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Durable concrete repair — Importance of compatibility and ...

Jan 01, 1997  Long term integrity 272 Durable concrete repair: M. H. Decter and C. Keeley The compatibility of a repair mortar with the concrete to be repaired can greatly affect the success of the repair. The properties generally cited are modulus of elasticity, thermal coefficient of expansion and strengths (compressive, flexural, tensile).

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Durable concrete repair — Importance of compatibility and ...

A compatible mortar of lower strength and modulus of elasticity to match the concrete is indicated. The paper further describes the issue of compatibility of concrete and repair mortars and implications for durable repair. Test results for repair mortars illustrate this point. Excessive shrinkage of a repair mortar also causes failure.

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Permeability Compatibility Between Concrete Repair ...

Permeability Compatibility Between Concrete Repair Material and Concrete Substrate - Scoping Study. 8 . Abstract . The primary objective of this report is to develop a robust research program and to highlight the importance of research related to freeze-thaw durability and repair material compatibility with existing concrete substrates.

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Compatibility Considerations for Durable Concrete Repairs

criteria, durable concrete repair is more of an art than a science. In any examination of the durability of concrete repairs, it is important to distinguish between two elements of durability: the selection of repair material and the production of a du­ rable repair. The topic of durability of concrete repair

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COMPATIBILITY CONSIDERATIONS FOR DURABLE CONCRETE

Compatibility, the most important factor determining the durability and structural effectiveness of concrete repairs, is defined and discussed; drying shrinkage, one of the decisive components of compatibility, is discussed in detail. A ranking system that would help in the selection of repair materials with a lower risk of shrinkage stresses ...

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COMPATIBILITY CONSIDERATIONS FOR DURABLE CONCRETE REPAIRS

Compatibility, the most important factor determining the durability and structural effectiveness of concrete repairs, is defined and discussed; drying shrinkage, one of the decisive components of compatibility, is discussed in detail. A ranking system that would help in the selection of repair materials with a lower risk of shrinkage stresses ...

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A Study on Compatibility of Concrete Repair Materials

repair can withstand all the stresses induced by the volume change, chemical and electrochemical effects without distress. Figure: 1 Factors affecting durability of Concrete Repairs.[2] 2.2 Dimensional Compatibility The Dimensional compatibility of cement based repair materials deals with the four main types of deformation. Shrinkage. Creep.

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Rational Approach to Durable Concrete Repairs

Sep 01, 1993  Date: 9/1/1993. Abstract: Discusses the importance for long-term durability of compatibility of repair materials with the existing concrete substrate. Reviews the nature of materials currently used for surface repair of concrete and highlights some of the potential short- and long-term problems that may arise from incompatibility.

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Concrete Repair - National Precast Concrete Association

Jan 08, 2018  An important factor when choosing the correct repair material is to ensure there is compatibility between the original precast concrete and the repair material. Many incorrectly believe a stronger bag mix means a faster cure and better repair.

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A quantitative approach to the concept of concrete repair ...

this respect, compatibility between the repair materi-al and the existing concrete is of critical importance. In fact, the level of compatibility will generally de-termine whether a repair project is a success or a failure, and whether or not a repaired structure is du-rable. The importance of dimensional compatibility be-

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RELIABLE CONCRETE REPAIR-A CRITICAL REVIEW

The aim of concrete repair is to restore the load carrying capacity of a concrete structure or a member (Bissonnette, Courard et al. 2011) and to maintain its function and durability for a ...

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Types of Chemical Admixtures and Thier Importance in Concrete

Chemical Admixtures are added to change various properties of concrete like Durability, water reducers, workability, strength enhancement, corrosion protection, set acceleration, set retardation, crack/shrinkage control, flowability,self levelling, finish enhancement etc., Read to know more about how these admixtures affect concrete properties, their dosage etc.,

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Selection of Repair Materials for Concrete Structures

Polymer Concrete Most popular polymer concrete used is an epoxy concrete system with curing agents or methyl methacrylate monomer with an inhibitor and promoter. Epoxy system is widely available in formulated repairing materials. This repair material can be customized as per the requirement for use in repair of different types of concrete damages.

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[PDF] Concrete Repair Durability Semantic Scholar

A rule of thumb called estimating concrete repair durability, CRD was proposed. The risk associated with estimating the durability of repairs was indicated. A reason for optimism is that proactive monitoring of the condition of the structure and, consequently, management of the repair strategy allows to reach the designed life of the structure.

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Factors affecting the durability 2.1.1 Dimensional ...

2.1 Compatibility of repair materials with existing concrete It is mostly due to overemphasis on strength rather than on long-term durability that a majority of repairs suffer from cracking due to drying shrinkage, creep, excessive heat of hydration, and other causes. Compatibility of the repair materials with the existing substrate and durability

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The bond between geopolymer repair mortars and OPC ...

May 01, 2021  Among the many repair and strengthening techniques, sectional enlargement is the most common one, for which the compatibility between the repair material and the concrete substrate is of great importance [, , , ]. The commonly-used repair mortars were made from ordinary Portland cement (OPC) or their derivatives, such as including supplementary ...

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Development of Practical Guidelines to Achieve ...

One aspect of concrete repair that has plagued concrete repair experts and has not been extensively studied is concrete repair material compatibility with the existing substrate and service environment. It is a very complex issue. The old rule-of-thumb for compatibility was to replace like with like.

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Quality and Durability of Concrete

Silica fume concrete is also abrasion-resistant, and therefore, is being used in construction of spillways of concrete dams. The long-term strength and durability of concrete are important characteristics of concrete. The concrete structures must provide the designed service life.

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Compatibility Issues in Design and Implementation of ...

for a scoping study on material compatibility issues of concrete repair materials with existing concrete. This paper builds on work funded by Douglas Burke ... – Factors affecting the durability of a concrete repair system [6]. 18 Figure 3. – Factors to address in a repair project [5]. .....19 Figure 4. – Composite repair system [3]. .....

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Concrete Repair Durability

Concrete Repair Durability ... Overall, in construction, the linkage between theory and practice is of great importance. In the field of repair, it may happen at any moment that practice triumphs over modern theory. ... Moreover, if compatibility requirements [23,24] are not

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The Challenges of Achieving Compatibility in Concrete Repair

Dec 01, 2017  Title: The Challenges of Achieving Compatibility in Concrete Repair Author(s): Alexander M. Vaysburd, Benoît Bissonnette, and Kurt F. von Fay During Publication: Concrete International Volume: 39 Issue: 12 Appears on pages(s): 37-43 Keywords: durability, corrosion, strength, design Date: 12/1/2017 Abstract: The issue of compatibility in engineered repair composite systems

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RELIABLE CONCRETE REPAIR-A CRITICAL REVIEW

The aim of concrete repair is to restore the load carrying capacity of a concrete structure or a member (Bissonnette, Courard et al. 2011) and to maintain its function and durability for a ...

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(PDF) Compatibility of repair concretes in the aggressive ...

Durable concrete repair — Importance of compatibility and low shrinkage. Article. Jul 1997; CONSTR BUILD MATER; MH Decter; The durability of a concrete repair can depend on many factors. Those ...

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CONCRETE REPAIR IN THE FUTURE TURN OF THE CENTURY -

Comments are made on the current state of concrete repair. In order to produce durable repair with limited and predictable change over time and without deterioration, it is necessary to consider the factors affecting the design and selection of the repair system, as a whole system. The importance of this systems approach to repair is emphasized.

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Fundamental approach for the concept of concrete repair ...

Repair works quality is depending on a lot of fac-tors dealing with properties of the repair materials, the surface preparation of the substrate, the envi-ronment and the worker's qualification. First of all however, it is important to verify the physico-chemical compatibility of concrete substrate and repair materials.

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Required Properties of Concrete Repair Materials - The ...

🕑 Reading time: 1 minuteBesides being of compatible properties, repair materials for cement, concrete/mortar shall also be easy to apply and require no attention after the repair has been applied. Contents:Required Properties of Concrete Repair MaterialsLow Shrinkage of Concrete Repair MaterialsRequisite setting/hardening PropertiesWorkability of Concrete Repair MaterialsBond with

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Concrete Strength and Concrete Durability, Are they ...

Sep 22, 2017  A durable material helps the environment by conserving resources, reducing wastes and the environmental impacts of repair and replacement. Concrete durability is defined as the concrete

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(PDF) Study on water proofing cement mortar and concrete ...

Durable concrete repair — Importance of compatibility and low shrinkage. July 1997 Construction and Building Materials. MH Decter; The durability of a concrete repair can depend on many ...

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Selection of Repair Materials for Concrete Structures

Polymer Concrete Most popular polymer concrete used is an epoxy concrete system with curing agents or methyl methacrylate monomer with an inhibitor and promoter. Epoxy system is widely available in formulated repairing materials. This repair material can be customized as per the requirement for use in repair of different types of concrete damages.

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(PPT) Repair of damaged concrete structures Suganthan ...

REPAIR OF DAMAGED CONCRETE STRUCTURES UNDER THE GUIDANCE OF Dr. M.V.N. SIVAKUMAR SUGANTHAN R (161521) IMPORTANCE OF CEMENT CONCRETE Concrete is a composite material that consists essentially of a binding medium, within which are embedded particles or fragments of aggregates.

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Concrete Repair, Rehabilitation and Retrofitting IV ...

Sep 17, 2015  Electro Active Repair of concrete for improved durability of conventional repair R.B. Polder, M.R. Geiker A quantitative approach to the concept of concrete repair compatibility B. Bissonnette, F. Modjabi-Sangnier, L. Courard, A. Garbacz A.M. Vaysburd The compatibility in concrete repair—random thoughts and wishful thinking

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Mechanical Properties and Durability of Asphalt Emulsion ...

Durable concrete repair — Importance of compatibility and low shrinkage. July 1997 Construction and Building Materials. MH Decter; The durability of a concrete repair can depend on many ...

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Important Questions and Answers: Serviceability and ...

SERVICEABILITY AND DURABILITY OF CONCRETE . 1. How can use prevent the effect of freezing and thawing in concrete? Concrete can be restricted from frost action, damage of the structure by the entrainment of air. This entrainment of air is distributed through the cement paste with spacing between bubbles of no more than about 0.4mm. 2.

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