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Showing 1 to 20 of 23 for “"Repair material"”.
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APPLICATION OF TAGUCHI'S ORTHOGONAL ARRAY IN AN EXPERIMENT FOR FORMULATION OF CEMENTITIOUS REPAIR MATERIAL
… and, • Base formula + change = level 2. The raw material for each mixture were mixed. This sample were cast and the Above stated property were measured. The formulation that is closest to the target was: CFL = 70.0, CaSO4 = 50.0, OPC = 300.0, CaCO3 = 165.0, Silica sand= 450.0, Resin= 20, Casein = …
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Dimensional Changes of ProRoot white Mineral Trioxide Aggregate, EndoSequence Root Repair Material, and Biodentine During Setting Using Digital Image Correlation
Introduction: Dimensional changes in the materials used for root end fillings could enhance or weaken the seal of the filling. The purpose of this study is to quantify and compare the dimensional changes of ProRoot white Mineral Trioxide Aggregate (Dentsply Tulsa Dental Specialties, Johnson City, …
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Development of an expert system for reinforced concrete bridge repair.
… techniques for selecting reinforced concrete repair materials are often based on ad-hoc methods for specifying repair material properties. The inherent lack of understanding of material behaviour in this approach can lead to premature failure of repairs.This research has examined state of the …
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Effectiveness of high strength repair mortars in structural patch repairs of concrete members under axial compression
… research into the performance and efficacy of repair materials used in structural concrete patch repair applications. The repercussions of this have led to the development of repair standards and guidelines that fail to adequately cover requirements for structural repair, often poor repair …
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The effect of aggregate on the age at cracking of bonded concrete overlays subjected to restrained deformation
The need for effective and comprehensive repair techniques is increasing throughout the world as existing concrete structures continue to age. The bonded concrete overlay method, where a new repair material layer is cast over an existing damaged substrate, is the most commonly utilized method of …
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Wellbore Microannulus Characterization and Seal Repair: Computational and Lab Scale Modeling
… integrity and providing zonal isolation by repairing these wellbore flaws is of critical importance to the long-term isolation of CO2 and success of CCS. This research aims to characterize the microannulus region of the cement sheath-steel casing interface in terms of its compressibility and …
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Improvised explosive device crater repair for enduring route remediation
<p>"Recent road repairs performed on main supply routes (MSRs) and alternative supply routes (ASRs) in Iraq and Afghanistan revealed several deficiencies in current repair techniques. Temporary solutions such as aggregate backfill, asphalt, and traditional concrete repairs were unacceptable due to …
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Characterization and utilization of alkali-activated concrete for sustainable infrastructures
… concrete (AAC) for different structural and repair applications. Using AAC made of 100% FA reduces global CO2 emissions, saves energy, and decreases raw material consumption during the production process of ordinary Portland cement. Class C FAs, sourced from Labadie, Jeffery City, Kansas …
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Polymer and Concrete Composites in Industrial and Infrastructure Applications
Composite materials have a wide range of applications in civil and structural engineering due to their advantages in mechanical properties and higher strengths over the base materials alone. Polymer-concrete composites are particularly attractive for use in industrial and infrastructure …
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CHARACTERIZATION OF SENSING REPAIR MATERIALS
In order to monitor construction, repairs, and maintenance of various types of structures, it is critical to develop materials used for structural applications with sensing capabilities. In this study, polymer and cement based structural grouting materials with compressive strengths in the range of …
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An In-Vitro Comparison of Microleakage With E. faecalis In Teeth With Root-End Fillings of Proroot MTA and Brasseler's EndoSequence Root Repair Putty
… a bioceramic putty called EndoSequence Root Repair Material (ERRM) that can be used as a retrofilling material for surgical endodontics. The material is said to have many of the same chemical, physical, and biological properties as mineral trioxide aggregate (MTA), but with superior handling …
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Epoxy-Based, Rapid Setting Polymer Concretes for use in Military Airfield Repairs
When damaged, military airfields must be repaired quickly so that flying operations can resume. Due to their rapid-setting and high-strength properties, epoxy-based polymer concretes (PC) may provide a good alternative to the portland cement concrete (PCC) rapid repair mixes currently used by the …
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Alternative patch repair materials for rebar corrosion damage
… of corrosion damaged concrete is the patch repair procedure. However, in practice this method has shown to often be unreliable as a consequence of the widespread occurrence of shrinkage cracking and poor substrate-patch adhesion leading to debonding of the patch repair. From a practical …
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Evaluation of concrete patch repairs
… behaviour of 6 different types of generic repair materials, c) the water permeability of the above 6 types of generic repair materials, and d) the parameters which influence the adhesive strength of patch repairs. In order to evaluate the efficiency and quality of remote robotic …
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Design and performance of cost-effective ultra high performance concrete for bridge deck overlays
… durability and mechanical properties of such repair material can offer shorter traffic closures and prolong the service life of the pavement. The UHPC was optimized using supplementary cementitious materials (SCMs), proper combinations of sands, and adequate selection of fiber types and …
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Fatigue behaviour of CFRP-repaired corroded RC beams
… structures, the remaining fatigue life after the repair must be assessed. This research is focused on the use of CFRP for the repair of corroded reinforced concrete beams. A series of twelve beams, four corroded and repaired with mortar, four corroded and repaired with mortar and strengthened with …
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Carbon Fiber Reinforced Polymer Repairs of Impact-Damaged Prestressed I-Girders
… different Carbon Fiber Reinforced Polymer (CFRP) repair techniques are examined to determine how effectively each method can restore the ultimate flexural capacity of impact-damaged prestressed concrete girders. The number of severed prestressing strands and the amount of CFRP repair material …
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INTERACTION OF NEGATIVE PRESSURE WOUND THERAPY AND COMPOSITE BIOMATERIALS FOR SPINAL FUSION
… results when used in combination with biomaterials to accelerate wound healing in treating complicated wound with exposed bone (Wijewardena et al. 2011, DeFranzo et al. 2001). However, NPWT is not established as a treatment modality for orthopedic application and its mechanistic pathways …
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Effect of anti-corrosive coatings on the bond between corrosion-damaged rebar and concrete repair materials
… of reinforced concrete structures. During a repair strategy, when the patch repair method is considered, one of the steps usually involves the application of a protective coating to the corroded and subsequently cleaned steel. It is well accepted that protective coatings offer corrosion …
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