A 3D Lattice Modelling Study of Drying Shrinkage Damage in Concrete Repair Systems

In recent years, as structures become higher, larger, and more durable concrete whose compressive strength of the concrete is 150 N/mm 2 or more have been put to practical use. It is for this reason that it is necessary to develop strengthening materials with equal or better performance. Furthermore, the development of high-performance concrete repair materials is carried out because demand to seismic strengthening and repair increases. In this study, considering these circumstances, it was conducted an experimental study with the aim of developing a repair material using room temperature curing UFC (R-UFC). A binder composition preparation of the R-UFC has excellent fluidity under pressure. It was achieved that high-grade thixotropy, high compressive strength, and high bending strength. It can also be sprayed continuously because of its high thixtoropy. It was confirmed that the sprayed thickness was reached to 20mm by one work. Durability of this R-UFC was investigated and it was confirmed the high sulfate resistance, small drying shrinkage and low salt permeability.

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Micromechanical Study of the Interface Properties in Concrete Repair Systems

Journal of Advanced Concrete Technology ◽

10.3151/jact.12.320 ◽

2014 ◽

Vol 12 (9) ◽

pp. 320-339 ◽

Cited By ~ 28

Author(s):

Mladena Luković ◽

Branko Šavija ◽

Hua Dong ◽

Erik Schlangen ◽

Guang Ye

Keyword(s):

Interface Properties ◽

Concrete Repair ◽

Repair Systems

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Corrosion inhibitors in concrete repair systems

Magazine of Concrete Research ◽

10.1680/macr.2000.52.1.25 ◽

2000 ◽

Vol 52 (1) ◽

pp. 25-37 ◽

Cited By ~ 66

Author(s):

C. L. Page ◽

V. T. Ngala ◽

M. M. Page

Keyword(s):

Corrosion Inhibitors ◽

Concrete Repair ◽

Repair Systems

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A review on the influence of shrinkage reducing admixtures on concrete

Sustainability Agri Food and Environmental Research ◽

10.7770/safer-v10n1-art2532 ◽

2021 ◽

Vol 10 (1) ◽

Author(s):

Jerison Scariah James ◽

Angel Rose ◽

Elson John ◽

Sachin Paul

Keyword(s):

Surface Tension ◽

Autogenous Shrinkage ◽

Drying Shrinkage ◽

Common Source ◽

Shrinkage Cracking ◽

Plastic Shrinkage ◽

Concrete Mixtures ◽

Shrinkage Reducing Admixture ◽

Shrinkage Reducing Admixtures ◽

Damage In Concrete

Shrinkage cracking is a common source of distress in concrete structures. In addition to being unsightly, these cracks serve to accelerate other forms of damage in concrete, thereby shortening the service life of structures. One solution to reduce the potential for shrinkage cracking is to incorporate a shrinkage reducing admixture (SRA) in concrete mixtures. SRAs belong to a special type of organic chemicals (i.e., surfactants) that when mixed in water, reduce the surface tension of the liquid, and thereby reduce the magnitude of capillary stresses and shrinkage strains that occur when concrete is losing moisture. Various studies show that SRAs have proven to reduce drying, autogenous, and plastic shrinkage, which has been summarized in this literature. Keywords—Shrinkage Reducing Admixtures, Surfactants, Drying shrinkage, Plastic shrinkage, Autogenous shrinkage.

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