Modified GFRC for Durable Underground Construction

Kharitonov, Alexey; Ryabova, Antonina; Pukharenko, Yu. V.

doi:10.1016/j.proeng.2016.11.833

Cited by 10 publications

(5 citation statements)

References 1 publication

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“…It can be noted that the use of quartz flour of finer grinding provides higher values of workability in case of the same amount of superplasticizer and mixing water. This proves the results on the increase of the plasticizing ability of the superplasticizer in mixtures with fine-grained quartz sand obtained by other authors [1,2,13,28,29].…”

Section: Research Results and Discussionsupporting

confidence: 88%

“…In recent decades the self-compacting concretes have been in demand in transport and underground construction [1][2][3][4]. They are characterized by the ability to spread and condense under their own weight and fill the formwork with thick reinforcement, channels and other places where it is difficult to use traditional compaction with vibration [5,6].…”

Section: Introductionmentioning

confidence: 99%

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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: 88%

Section: Introductionmentioning

confidence: 99%

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

Kazanskaya¹,

Fadeeva²,

Isakovsky³

2019

IJITEE

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“…With pneumatic spraying, glass fibre added into mortar mixture at the time of pouring and there is a significant modification of the compositions embodied in binder consumption. This can effect creep strain [37].…”

Section: Creepmentioning

confidence: 99%

Glass Fibre Reinforced Concrete (GFRC)

Iskender

Karasu

2018

El-Cezeri Fen Ve Mühendislik Dergisi

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In the 1940's, potential of glass as a construction material was realized and improvement continued with the addition of zirconium dioxide in 1960's for harsh alkali conditions. To enhance durability of materials, new generation of glass fibres directed to improvement process. In this way, glass fibre reinforced concrete (GFRC) was started to produce for the satisfaction of different demands. Scientific studies and tests on the GFRC have shown that the physical and mechanical properties of the GFRC change depending on the quality of the materials and the accuracy of the production methods. GFRC can be used wherever a light, strong, fire resistant, weather resistant, attractive, impermeable material is needed. As technology advances, it is possibly expected to build the whole building and complex freeform with low cost. In recent years, the effect of glass fibres in hybrid mixtures has been investigated for high-performance concrete (HPC), an emerging technology termed, which has become popular in the construction industry.

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“…The thickness of the masonry walls is usually 1; 1.5 or 2 bricks that allows determining the size of the sample in the plan. It is necessary to take into account the scale factor of the cross section as the strength of the elements depends significantly on the size of sample [41][42][43][44]. The strength of the masonry in the samples with size of 380×380 mm in plan is taken as the basic value.…”

Section: Research Results and Discussionmentioning

confidence: 99%

Methods of Assessing the Strength of Masonry to Ensure the Reliability of Reconstructed Structures

Kazanskaya¹,

Belentsov²

2019

IJITEE

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The reliability of structures in the reconstruction of buildings depends on quality control methods that can be destructive and non-destructive. Directions for improving the accuracy of methods for assessing masonry as a complete construction system are proposed in the paper. The factors to be taken into account when assessing the bearing capacity of the operating buildings have been stated. Margin of errors of a number of parameters using different methods of strength assessment have been determined.

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Modified GFRC for Durable Underground Construction

Cited by 10 publications

References 1 publication

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

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

Glass Fibre Reinforced Concrete (GFRC)

Methods of Assessing the Strength of Masonry to Ensure the Reliability of Reconstructed Structures

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