| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Heath, Andrew
University of Bath
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (27/27 displayed)
- 2024Improving the pozzolanic reactivity of clay, marl and obsidian through mechanochemical or thermal activationcitations
- 2023Insights into the piezoceramic electromechanical impedance response for monitoring cement mortars during water saturation curingcitations
- 2022The impact of mechanochemical activation on the physicochemical properties and pozzolanic reactivity of kaolinite, muscovite and montmorillonitecitations
- 2022Air-entraining admixtures as a protection method for bacterial spores in self-healing cementitious composites:Healing evaluation of early and later-age crackscitations
- 2022Effect of fibre loading on the microstructural, electrical, and mechanical properties of carbon fibre incorporated smart cement-based compositescitations
- 2022Air-entraining admixtures as a protection method for bacterial spores in self-healing cementitious compositescitations
- 2020Compressive Strength of Novel Alkali-Activated Stabilized Earth Materials Incorporating Solid Wastescitations
- 2018Effect of recycled geopolymer concrete aggregate on strength development and consistence of Portland cement concretes
- 2018Concretes incorporating recycled geopolymer aggregate - Implications and properties correlations
- 2018Chemical aspects related to using recycled geopolymers as aggregatescitations
- 2017Alkaliphilic Bacillus species show potential application in concrete crack repair by virtue of rapid spore production and germination then extracellular calcite formationcitations
- 2016Investigation of the Recycling of Geopolymer Cement wastes as Fine Aggregates in Mortar Mixes
- 2016Chemical aspects related to using recycled geopolymers as an aggregate
- 2016Recycling of fly ash-slag Geopolymer binder in mortar mixes
- 2015The environmental credentials of hydraulic lime-pozzolan concretescitations
- 2015Structural and durability properties of hydraulic lime-pozzolan concretescitations
- 2015The environmental credentials of lime-pozzolan concretescitations
- 2014Numerical analysis of triplet shear test on brickwork masonrycitations
- 2013Laboratory scale testing of extruded earth masonry unitscitations
- 2013The potential for using geopolymer concrete in the UKcitations
- 2012The feasibility and potential of modern hydraulic lime concretes
- 2012Drystone retaining walls: ductile engineering structures with tensile strengthcitations
- 2009The compressive strength of modern earth masonry
- 2009The compressive strength of modern earth masonry
- 2009Compressive strength of extruded unfired clay masonry unitscitations
- 2001Quantifying Longitudinal, Corner and Transverse Cracking in Jointed Concrete Pavements
- 2000Top-down cracking of rigid pavements constructed with fast-setting hydraulic cement concrete
Places of action
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article
Air-entraining admixtures as a protection method for bacterial spores in self-healing cementitious composites
Abstract
<p>Costs associated with the encapsulation process of bacterial spores continue to be a limiting factor for the commercialisation of self-healing cementitious materials. The feasibility of using air-entraining admixtures (AEAs) as an economical and straightforward encapsulation method for bacterial spores was evaluated to heal cracks (∼0.50 mm) that were formed at an early (28 days) or later age (9 months). Three AEAs, commonly used in concrete industry, were compared to a successfully proven protection method (i.e., via aerated concrete granules (ACGs)). In this regard, only one of the three AEAs investigated improved the healing performance when compared to an equivalent mix using bacterial spores encapsulated in ACGs. Healing ratios obtained with this successful AEA were 59.6% and 46.2% higher than the results observed for the ACGs-containing mix when the cracking age was 28 days and 9 months, respectively. Moreover, water penetration resistance was increased by 18.1% or presented very similar values (∼84%) after 56 days of healing for early or later-formed cracks, respectively. Moreover, a simple cost analysis was conducted to confirm the significant economic benefits of using AEAs to protect directly added bacterial spores. In this regard, the cost of using AEAs is about 13 times lower than for ACGs. Therefore, this study provides for the first time, evidence of the feasibility of using AEAs to protect bacterial spores, opening the doors to the development of bespoke AEAs to design cost-efficient self-healing cementitious materials.</p>