5,000 people were buried alive and 1,134 people lost their lives. It was the worst collapse accident in Bangladesh in 2013.

This was the most tragic engineering accident in human history. Because of the sponsor’s deliberate concealment, a nine-story building collapsed. Eventually, more than 3,000 people were buried alive, 1,134 died, and more than 2,500 were injured. Such a serious accident can no longer be called a disaster but a naked murder.

The People’s Republic of Bangladesh, referred to as Bangladesh, covers an area of 147,570 square kilometers and has a population of about 170 million. India surrounds it on three sides, east, west, north, and south, and borders Myanmar on the south. Due to its special geographical location, Bangladesh has become one of the least developed countries.

The most important industry in Bangladesh is the garment industry. However, due to their over-reliance on diplomacy, especially the World Trade Organization, to obtain a large number of orders and under the evil squeeze of merchants, Bangladesh has become the world’s largest producer of cheap clothing. one of the exporting countries. There are more than 8,000 large and small garment factories across the country. To save costs to the greatest extent, they directly ignore the importance of production safety and let workers work 12 hours a day in a polluted environment in dilapidated buildings. Finally, when an accident on April 24, 2013, caused many Western big names to be accused of being unscrupulous, Bangladesh began to pay attention to public safety.

At around 9 a.m. on April 24, 2013, more than 5,000 employees entered the Rana Building on the outskirts of Dhaka, the capital of Bangladesh. Construction of the building began in 2006 and was named after owner Rana. Only four floors were approved for commercial use when the building was first constructed. Still, due to the rapid development of the garment industry, there was an extreme shortage of factories across the country. Rana saw a business opportunity, so he converted the building into an industrial one and filled it with various garment-making machines.

In 2008, the building was completed and began to be rented out. As a result, the supply exceeded demand, so after his efforts, the relevant departments allowed him to build a new building on the original basis. In 2012, the original four-story building became eight-story. However, in the face of huge interest, the building is still planning to build a ninth floor.

Less than an hour after more than 5,000 workers entered the building, all workers heard a loud bang. Before they could react, the entire building collapsed instantly, except for part of the facade and the first and second floors with better foundations. Due to the unreasonable planning and crowded environment inside the building, almost all the workers above the second floor were buried. In an instant, the entire building was beyond recognition, and the surroundings were filled with dust.

People nearby participated in the rescue immediately, and police, firefighters, and the army also arrived one after another. However, due to the fear of secondary collapse, the initial rescue work could not use large equipment and could only rely on manual excavation. In addition, there were too many collapsed floors so that the initial rescue work could have been faster.

This accident tells us that problems with concrete in construction must be solved promptly. During construction, concrete admixtures play a very important role. When problems occur with concrete, such as cracking, insufficient strength, etc., they are often related to the improper use or quality of concrete admixtures. question related. For example, excessive use of water-reducing agents may cause problems such as segregation and bleeding in concrete; improper use of retarders may cause the concrete to set for too long, affecting the construction progress; and excessive use of early-strength agents may cause concrete cracking.

Therefore, in construction projects, the quality and usage of concrete admixtures must be strictly controlled to ensure that the performance of the concrete meets the design requirements. At the same time, when there is a problem with concrete, it should be analyzed and dealt with in time to find out the root cause of the problem and take corresponding measures to solve it. Only in this way can the quality and safety of construction projects be ensured.

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