Long-term behaviors of concrete under low-concentration sulfate attack subjected to natural variation of environmental climate conditions
Sign Up to like & getrecommendations! Published in 2019 at "Cement and Concrete Research"
DOI: 10.1016/j.cemconres.2018.11.017
Abstract: Abstract Accelerated laboratory tests on resistance of concrete exposed to sulfate attack have generally been conducted in high-concentration sulfate solutions or under drastic drying-wetting cycle conditions. However, these accelerated regimes radically alter the nature of… read more here.
Keywords: drying wetting; sulfate attack; exposure; sulfate ... See more keywords
Mechanism of sulfate attack on alkali-activated slag: The role of activator composition
Sign Up to like & getrecommendations! Published in 2019 at "Cement and Concrete Research"
DOI: 10.1016/j.cemconres.2019.105868
Abstract: Abstract In this work, the degradation mechanisms of alkali-activated slag (AAS), prepared with various activator compositions, exposed to 5% Na2SO4 and MgSO4 solutions are studied. The results show that upon Na2SO4 attack, little ettringite formation… read more here.
Keywords: attack; activated slag; activator; sulfate attack ... See more keywords
Degradation mechanisms of cast-in-situ concrete subjected to internal-external combined sulfate attack
Sign Up to like & getrecommendations! Published in 2020 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2020.118683
Abstract: Abstract In this paper, an experimental study was conducted to reveal the degradation mechanisms of cast-in-situ concrete induced by internal-external combined sulfate attack. The internal sulfate attack of concrete was conducted by adding extra sodium… read more here.
Keywords: attack; degradation; sulfate attack; concrete ... See more keywords
Effect of external sulfate attack on the mechanical behavior of cemented paste backfill
Sign Up to like & getrecommendations! Published in 2020 at "Construction and Building Materials"
DOI: 10.1016/j.conbuildmat.2020.120968
Abstract: Abstract The sulfate-rich mine water in underground metal mines causes external sulfate attack on cemented paste backfill (CPB) and affects its mechanical stability. To simulate the effect of mine water environment in metal mines, CPB… read more here.
Keywords: effect; cemented paste; sulfate; external sulfate ... See more keywords
Effect of physical and chemical sulfate attack on performance degradation of concrete under different conditions
Sign Up to like & getrecommendations! Published in 2020 at "Chemical Physics Letters"
DOI: 10.1016/j.cplett.2020.137254
Abstract: Abstract Effects of erosion form, erosion age and sulfate solution concentration on compressive strength, micro structure and erosion products of concrete were investigated. The phase composition, micro structure, morphology, pore characteristic of concrete were studied… read more here.
Keywords: sulfate; erosion; sulfate attack; chemical ... See more keywords
Physical sulfate attack on concrete lining–A field case analysis
Sign Up to like & getrecommendations! Published in 2017 at "Case Studies in Construction Materials"
DOI: 10.1016/j.cscm.2017.04.002
Abstract: Abstract In the tunnels of the Cheng-Kun Railway in China, concrete failure can usually be observed from the effect of sulfates. A field investigation was conducted to analyze the concrete damage mechanism by means of… read more here.
Keywords: concrete lining; field; sulfate attack; case ... See more keywords
Reliability assessment of concrete under external sulfate attack
Sign Up to like & getrecommendations! Published in 2021 at "Case Studies in Construction Materials"
DOI: 10.1016/j.cscm.2021.e00690
Abstract: Abstract The variability in characteristics of concrete material, such as pore size and chemical composition, has significant impact on the long-term performance of concrete structures under sulfate attack. This paper presents a reliability-based numerical model… read more here.
Keywords: reliability index; sulfate; time; sulfate attack ... See more keywords
Deterioration of cement asphalt pastes with polymer latexes and expansive agent under sulfate attack and wetting-drying cycles
Sign Up to like & getrecommendations! Published in 2020 at "Engineering Failure Analysis"
DOI: 10.1016/j.engfailanal.2019.104252
Abstract: Abstract The deterioration mechanism of cement asphalt (CA) pastes used in CRTS II slab track under sulfate attack and wetting-drying cycles was investigated in this study. Two types of polymer latexes and one expansive agent… read more here.
Keywords: sulfate attack; corrosion; expansive agent; polymer latexes ... See more keywords
Durability and Abrasion Resistance of Innovative Recycled Pervious Concrete with Recycled Coarse Aggregate of Different Quality under Sulfate Attack
Sign Up to like & getrecommendations! Published in 2021 at "Applied Sciences"
DOI: 10.3390/app11209647
Abstract: Construction and demolition wastes (C&DWs) have raised a large number of ecological and environmental problems. Recycling C&DWs into arecycled concrete aggregate (RCA) will help save natural resources effectively and reduce the negative impact of C&DW… read more here.
Keywords: abrasion resistance; irpc; pervious concrete; sulfate attack ... See more keywords
Durability Deterioration of Geopolymer Stabilized Soft Soil under Sodium Sulfate and Magnesium Sulfate Attack: A Comparative Study
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DOI: 10.3390/buildings13041075
Abstract: Sulfate attack is one of the non-negligible factors that induces deterioration in the performance and life cycle of soil stabilizers. In this paper, the degradation mechanism of the durability of slag–fly-ash-based geopolymer stabilized soft soil… read more here.
Keywords: sulfate attack; solution; sulfate; deterioration ... See more keywords
Deterioration Process of Concrete Exposed to Internal Sulfate Attack
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DOI: 10.3390/ma13061336
Abstract: Damage to concrete structures with gypsum-contaminated aggregate occurs frequently. Aggregates in much of the southern part of China are contaminated with gypsum. Therefore, in this study, the effects of using different quantities of gypsum-contaminated aggregate… read more here.
Keywords: gypsum; sulfate; internal sulfate; sulfate attack ... See more keywords