in the literature could be used to accurately predict …
Mitigation of alkali-silica reaction by microbially induced CaCO 3 protective layer on aggregates. Construction and Building Materials, Volume 328, 2022, Article 127065 ... Effects of TEA on rheological property and hydration performance of lithium slag-cement composite binder. Construction and Building Materials, Volume 318, 2022, Article 125757.
The ASR needs several components to take place: Adequate amounts of alkali (provided by cement), reactive silica aggregate, and moisture must be present for …
replacement of cement by 30% of blast-furnace slag can mitigate the alkali-aggregate reaction in high-strength concrete as a result of the alkali-reducing effect of GGBS.
For alkali-activated slag cement (AAC), an environmentally-friendly material, high-alkalinity activators are normally utilized for activation, which can lead to possible concrete degradation owing to alkali-silica reaction (ASR) when alkali-active aggregates were used. This study explored the effectiveness of lightweight aggregates in mitigating …
Ferronickel slag (FNS) with dense and hard nature exhibits great potential to be utilized as recycled aggregate in concrete production. This study investigated the alkali-silica reaction (ASR) and the pessimum proportion of FNS fine aggregate in Portland cement (PC) and alkali-activated ground granulated bast furnace slag (AAS) mortars as …
Ground granulated blast furnace slag (GGBFS) is generally less effective at mitigating ASR in comparison with low CaO fly ash and its availability is even more limited – the total world supply is only ~5% of cement clinker produced [26,27]. Any new chemical admixture developed for ASR mitigation should possess certain essential characteristics.
The alkalisilica reaction (ASR)- in concrete is a significant issuein civil engineering, affecting concrete structures, resulting in expensive worldwide maintenance and reconstruction.
DOI: 10.1016/j.cemconres.2020.106176 Corpus ID: 224926050; Mitigation of alkali-silica reaction by limestone calcined clay cement (LC3) @article{Nguyen2020MitigationOA, title={Mitigation of alkali-silica reaction by limestone calcined clay cement (LC3)}, author={Quang Dieu Nguyen and Taehwan Kim and Arnaud Castel}, journal={Cement …
In this study, the mitigation effect of lithium nitrate on the ASR in an AAM system was investigated for the first time. The results indicate that lithium nitrate is not …
AbstractThis study evaluates the effect of limestone mineral addition in cement on the efficacy of supplementary cementitious materials (SCMs) in mitigating alkali-silica reaction (ASR) using the accelerated mortar bar test (AMBT). Mortars with and ...
