The roof of Terminal 1 of Indira Gandhi International Airport in New Delhi, India, collapsed in the early morning of June 28(local time), injuring many people. Indigo Airlines and other airlines issued an announcement announcing the suspension of flights involving the terminal.
After the roof collapse of Terminal 1 of Indira Gandhi International Airport, rescue and investigation work is in full swing. The accident caused at least dozens of injuries, some of whom were in serious condition and were rushed to hospital for treatment. The Indian government has activated the emergency response mechanism and mobilized medical resources to treat the injured.
Indigo Airlines and other affected airlines took quick action and announced the temporary suspension of all flights taking off and landing at Terminal 1 until safety inspections and repairs were completed. This move caused a large number of flight delays and cancellations, affecting thousands of passengers. The airline has notified passengers through official channels and provided options for rebooking and refunding tickets. At the same time, it is recommended that passengers pay attention to the latest flight dynamics and avoid unnecessary travel.
The Indian Civil Aviation Department said that preliminary investigation results showed that continued heavy rainfall may be one of the reasons why the roof structure could not bear the weight and collapsed. The team of experts is deeply analyzing the design, construction quality and maintenance records of the roof to determine the exact cause of the accident.
Meanwhile, the Indian Prime Minister's Office issued a statement promising a thorough investigation of the accident and rapid repair of the damaged infrastructure to ensure that the airport resumes normal operations as soon as possible. India's Minister of Transport also arrived at the scene to oversee the rescue and cleanup work. He assured the media that the government would do everything possible to ensure the safety of passengers while strengthening security reviews of critical infrastructure across the country.
Delhi, India airport
Concrete foaming agents are useful in construction
Foamed concrete is a lightweight concrete that contains a large number of closed bubbles, which are produced by foaming agents. Foaming agents play a vital role in the preparation of foamed concrete. Without foaming agents, the characteristics and performance of foamed concrete will be significantly affected:
Increased density: The role of the foaming agent is to introduce a large number of bubbles into the concrete mixture, which greatly reduces the density of the concrete. Without a foaming agent, the density of the concrete will increase, losing its lightweight properties and may no longer be suitable for construction applications that require lightweight materials.
Deterioration of thermal insulation performance: The low density and high porosity of foamed concrete give it excellent thermal insulation properties. The lack of a foaming agent means that there are fewer bubbles in the concrete, which reduces thermal resistance and reduces its effectiveness as an insulator.
Reduced sound absorption: The porous structure of foamed concrete helps absorb sound and improve the acoustic performance of the building. Without a foaming agent, the sound absorption ability of concrete is greatly reduced.
Changes in compressive strength: Although foamed concrete generally has a lower compressive strength than traditional concrete, its mechanical properties can be optimized by precisely controlling the size and distribution of the bubbles. Without a foaming agent, the strength of the concrete may be affected, becoming too brittle or too soft.
Changes in fluidity: Foaming agents not only create bubbles but also improve the fluidity of the concrete mixture, making it easier to pour. With a foaming agent, the concrete may become thicker and easier to pour and form.
Increased construction costs: Using a foaming agent can save on the use of raw materials because the foam increases the volume and reduces the need for cement and other aggregates. Without a foaming agent, costs may rise because more solid material is needed to achieve the same volume.
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Application scope of concrete foaming agent
Lightweight concrete manufacturing: Foaming agent reduces the density of concrete and reduces the deadweight of the structure. It is suitable for high-rise buildings, bridges, partitions, roof panels, etc., to reduce the impact of foundation loads and seismic forces.
Insulation: Foamed concrete has a low thermal conductivity and can effectively isolate heat. It is suitable for thermal insulation layers of exterior walls, roofs, and floors to improve the energy efficiency of buildings.
Acoustic performance improvement: The porous structure helps absorb and disperse sound, improving the sound insulation performance of buildings.
Fireproof performance: Foamed concrete has good fire resistance and can be used as a firewall or fireproof partition material.
Waterproof layer: The closed bubble structure of foamed concrete gives it a certain waterproof ability and can be used in waterproof projects such as basements and tunnels.
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