Research on Long-Term Strength of Glass-Fiber Reinforced Concrete

Ryabova, Antonina; Kharitonov, Alexey; Matveeva, Larisa; Shangina, Nina; Belentsov, Yu. A.

doi:10.1007/978-3-319-70987-1_68

Cited by 5 publications

(4 citation statements)

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“…As it can be seen from the grain composition of Table 1 and the test results of concrete mixtures, even a slight change in the composition of the fine fraction of less 0.01 mm can lead to significant changes in the technological properties of SCC. The results obtained are consistent with the data on the influence of grain composition of mineral additives and aggregates on the rheological properties of mixtures [36][37][38][39][40][41][42]. This can be used for the development of construction technologies [43][44][45][46][47][48].…”

Section: Research Results and Discussionsupporting

confidence: 84%

Technological Properties of Self-Compacting Concrete Mixtures with Ground Quartz Sand

Kazanskaya¹,

Fadeeva²,

Isakovsky³

2019

IJITEE

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Quantitative parameters of influence of grain composition of ground quartz sand and its quantity on the workability and segregation of self-compacting fresh concrete were determined at the constant amount of mixing water and water-cement ratio. Ground quartz sand in the amount of 50-150 kg/m3 was added instead of fine and coarse aggregates with changing the amount of polycarboxylate superplasticizer. It is stated that the use of ground quartz sand of finer grinding provides higher values of workability at the same quantity of water and superplasticizer. Segregation of the fresh concrete occurs when using increased amount of ground quartz sand of coarser grinding and increased amount of superplasticizer. Experimental studies have shown the effectiveness of the use of ground quartz sand to obtain self-compacting fresh concrete of different classes of workability SF1 and SF2 as well as classes of segregation resistance SR1 and SR2. The results of the experiments allow to state that the use of ground quartz sand of coarser grinding leads to segregation of fresh concrete at its low workability, while the use of ground quartz sand of finer grinding allows to obtain fresh concrete with resistance to segregation.

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Section: Research Results and Discussionsupporting

confidence: 84%

Technological Properties of Self-Compacting Concrete Mixtures with Ground Quartz Sand

Kazanskaya¹,

Fadeeva²,

Isakovsky³

2019

IJITEE

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“…An increase of the ratio of tension strength in bending (R tb ) to compressive strength (R comp ) was characteristic of defects reduction and structure improvement [ 52 , 53 ].…”

Section: Resultsmentioning

confidence: 99%

Supersulfated Cement Applied to Produce Lightweight Concrete

et al. 2021

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The physical and mechanical characteristics of expanded-clay lightweight concrete based on a supersulfated binder in comparison with lightweight concrete based on ordinary Portland cement were studied. In replacing CEM 32.5 with a supersulfated binder of 6000 cm2/g specific surface, one can increase the tensile strength in bending up to 20% and can increase the ratio of the tensile strength in bending to the compressive strength that indicates the crack resistance increase of concrete. Compressive strengths at the age of 28 days were equal to 17.0 MPa and 16.6 MPa for the supersulfated binder of 3500 cm2/g specific surface and CEM 32.5, respectively. Shrinkage deformation of hardening concrete, indicators of fracture toughness, frost resistance, and thermal conductivity were determined during the experimental works. The coefficient of thermal conductivity decreased up to 12% compared to the use of CEM 32.5. An enhancement in concrete properties was associated with the increase of supersulfated binder fineness.

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“…Ryabova et al [17] investigated long term bending strength of GFRC containing Silica fume and Metakaolin. The result showed that adding Metakaolin in an amount of 30% of Portland cement assist in keeping the long-term strength of FRC and the specific combination of Silica fume and Metakaolin added to the matrix of GFRC can even improve long-term bending strength.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Ultra-high Performance Concrete Reinforced by Glass Fibers under Accelerated Agin

Madhkhan

Saeidian

2021

IJE

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Ultra-High Performance Concrete (UHPC) is a cementitious composite with fine aggregates and a homogeneous matrix with high compressive strength and excellent durability against aggressive agents. It is common to use short steel fibers in the UHPC. Besides, using steel fibers considerably increases the flexural ductility, durability and energy absorption. Using glass fibers in UHPC is a novel technique which improves its mechanical properties and it has the benefit of being lighter, and cheaper than steel fibers. Furthermore, glass fibers can be used for thin concrete plates for aesthetic purposes. However, glass fibers reinforced concrete is incompatible with the hydration reaction in the alkaline environment of concrete as it can damage glass fibers, so the mechanical properties of the concrete are decreased over long periods. The mechanical properties of UHPC containing glass fibers (GF-UHPC) was investigated under three regimes of normal curing, autoclave curing, and autoclave curing plus being in hot water for 50 days (accelerated aging). Besides, the substitution of silica fume by Metakaolin in GF-UHPC was studied to understand its mechanical properties after thermal curing. The results showed that after accelerated aging, the behavior of specimens become more brittle and the modulus of rupture and toughness indices of all prismatic specimens decreased, the modulus of rupture for samples containing glass fibers was 40% lower than autoclave curing results. However, the compressive strength under accelerated aging increased at least 4% in comparison to the normal curing. Replacement of silica fume with Metakaolin slightly increased the toughness with regard to flexural strength.

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Research on Long-Term Strength of Glass-Fiber Reinforced Concrete

Cited by 5 publications

References 0 publications

Technological Properties of Self-Compacting Concrete Mixtures with Ground Quartz Sand

Technological Properties of Self-Compacting Concrete Mixtures with Ground Quartz Sand

Supersulfated Cement Applied to Produce Lightweight Concrete

Mechanical Properties of Ultra-high Performance Concrete Reinforced by Glass Fibers under Accelerated Agin

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