Chapter 48

The party went up to the top of building three.

Cheng yingxuan's QQ car is equipped with flat shoes. Before she got off the car, she had changed her usual high-heeled shoes into flat shoes.

The cracks in the pool were observed on the top floor. The cracks were as wide as small fingers and irregular, and spread all over the pool.

"Cheng Gong, how do you think this concrete crack is caused? What should I do now? " Liu Jin is a little anxious.

After looking around, Cheng yingxuan made a professional judgment, "there are many reasons for concrete cracks, such as structural deformation, uneven settlement, reinforcement protection layer not well controlled, and no structural reinforcement. The cracks in the swimming pool are caused by improper mix proportion. As for what to do... "

She turned to LAN Jinchen and said, "President LAN, there are two ways to deal with it. One is to fill the cracks with professional leak filling materials, and then apply a surface to the concrete surface. In this way, the appearance can not be seen, and there is still a risk of water leakage in the future. The second way is to knock out the poured concrete and pour it again. The cost of the second kind is much more. You are the boss. See what you mean. "

"The second." LAN Jinchen said, "the most important thing I pay attention to is quality. It is impossible for us to save the cost and let the customers who build houses in the future take risks."

Cheng yingxuan said to Liu Jin, "according to the meaning of general manager LAN."

Liu Jin nodded.

Cheng yingxuan looks down at another building under construction, and only then reaches the second floor, "which company's concrete is used in building 5 now?"

Liu Jin said, "Yongming commercial concrete."

Blue brocade Chen frowned, "Cheng Gong, as a senior engineer, don't know which concrete to use?"

"Mr. LAN, I've just been promoted. I'm only responsible for building No. 8 of lanyue project, and dealing with the technical problems that can't be solved in LAN's architecture. " "I'm not in charge of the subdivision of building five," she said

"So it is." LAN Jinchen nodded and asked Liu Jin, "the floor of Building 5 is now being poured. How many grades of concrete are used?"

“C35。” Liu Jin replied nervously.

LAN Jinchen asked Cheng yingxuan, "what does Cheng Gong think?"

Her eyes glanced at Liu Jin's face. "Building 5 is 30 stories high. Now it's poured into the second floor. It doesn't need C35 concrete. C30 concrete can reach 25 MPa in seven days. The strength of C30 concrete in 28 days is 1.15 times of that in 7 days, and the strength in 60 days is 3 MPa higher than that in 28 days. Concrete is different from self mixing, the longer the time, the higher the strength. The concrete strength of C30 is enough. The cost of C35 is higher than that of C30. For the sake of cost, C30 is still affordable. "

In this position, she is not only responsible for the safety of high-rise buildings, but also for saving money for the boss. Otherwise, what would you like her to do?

"Cheng Gong said so." Liu Jin nodded quickly.

LAN Jinchen is not a good fool, "Liu Jin, as a supervisor, you don't know you don't need C35 concrete?"

"I..." Liu Jin had to lie, "I just want the building to be stronger."

"That's the best. If you do something secretly... " Before LAN Jinchen finished speaking, Liu Jin was already sweating down his forehead. Judging from his appearance, it was obvious that there was a ghost in his heart.

Cheng yingxuan has been running on the construction site since she was a freshman. Of course, she knows that supervisor Liu has a lot of money. She must have asked the company to pay C35 for concrete. In fact, she let the quality of C30 sent by the mixing plant and the price difference between them went into his own pocket. As long as it doesn't affect the quality, it's not convenient for her to say so.

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