Qian Haijuan said happily: "If the enterprise does not stand, the crosser will not work." Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 The philosophical saying info originally meant that standing on tiptoe may be high for a while, but it will never last. Although it is tempting to walk across the big road, it must stop after walking for a short time. If you can't go with the flow and rush to achieve results, the result will be that you can't do it quickly. For us engaged in concrete technology, we must be down-to-earth, step by step, slowly accumulate knowledge and technology, all forms of subjective and radical behavior are undesirable. Only by following the law of changing from quantity to quality, step by step, with sincerity and perseverance, can we become an excellent concrete engineering and technical personnel. ”

"There are also artifacts in the world, which cannot be done. Those who do it lose, and those who hold it lose. Therefore, things may go or follow, or boast or blow, or strong or bad, or carry or fall. Originally, this refers to the Taoist Kung Fu Tuna technique, where qi and blood are the basic substances that make up the human body, and they are the driving force and source of life. Qi is yang, blood is yin, and qi and blood have a relationship of yin and yang, mutual resources, and mutual dependence. The health and longevity of the body depends entirely on whether the qi and blood can be fully harmonized. As far as concrete is concerned, the structure of concrete is a skeleton network structure, just like the human body, the constituent materials of concrete, cementitious materials, water, aggregates and admixtures, are also interdependent. ”

Li Ruoyu was very interested in listening to it, and so was Bai Yurou, the two glanced at each other, thinking that this Qian Haijuan was a talent.

Of course, Bai Yurou also saw that this Qian Haijuan had some thoughts about Li Ruoyu, she didn't know it yet, in fact, Qian Haijuan and Li Ruoyu also had some love, but Li Ruoyu didn't accept it, so Qian Haijuan didn't become Li Ruoyu's woman.

Qian Haijuan couldn't stop as soon as she said, "Either line or follow, the slurry in the concrete wraps the aggregate and produces fluidity, so that the concrete can achieve a dense effect, and the concrete is poured into the formwork, and it is necessary to fill every place of the formwork smoothly, all of which lies in the driving role of the concrete slurry." If the slurry is too little, then the concrete will aggregate exposed, workability deteriorates, and even segregation; if the concrete slurry is too much, the viscosity of the concrete slurry is too high, then the resistance of the concrete flow will also increase, so in the design of the concrete mix ratio, it is necessary to emphasize an optimal slurry-bone ratio, and the slurry and aggregate are reasonably matched, so as to prepare the concrete with good working performance. ”

Li Ruoyu said with a smile: "Manager Qian, I didn't expect you to have a study of the Tao Te Ching, and you can actually combine this kind of qigong book with concrete, which is amazing." ”

Qian Haijuan smiled embarrassedly and said: "Mr. Li has won the award, I just think they can be linked, as for whether it is right or not, please correct it! Or boasting or boasting originally means to exhale slowly to warm the blood, and to exhale quickly to cool down." When designing the concrete mixture, it is also necessary to consider the influence of the setting time of the concrete on the concrete. Retarder is generally added to the concrete admixture to adjust the setting time of concrete. If the concrete setting time is too long, although it has a good effect on the collapse of concrete, it will affect the strength of concrete to a certain extent, and if the setting time is long to a certain extent, it will even lead to the concrete can not produce strength. On the contrary, if the concrete setting time is too short, the concrete collapse may be accelerated, and if it is a large volume of concrete, it may also lead to the rapid release of hydration heat, and the concrete will produce harmful cracks, and eventually fall short. Therefore, it is necessary to find a balance in the middle, just as stir-frying must master the heat, and the concrete mix design also needs to control the setting time. ”

Everyone was quite surprised to hear this, and after thinking about it carefully, there was really some truth. Although many people present did not understand the concrete mix ratio, the principle is the same.

Qian Haijuan continued: "Aggregate and slurry have an interdependent relationship, the ratio of slurry and aggregate, in different situations, sometimes the paddle body needs more, such as self-compacting concrete, sometimes more aggregates, such as RCC or large-volume concrete, the mix ratio design should always be cautious, grasp the heat, flexible use, specific situation is treated. Load or fall, the slurry can carry the aggregate flow, and has the effect of wrapping, carrying and bonding for the aggregate, and the aggregate can be evenly distributed in the concrete if the number of slurry is sufficient, and plays the role of the skeleton. Concrete with insufficient slurry quantity is prone to serious quality defects such as delamination and segregation, aggregate sinking, poor bonding, honeycomb surface and even dog holes in the concrete structure. ”

Li Ruoyu smiled: "Great, is there anything else?"

Qian Haijuan nodded and said: "Plug its exchange, close its door, frustrate its sharpness, solve its disputes, and its light, and its dust." It is said to be the same as Xuantong. The original meaning of this sentence refers to cultivating to the realm of fetal breathing, not breathing through the mouth and nose but using the navel or pores, completely abandoning the subjective thoughts and emotions that are not in line with the Tao, and everything is the law of nature. For concrete science, it should also be the case, that is, a concrete engineer must really stand in an objective perspective to understand, to study concrete technology, to gradually accumulate and deepen through experiments, not once and for all, to cover the whole, so as to make their subjective reflection conform to the objective law of things. In addition to the general methods such as observation, comparison, induction, reasoning, and generalization, specific professional methods such as analogy, modeling, and mathematical methods are also commonly used in the experiment. Foreign engineers design the concrete mix ratio according to the prediction model, which can enable people to eliminate the interference of secondary factors and achieve an idealized degree. This can be said to be a typical case of philosophy applied to engineering. ”

Li Ruoyu applauded: "Manager Qian said it so well, today is a vivid lesson for us! In fact, not only technical personnel, every position in the company, every employee, may as well learn a little philosophy, and be good at from a philosophical point of view, examine and think about all kinds of problems encountered in the work, so as to actively act in their own positions, everyone can promote the development of the enterprise in a good direction." Okay, Manager Qian, sit down first, let's return to the topic, this sand and gravel supply crisis, in fact, there are also profound reasons. Let's also analyze it from a philosophical point of view. ”

Bai Yurou thought for a while and said: "Ruoyu, don't say it, the relationship between us and the sand and gravel suppliers is really a kind of cooperation and like an enemy! This is like a war between two armies, we must know ourselves and each other, in order to win all battles, we don't have enough information about the suppliers! How did these suppliers join forces, and why do they want to raise prices? I'm afraid it's not just for more profits!"

Li Ruoyu nodded and said: "Sister Rou is right! Why do suppliers raise prices? Not only to get more profits, in fact, the deeper reason is that some sand and gravel suppliers, seeing that our concrete industry profits are amazing, want to open their own concrete batching plant, this is the deepest reason, so open a mixing plant, will become our competitors, they want to gain a foothold in the concrete industry, they must first suppress the concrete industry peers, get more right to speak." (To be continued.) )