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Related Concept Videos

Unsoundness of Aggregate due to Volume Change01:26

Unsoundness of Aggregate due to Volume Change

Unsoundness in aggregates due to volume changes is primarily caused by the physical alterations aggregates undergo, such as freezing and thawing, thermal changes, and wetting and drying. Unsound aggregates, when subjected to these changes, result in volume change upon disintegration. This, in turn, contributes to the deterioration of concrete, including scaling, pop-outs, and cracking. Particular types of aggregates, such as porous flints, cherts, and those containing clay minerals, are...
Aggregate Cement Ratio01:21

Aggregate Cement Ratio

The Aggregate Cement ratio refers to the weight of aggregate divided by the weight of cement in a concrete mix. Altering this ratio has profound effects on the concrete's properties. This ratio plays a pivotal role in determining the strength, workability, and durability of concrete. When the Aggregate Cement ratio is higher, the mix is leaner, meaning it has less cement paste to lubricate the aggregate, potentially making the concrete less workable. Such mixes, known as lean, enhance the...
Porosity and Absorption of Aggregate01:20

Porosity and Absorption of Aggregate

Aggregates contain pores of varying sizes; while some are completely enclosed within the particles, others open onto the surface, allowing water to penetrate. The porosity of aggregates is a major factor contributing to the overall porosity of concrete, given that aggregates constitute about three-quarters of concrete's volume.
When all pores in an aggregate are filled with water, the aggregate is considered saturated and surface-dry. If left in dry air, water will evaporate until the aggregate...
Alkali Aggregate Reaction in Concrete01:26

Alkali Aggregate Reaction in Concrete

The alkali-aggregate reaction in concrete involves natural siliceous minerals in aggregates reacting with alkaline hydroxides derived from cement alkalis. This reaction forms an alkali-silica gel that absorbs water, swells, and increases in volume, which is confined by the surrounding cement paste, creating internal pressures that crack and disrupt the concrete. The extent of expansion and damage can be partly attributed to the alkali-silica reaction's osmotic hydraulic pressure and the...
Aggregates Classification01:29

Aggregates Classification

Aggregate classification is generally based on its size, petrographic characteristics, weight, and source. Size classification ranges from coarse to fine aggregates, defined by the size of the particles. Coarse aggregates are particles that do not pass through ASTM sieve No. 4, and aggregates that pass through the sieve are fine aggregates.
Petrographic classification groups aggregates based on common mineralogical characteristics. Some of the common mineral groups found in aggregates are...
Moisture Content and Bulking of Aggregate01:10

Moisture Content and Bulking of Aggregate

The moisture content of aggregates is a crucial factor in construction, particularly in concrete mixing, as it influences the total water required in the mix. Moisture content represents the water coated on the exterior surface of the aggregate existing in a saturated and surface-dry condition. The total water content of a moist aggregate is the sum of its moisture content and water absorption.
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...

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Updated: Jun 18, 2026

Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties
09:34

Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties

Published on: November 15, 2016

Mineral trioxide aggregate--a review.

Arathi Rao1, Ashwini Rao, Ramya Shenoy

  • 1Pedodontics and Preventive Dentistry, Manipal College of Dental Sciences, Mangalore, Karnataka, India. arathi.rao@manipal.edu

The Journal of Clinical Pediatric Dentistry
|December 4, 2009
PubMed
Summary
This summary is machine-generated.

Mineral Trioxide Aggregate (MTA) is a versatile dental material with excellent physical properties and regenerative capabilities. This review covers MTA

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Synthesis and Characterization of Fe-doped Aluminosilicate Nanotubes with Enhanced Electron Conductive Properties
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Experimental Protocol to Investigate Particle Aerosolization of a Product Under Abrasion and Under Environmental Weathering
07:47

Experimental Protocol to Investigate Particle Aerosolization of a Product Under Abrasion and Under Environmental Weathering

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Area of Science:

  • Dental Materials Science
  • Biomaterials Engineering
  • Regenerative Dentistry

Background:

  • Mineral Trioxide Aggregate (MTA) is a novel dental material.
  • It exhibits promising clinical applications in various dental procedures.
  • MTA is recognized for its versatility and potential in modern dentistry.

Purpose of the Study:

  • To review the availability, composition, and manipulation of MTA.
  • To discuss the setting reaction, properties, and clinical applications of MTA.
  • To focus on the use of MTA specifically in pediatric dental practice.

Main Methods:

  • Literature review of scientific articles and clinical studies on MTA.
  • Analysis of MTA's physical properties, biocompatibility, and bioactivity.
  • Compilation of data on MTA's efficacy in pediatric applications.

Main Results:

  • MTA possesses favorable physical characteristics.
  • It demonstrates significant potential for stimulating tissue regeneration.
  • MTA elicits a positive response from dental pulp tissues.

Conclusions:

  • MTA is a highly versatile material with significant advantages in dentistry.
  • Its regenerative and pulp-healing properties make it valuable.
  • The review highlights MTA's established and potential roles in pediatric dentistry.