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https://doaj.org/article/25228...
Article . 2019
Data sources: DOAJ
https://dx.doi.org/10.18720/mc...
Other literature type . 2019
Data sources: Datacite
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Modified concrete for producing pile foundations

Модифицированные бетоны для производства свайных фундаментов
Authors: Djumageldy Baydjanov; Kalamkas Abdrakhmanova; Pyotr Kropachev; Galiya Rakhimova;

Modified concrete for producing pile foundations

Abstract

There are considered the issues of structural modification of heavy concrete with oligomer-polymer additives. It has been established that crystallization of the cement stone proceeds at macro- and micro-levels. Macro-pores are filled with products of crystallization of cement particles grafted on the surface of polyvinyl chloride (PVC) macromolecules. The migration of PVC macromolecules and oligomers of the waste of coke-chemical production (WCP) into defective zones is due to the occurrence of internal stresses during hardening and volumetric compression which causes the closure of macro- and micro-pores, as well as cracks and capillaries. Thus, for the complex of physical and mechanical properties, resistance to sulfate corrosion and frost resistance the studied concrete based on structurally modified concrete can be used for producing pile foundations arranged in conditions of highly saline soils. The presented results of experimental studies indicate sufficient corrosion resistance of the concrete under study.

В работе рассмотрены вопросы структурной модификации тяжелых бетонов олигомер-полимерными добавками. Установлено, что кристаллизация цементного камня протекает на макро – и микроуровнях. Макропоры заполняются продуктами кристаллизации частичек цемента, привитых на поверхности макромолекул поливинилхлорида (ПВХ). Миграция макромолекул ПВХ и олигомеров отходов коксохимической промышленности (ОКП) в дефектные зоны протекает за счет возникновения внутренних напряжений в процессе твердения и объемного сжатия, что обуславливает закрытие макро и микропор, а также трещин и капилляров. Таким образом, по комплексу физико-механических свойств, стойкости к сульфатной коррозии и морозостойкости исследуемые бетоны на основе структурно-модифицированного бетона могут быть использованы для производства свайных фундаментов устраиваемых в условиях сильно засоленных грунтов. Представленные результаты экспериментальных исследований свидетельствуют о достаточной коррозионной стойкости исследуемых бетонов.

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Keywords

Building construction, concrete durability, добавки, модифицированные бетоны, Engineering (General). Civil engineering (General), modified concrete, water-tightness, ground water, reinforced concrete pile foundations, грунтовые воды, водонепроницаемость, сульфатная коррозия, additives, resistance to corrosive environments, TA1-2040, sulfate corrosion, железобетонные свайные фундаменты, долговечность бетона, TH1-9745, стойкость к воздействию агрессивных сред

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
3
Top 10%
Top 10%
Average