Study Finds Optimal Ratio of Nano-MgO for Concrete

Brief 

Researchers in India have found that adding no more than 4% magnesium oxide nanoparticles to concrete would considerably boost its durability by improving inhibition to porosity and fracture.

 

Insight

A paper published in Materials Today: Proceedings examined the mixing of concrete with magnesia (MgO) nanoparticles from the perspective of sustainability.

 

oncrete – Can it Keep Up with Advanced Constructions?

Concrete is a mixture of coarse and fine aggregates held together using a cement paste that hardens with time.The plentiful supplies, high flexibility, and well-established production procedures make concrete the most ubiquitous construction material on the plant

Many different types of mortars may be constructed by mixing the constituents in the appropriate amounts. Despite the development of modern cementitious composites, conventional mortar production techniques are no longer suitable to fulfill the needs of advanced multipurpose structures.

Advanced structures present tougher challenges for concrete. Therefore, there is a pressing need for practical and advanced concrete solutions.

 

The Role of Nanomaterials in Improving Durability of Cementitious Materials

Durability is one of the most critical and challenging issues faced by the construction industry.The development of nanomaterials has fueled the efforts to use more environmentally friendly materials. Nanomaterials are characterized by their large outer surface areas and better strength and tribological properties as compared to conventional materials.

Many ceramic compounds have significant cementitious reactions with oxides of calcium, which leads to the generation of additional silicates. This ultimately helps improve the structural characteristics and durability of cementitious materials.

Fiber-like materials improve the tensile properties of mortar by bridging cracks and preventing further crack growth thanks to their needle-like operation.

 

The Issue of Spall Liners

Recently, cementitious supplements have been extensively explored for producing concrete slabs.These additives increase interracial transit areas among cement and agglomerates and assist in generating dense crystallites, indicated by the enhanced physical properties.

Nonetheless, when exposed to extreme temperatures, these closely packed structures respond unpredictably, resulting in spall liners.

 

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