Properties of Concretes Incorporating Recycling Waste and Corrosion Susceptibility of Reinforcing Steel Bars

Blikharskyy, Zinoviy; Sobol, Khrystyna; Markiv, Taras; Selejdak, Jacek

doi:10.3390/ma14102638

Cited by 17 publications

(9 citation statements)

References 43 publications

(52 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It should also be noted the work in the direction of the influence of damage on reinforced concrete elements: (Voskobiynyk et al, 2017;Blikharskyy et al, 2021c) where the emphasis is on the joint effect of defect and damage with the formation of be-axial bending; (Klymenko et al, 2020), the paper considers the result of modeling corner damage in a column (Labocha and Paluszyński, 2021), where a significant effect is produced by damage with a loss of 2.5% of the concrete cross section, an increase stresses in the concrete on the 10% and in the reinforcement on the 43%, damage at level of loss 10 % of the cross-section of the column leads to an increase in stresses in the concrete on 27% and in the reinforcement on 58%; Authors study the influence of damage on the T-beam when taking into account three factors with their prioritization.…”

Section: Literature Reviewmentioning

confidence: 99%

Investigation of defective reinforced concrete beams with obtained damage of compressed area of concrete

Blikharskyy

Lobodanov

Vegera

2022

Production Engineering Archives

Self Cite

View full text Add to dashboard Cite

In the building industry, it is a frequent cause of damage to elements at different stages: during transportation, operation, installation, etc. Since replacing an element is not always possible due to various circumstances, it entails significant financial losses, logistics, and others. For this reason, the expediency of studying the effect of damage on the bearing capacity of reinforced concrete elements is growing. This effect is dependent on its type and has significant variability. In the case of the combination of the defect and damage in reinforced concrete elements, the complexity of the research of this element increases significantly. In this article is discussed: a review of damaged reinforced concrete elements; researching the influence of the damage and additional factors on the element; developed testing methodology for bending reinforced concrete elements with damage to concrete in a compressed zone with insufficient reinforcement, when performing damage to the action of the load and during the action of the load, is presented; the influence on the deformability and bearing capacity of the variability of damage on the sample with insufficient reinforcement is reflected, taking into account the factor of change in the load at which the damage is performed; a comparison is made of the dependence of the change in the actual height of the compressed zone on the change in the load on the elements; implementation of conclusions on the result of the study.

show abstract

Section: Literature Reviewmentioning

confidence: 99%

Investigation of defective reinforced concrete beams with obtained damage of compressed area of concrete

Blikharskyy

Lobodanov

Vegera

2022

Production Engineering Archives

Self Cite

View full text Add to dashboard Cite

show abstract

“…The behavior of the water in the cement paste (the microstructure's level of mortar) at negative temperature was studied by Koniorczyk et al [9]. The water in a concrete or in a mortar exposed to the alternate freezing and thawing freezes and expands by about 9% [8,10,11]. Lack of enough space to accommodate this extra volume cases internal stresses exceeding the tensile strength of a mortar.…”

Section: Introductionmentioning

confidence: 99%

“…Lack of enough space to accommodate this extra volume cases internal stresses exceeding the tensile strength of a mortar. They can provoke its cracking and scaling [11][12][13]. Usage of air-entraining admixtures (AEAs) became one of the important invention made in the concrete technology.…”

Section: Introductionmentioning

confidence: 99%

The effect of air-entraining agent on the properties of mortars

2023

Archives of Civil Engineering

View full text Add to dashboard Cite

The effect of the air-entraining agent on properties of mortar mixtures as well as on the compressive strength of hardened mortars was the objective of this study. Such mortars contain a certain amount of evenly spread closed air-voids pores with dimensions of 0.02-0.05 mm. On the one hand, the presence of a large volume of such air bubbles results in the reduction of mechanical properties of mortar. On the other hand, the use of this technological approach improves rheological properties of mortar mixture. The effect of the air entrainment on the flow, density, volume of entrained air of mortar mixture and compressive strength of hardened mortar was established. Obtained results show substantial increasing in the mortar flow at cement to sand ratio 1:2 by 1.8 times. The further decrease of C:S ratio results in a slight increase of the flow and even negligible its decrease at C:S = 1:4 compared to the reference mortar. The increase of the volume of entrained air results in the decrease of the density and compressive strength of mortar, but improve the resistance to freezing/thawing cycles. The results of this study can be a guide for mortar mix design to choose the most appropriate mix proportion to produce economically efficient mortars.

show abstract

“…The use of AEA results in obtaining evenly distributed small air-voids nearly spherical and typically in the range of 10-100 µm in diameter both in mortar and concrete which cause the reduction of such technological properties of fresh mortar as segregation and bleeding and as a result the durability (Cultrone et al, 2005;Aïtcin et al, 2015;Pigeon et al, 1995). It is well known that building mortar has a porous structure and the ability to absorb the water which can freeze in winter causing the expansion by about 9% and its destruction (Blikharskyy et al, 2021;Sun et al, 2010;Coussy et al, 2008). The presence of AEA protects a mortar against damage due to the water freezing (Saucier et al, 1991;Babiak et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Properties of Fresh and Hardened Mortars With Air-Entraining Agent

Markiv¹

2022

Theory build. pract.

View full text Add to dashboard Cite

The influence of the air-entraining agent (AEA) on a density, the volume of entrained air of mortar mix and compressive strength of hardened mortar was studied in this article. Results show that the addition of AEA results in the reduction of water to cement ratio to provide the targeted flow and the density that depends on the volume of entrained air. The addition of AEA causes the decrease of the density of mortar (C:S=1:2) by 8,2% and the increase of the compressive strength by 13,9% after 28 days of hardening compared to the mortar (C:S=1:2) without AEA. The further increase of a sand content in a mortar (C:S=1:3) results in slight decrease of a density of fresh mortar and compressive strength. If C:S ratio is 1:4 the increase of the density and the compressive strength decrease is observed in comparison with the mortar with C:S=1:3. The obtained results show that properties of mortar incorporating AEA depend on its mix proportion.

show abstract

Properties of Concretes Incorporating Recycling Waste and Corrosion Susceptibility of Reinforcing Steel Bars

Cited by 17 publications

References 43 publications

Investigation of defective reinforced concrete beams with obtained damage of compressed area of concrete

Investigation of defective reinforced concrete beams with obtained damage of compressed area of concrete

The effect of air-entraining agent on the properties of mortars

Properties of Fresh and Hardened Mortars With Air-Entraining Agent

Contact Info

Product

Resources

About