Compatibility of repair mortars with concrete in a hotdry

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Compatibility of repair mortars with concrete in a hot-dry ...

2001-2-1  Compatibility in a repair system is the combination of properties between the repair material and the existing concrete substrate which ensures that the combined system withstands the applied stresses and maintains its structural integrity and protective properties in a certain exposure environment over a designated service life , . Dimensional stability, chemical, electrochemical, and transport properties of the repair material and the parent concrete are the main aspects of compatibility.

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Compatibility of repair mortars with concrete in a hot-dry ...

A research programme was conducted at Leeds University to investigate the properties of cementitious, polymer and polymer modified (PMC) repair mortars. Following an earlier publication on the intrinsic properties of the materials, this paper presents results on the compatibility of these materials with concrete.

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Compatibility of repair mortars with concrete in a hot-dry ...

They concluded that the high shrinkage strain of cementitious repair mortars affects their compatibility with concrete and indirectly increases the permeability at the interface of the combined ...

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Compatibility of Repair Mortars with Nineteenth Century ...

2012-5-19  In a first project, several historic concrete buildings were studied, and a major decay mechanism was identified: erosion, leading to the loss of the original fake stone appearance. Today, due to a lack of appropriate repair materials, grey Portland cement-based mortars and paintings are used, leading to a complete loss of the original aspect.

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Compatibility of concrete repair materials and systems ...

1996-2-1  Good guidance regarding the use and limitations of resin mortars (polymer concretes) for repair applica­tions is provided in publications by Hewlett and Hurley5, Mays and Wilkinson4 and Heiman and Koerstz6• In particular they discuss issues such as mod­ulus (stiffness) compatibility, thermal compatibility and electrochemical compatibility of the repair systems.

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Durable concrete repair — Importance of compatibility and ...

1997-1-1  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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Compatibillty Of Repair Mortar With Migrating Corrosion ...

1997-3-9  One of the methods for corrosion protection of reinforced concrete is the use of migrating corrosion inhibitor as an admixture in repair mortars. The admixture must be effective for corrosion protection and compatible with polymers added to repair mortar to improve properties of fresh and hardened mortar.

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The compatibility of earth-based repair mortars with ...

2015-10-3  3rd Historic Mortars Conference 11-14 September 2013, Glasgow, Scotland 1 The compatibility of earth-based repair mortars with rammed earth substrates M. I. Gomes1, T. Diaz Gonçalves2 and P. Faria3 1. Lisbon Engineering Superior Institute (ISEL), Lisbon, Portugal, [email protected] 2.

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Bond Strength of Patch Repair Mortars for Concrete ...

No matter what repair system is chosen one of the requirements of a repair system is the ability to provide an adequate bond between the repair and the old concrete. Ideally the bond strength should be such that the composite structure behaves as monolithial.

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Physical and mechanical properties of concrete repair ...

2015-1-2  The results of the experimental study showed that the repair mortar containing silica fume and synthetic fibers gave a better strength in all curing environments. The study showed also the negative effect of hot and dry environment on all types of ready-mixed repair mortars, and demonstrated the importance of humid curing during early age.

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Compatibillty Of Repair Mortar With Migrating Corrosion ...

1997-3-9  One of the methods for corrosion protection of reinforced concrete is the use of migrating corrosion inhibitor as an admixture in repair mortars. The admixture must be effective for corrosion protection and compatible with polymers added to repair mortar to improve properties of fresh and hardened mortar.

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Assessment of the Compatibility of Repair Mortars in ...

In restoration works compatibility requirements of repair mortars are defined based on the original mortar characteristics, but the efficiency and the performance of the repair mortars after application on masonry are not generally evaluated. From this perspective, original mortars and repair mortars from two historic masonry structures were analyzed for their characterization.

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The compatibility of earth-based repair mortars with ...

2015-10-3  the repair mortars, regardless of the type of binder used for that purpose. Keywords: rammed earth substrates, earth repair mortars, compatibility between materials 1. Introduction In a society where questions related with sustainable development and ecology start to matter, the use

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Compatibility assessment for repair mortars: case study ...

Mortars developed for the reconstitution and plastic repair of natural stones have become increasingly more popular. They make a good alternative for the replacement of deteriorated stones, since they are capable of preserving the (memory of) diversity in building materials. In this article, the ‘compatibility’ of repair mortars is discussed and the various approaches towards these ...

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Bond Strength of Patch Repair Mortars for Concrete ...

However one should always bear in mind the compatibility of the system with the old or deteriorated concrete structure. No matter what repair system is chosen one of the requirements of a repair system is the ability to provide an adequate bond between the repair and the old concrete.

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The compatibility of earth-based repair mortars with ...

This work analyses experimentally the performance of earth-based repair mortars applied on rammed earth surfaces. The mortars are based on earth collected from rammed earth buildings in south Portugal or on a commercial earth. Eight repair mortars were formulated, with the unstabilized soils or including also small binder content.

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Concrete Repair Mortars with Reduced Carbon Footprint

2021-7-28  CONCRETE REPAIR MORTARS WITH REDUCED CARBON FOOTPRINT Sika MonoTop®-4012 High performing and sustainable structural and non-structural concrete repair mortar HIGH APPLICATION THICKNESS IN ONE LAYER, UP TO 120 MM SUITABLE FOR REPAIRS UNDER LIVE DYNAMIC LOADS REDUCED DUST FORMATION LOW CARBON FOOTPRINT: LEED

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Search results TU Delft Repositories

Compatibility of repair materials in conservation is a widely desired goal, but difficult to achieve. In this research, the compatibility of four commercial stone repair mortars, commonly used in conservation practice in the Netherlands and neighbouring countries, is discussed.

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(PDF) Restoration Mortars in Conservation Work ...

The use of restoration mortars for stone repair on historic masonry buildings and structures is becoming increasingly more prominent in Scotland; the negative impacts of climate change on the ...

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CONFERENCE: SCC 2007 GHENT COMPATIBILITY

2013-1-17  WITH SELF COMPACTING REPAIR MORTARS L. Courard (1) and B. Bissonnette (2) (1) GeMMe – Building Materials, ArGEnCo Department, University of Liège, Belgium (2) CRIB – Université LAVAL, Québec, Canada Abstract Durable adhesion of repair material on concrete substrate requires compatibility between the materials to be bonded.

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Analysis of Compatibility between Repair Material and ...

In this paper, the writers investigate the compatibility between selected cementitious repair materials and a substrate concrete using a modified ASTM C 78 test procedure. The flexural strength and load-deflection curves of composite beams prepared with substrate concrete and repair materials were compared to the results from the substrate beam ...

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Evaluation of cementitious repair mortars modified with ...

The aim of this study was to evaluate the effects of added polymers on the properties of repair mortars. Two types of polymers, ethylene vinyl acetate and polyvinyl acetate–vinyl carboxylate, were used as a replacement for 3%, 5%, and 8% of the cement (by weight). All tests were conducted using two water–cement ratios of 0.5 and 0.6. The effectiveness of the repair materials was evaluated ...

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Compatibility study and adaption of stone repair mortars ...

In this study, the compatibility of the different stone repair mortars with the Lede stone are tested. Further, a study was made whether the mortar recipes can be adapted for a better compatibility. In addition, the effect of glauconite addition in the mortar is studied to resolve the possibility of ageing of the mortar similar to the stone.

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Repair Mortars - Sika

2021-8-6  Repair mortars are specifically designed for restoring or replacing the original profile and function of the damaged concrete. They help to repair concrete defects, improve appearance, restore structural integrity, increase durability and extend the structure’s longevity.

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Evaluation of compatible mortars to repair 19th century ...

2021-3-14  After applying the 4 mortars on the slabs, visual observations and pull-out tests will be carried out before and after artificial aging. Finally, the repair mortar presenting the best performances will be tested on site in a monument of Grenoble. Keywords. Cast stone Compatibility Erosion Natural cement Repair mortar Language. English. DOI. 10 ...

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CONFERENCE: SCC 2007 GHENT COMPATIBILITY

2013-1-17  WITH SELF COMPACTING REPAIR MORTARS L. Courard (1) and B. Bissonnette (2) (1) GeMMe – Building Materials, ArGEnCo Department, University of Liège, Belgium (2) CRIB – Université LAVAL, Québec, Canada Abstract Durable adhesion of repair material on concrete substrate requires compatibility between the materials to be bonded.

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Pore structure of historic and repair Roman cement mortars ...

The Roman cement repair materials have been found to develop pore structures similar to those of historic mortars. Therefore, they are in broad terms compatible with historic masonry or stuccoes.

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Freeze-thaw durability of repair mortars and porous ...

Freeze-thaw cycles can cause considerable damage to porous materials and thus have an adverse effect on the durability of mortars and porous stone. To assess the behavior and frost resistance of two types of porous limestone, three commercially available repair mortars and four mixtures of laboratory-prepared repair mortars were subjected to freeze-thaw cycles according to EN 12371.

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2006, pp. 183-190 Repair mortars for masonry bridges.

2016-9-9  mortars strengthen with pozzolans can last for at least 2,000 years. Furthermore, this work evidences that, according to Brandi’s principle of compatibility as well as recent experimental and analytical work, hydraulic lime mortars are more suitable for masonry repair

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The influence of binder/aggregate ratio on the pore ...

Repair mortars with different B/Ag (binder/aggregate) ratios and natural stone were studied in order to understand the influence of limestone aggregate on the properties of mortar and to check the compatibility of repair mortar with a porous limestone. Three different types of mortars with three different aggregate contents were evaluated by using mercury intrusion porosimetry (MIP) and water ...

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