NuclearSafety – IIT Guwahati Develops Advanced Cement Mortar for Radiation Protection
NuclearSafety – NuclearSafety -Researchers at the Indian Institute of Technology Guwahati have introduced a new method to improve cement mortar so that it becomes stronger, longer-lasting, and more effective at blocking harmful radiation. The development aims to enhance safety in nuclear power facilities and other environments where radiation exposure must be tightly controlled.
Strengthening Materials Used in Nuclear Infrastructure
Scientists at IIT Guwahati focused on modifying the composition of conventional cement mortar to improve its physical properties. The goal was to create a material that could serve both as a structural element and as a barrier capable of limiting radiation penetration.
By increasing the density and durability of the mortar, the researchers were able to make the material better suited for use in containment structures. These structures play a crucial role in nuclear facilities because they act as protective walls that prevent radiation from escaping into surrounding environments.
The improved mortar is expected to help engineers construct more reliable containment systems in nuclear reactors and other facilities where radiation safety is essential.
Importance of Reliable Radiation Barriers
The need for robust radiation shielding materials has been emphasized by past nuclear incidents around the world. Events such as the 1986 Chornobyl disaster and the 2011 Fukushima nuclear accident highlighted how critical strong containment structures are in preventing large-scale radiation exposure.
Containment systems are designed to withstand extreme conditions including earthquakes, explosions, and rapid temperature changes. The effectiveness of these systems largely depends on the quality and strength of the construction materials used in their design.
Cement mortar is a key component in concrete structures that form the backbone of nuclear containment systems. Improving its strength and radiation-blocking ability is therefore an important step toward building safer nuclear power plants.
Use of Microparticles to Improve Cement Mortar
To enhance the performance of cement mortar, the IIT Guwahati research team introduced four types of microparticles into the material. These included boron oxide, lead oxide, bismuth oxide, and tungsten oxide.
Each of these substances was added in controlled quantities to evaluate its influence on the mortar’s compressive strength. The researchers examined how the modified mortar performed after a curing period of 28 days, which is commonly used in construction testing.
In addition to strength tests, the team evaluated how well each modified mortar mixture could block mixed radiation fields consisting of gamma rays and neutrons. These two forms of radiation are commonly encountered in nuclear facilities.
The experiments showed that each microparticle contributed differently to the mortar’s overall performance. Some improved radiation shielding, while others enhanced structural strength or durability.
Researchers Explain the Study’s Findings
According to Professor Hrishikesh Sharma, Associate Professor in the Department of Civil Engineering at IIT Guwahati, the safety of nuclear infrastructure depends heavily on how containment materials perform under both mechanical stress and radiation exposure.
He explained that the research demonstrates how carefully designed cement mortar enhanced with selected microparticles can significantly improve both structural integrity and radiation shielding capacity.
The long-term objective of the research team is to create next-generation cement-based materials capable of performing reliably in harsh environments while also providing protection from complex radiation fields.
Potential Applications in Energy and Medical Facilities
The results of the study provide a foundation for developing new types of cement-based construction materials suited for nuclear power plants, small modular reactors, and facilities that handle medical radiation equipment.
By improving resistance to heat, heavy loads, and radiation exposure, the modified cement mortar could support the development of safer infrastructure in sectors where radiation safety is essential.
The research findings were published in the journal Materials and Structures. The study was co-authored by Professor Hrishikesh Sharma and research scholar Sanchit Saxena from IIT Guwahati, in collaboration with Dr Suman Kumar from the Heritage and Special Structures Department at the CSIR-Central Building Research Institute in Roorkee.
Next Phase of Research and Industry Collaboration
Following the laboratory results, the research team plans to scale the developed mortar into a complete concrete mix suitable for practical construction use. Future studies will include structural testing of reinforced concrete elements that incorporate the modified mortar.
The researchers are also working to refine the dosage of microparticles in order to achieve the best balance between strength, durability, workability, and radiation shielding performance.
To move the technology closer to real-world implementation, the team is seeking partnerships with nuclear energy organizations, construction material manufacturers, and companies involved in building nuclear infrastructure.
Discussions are already underway to test the technology under simulated field conditions and pilot-scale applications. Such testing could help determine how the enhanced cement mortar performs in real operational environments.