Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Waterproofing and Anti-Bacterial Admixtures in Concrete01:22

Waterproofing and Anti-Bacterial Admixtures in Concrete

201
Concrete's susceptibility to water absorption is due to the capillary action within the pores of its hydrated cement paste. This action draws water in, creating the need for waterproofing admixtures to prevent such penetration. The efficacy of these admixtures is contingent upon the water pressure, with variations arising from different conditions such as rain, capillary rise, or hydrostatic pressure in structures intended to hold water.
Waterproofing admixtures render concrete hydrophobic,...
201
Plasticizers01:31

Plasticizers

286
Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
Plasticizers function by using surface-active agents to create repulsive electrostatic forces between cement particles. This dispersion enhances the concrete's...
286
Mortar Joint Deterioration in Masonry01:13

Mortar Joint Deterioration in Masonry

303
Mortar joint deterioration is a significant concern in masonry structures, with water accumulation in the joints leading to damage from freeze-thaw cycles. The repeated expansion of water during freezing and its melting during thawing develop and propagate cracks in the masonry joints. Eventually, this leads to the spalling of mortar from the joints, loosening masonry units and weakening the structure. The deteriorated mortar joints are also vulnerable to moisture intrusion into the walls.
The...
303
Efflorescence in Masonry01:25

Efflorescence in Masonry

272
Efflorescence in masonry walls appears as a fluffy crystalline powder, often white, resulting from water-soluble salts within the masonry or mortar. When water penetrates the masonry, it dissolves these salts and brings them to the surface, where they are deposited upon evaporation of water.
While initial efflorescence is common post-construction and can be cleaned with water and a brush, in certain instances, efflorescence can reappear and gradually diminish over time as salts are leached out...
272
Masonry in Cold and Hot Weather Conditions01:21

Masonry in Cold and Hot Weather Conditions

292
In cold weather, masonry construction requires specific precautions to ensure mortar does not freeze before curing, as this can significantly weaken its strength and watertightness. Mortar temperature should be maintained between 60°F and 80°F to support proper hydration and curing. Below 40°F, mortar water must be heated, but should not exceed 120°F as high temperatures can reduce mortar's compressive and bond strength.
Other key practices include keeping masonry units...
292
Curing of Concrete01:20

Curing of Concrete

319
The hydration of cement takes place within the water-filled capillary pores. However, environmental elements can disrupt this process by evaporating water from the concrete surfaces. Sealed concrete with a water-cement ratio below 0.5 experiences self-desiccation, leading to water loss. The water loss in concrete is mitigated by curing. This technique involves keeping the concrete saturated to maintain the necessary temperature and moisture conditions, to optimally fill the spaces in the cement...
319

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Serine Acetyltransferase from <i>Pseudomonas aeruginosa</i>: Distinctive Features, Pleiotropic Roles, and Therapeutic Potential.

International journal of molecular sciences·2026
Same author

Two birds with one stone: An antibiotic hit blocking <i>Staphylococcus aureus</i> heme uptake with serendipitous hemoglobin left-shifting activity.

iScience·2026
Same author

<i>In vitro</i> activity of gallium-protoporphyrin IX against <i>Leishmania major</i> and <i>Leishmania infantum</i>.

Microbiology spectrum·2026
Same author

<i>De novo</i> cysteine biosynthesis in <i>Pseudomonas aeruginosa</i>: Characterization of the two main cysteine synthase isoforms.

iScience·2026
Same author

Unveiling the real-time behaviour of Staphylococcus aureus through nanomotion sensing.

Scientific reports·2025
Same author

Cinnamaldehyde effectively disrupts <i>Desulfovibrio vulgaris</i> biofilms: potential implication to mitigate microbiologically influenced corrosion.

Applied and environmental microbiology·2025

Related Experiment Video

Updated: Jan 2, 2026

Production and Analysis of Sporosarcina pasteurii Biocement Bricks Using Custom 3D-Printed Molds for Unconfined Compression Tests
05:38

Production and Analysis of Sporosarcina pasteurii Biocement Bricks Using Custom 3D-Printed Molds for Unconfined Compression Tests

Published on: March 7, 2025

779

Moulds on cementitious building materials-problems, prevention and future perspectives.

Raffaella Campana1, Luigia Sabatini2, Emanuela Frangipani2

  • 1Department of Biomolecular Sciences, Division of Pharmacology and Hygiene, University of Urbino, Via S. Chiara 27, 61029, Urbino (PU), Italy. raffaella.campana@uniurb.it.

Applied Microbiology and Biotechnology
|December 6, 2019
PubMed
Summary

Mould thrives on building materials, causing structural damage and health risks. Innovative solutions like nanoparticles and natural biocides are being explored to combat mould growth on cementitious surfaces.

Keywords:
Building cementitious materialsHuman healthInnovative approachesMould growth

More Related Videos

Production and Testing of Moisture Behavior and Thermal Properties of Rapeseed Straw and Ganoderma resinaceum Mycelium Bio-Composites
09:39

Production and Testing of Moisture Behavior and Thermal Properties of Rapeseed Straw and Ganoderma resinaceum Mycelium Bio-Composites

Published on: September 5, 2025

429
Sandy Soil Improvement through Microbially Induced Calcite Precipitation MICP by Immersion
06:27

Sandy Soil Improvement through Microbially Induced Calcite Precipitation MICP by Immersion

Published on: September 12, 2019

10.0K

Related Experiment Videos

Last Updated: Jan 2, 2026

Production and Analysis of Sporosarcina pasteurii Biocement Bricks Using Custom 3D-Printed Molds for Unconfined Compression Tests
05:38

Production and Analysis of Sporosarcina pasteurii Biocement Bricks Using Custom 3D-Printed Molds for Unconfined Compression Tests

Published on: March 7, 2025

779
Production and Testing of Moisture Behavior and Thermal Properties of Rapeseed Straw and Ganoderma resinaceum Mycelium Bio-Composites
09:39

Production and Testing of Moisture Behavior and Thermal Properties of Rapeseed Straw and Ganoderma resinaceum Mycelium Bio-Composites

Published on: September 5, 2025

429
Sandy Soil Improvement through Microbially Induced Calcite Precipitation MICP by Immersion
06:27

Sandy Soil Improvement through Microbially Induced Calcite Precipitation MICP by Immersion

Published on: September 12, 2019

10.0K

Area of Science:

  • Building Materials Science
  • Microbiology
  • Environmental Health

Background:

  • Cementitious materials, paints, and organic/inorganic compounds provide a suitable substrate for mould development.
  • Mould growth on building materials leads to structural erosion and poses health risks via inhalation, ingestion, and dermal contact.
  • European Communities Council Directive 89/106/EEC mandates the use of materials resistant to fungal degradation and safe for users and the environment.

Purpose of the Study:

  • To review the challenges posed by mould growth on cementitious building materials.
  • To highlight innovative strategies for inhibiting or preventing mould proliferation.
  • To discuss the potential of nanoparticles, nanomaterials, and natural biocides in mould control.

Main Methods:

  • Literature review of current research on mould growth on cementitious materials.
  • Analysis of factors influencing mould development (nutrients, water, temperature, pH, moisture).
  • Exploration of novel approaches including nanotechnology and natural biocides.

Main Results:

  • Mould growth is influenced by environmental conditions and material composition.
  • Nanoparticles and nanomaterials show promise in inhibiting mould.
  • Natural biocides offer a potential alternative for sustainable mould management.

Conclusions:

  • Effective strategies are needed to mitigate mould growth on building materials.
  • Nanotechnology presents innovative solutions for enhanced material resistance.
  • Further research into natural biocides is crucial for developing eco-friendly mould control methods.