After the end of the confession is about half past ten, the plumbers and pumpers will take the first step, the pump pipe and pump machine are pulled to the construction site, this takeover is not complicated, mainly a few meters down to pump concrete, the length of the pipeline is only about 150 meters, but in the pumping process need to keep dismantling and connecting, and the boom pump will save trouble, directly to the predetermined location to stop, four legs stretched, ready to prepare. Pen ~ Fun ~ Pavilion www.biquge.info 【】

At twelve o'clock at noon, the pumpers also connected the pipeline, and the other party also made preparations for pouring concrete, Zhongsheng building materials here production scheduling and construction convenience to contact good, at 12:30 began to ship, from the mixing plant to the construction site takes about 40 minutes, eight cars of concrete are shipped per hour, each car 6 cubic meters, so that an hour is 48 cubic meters, of course, it depends on the pouring speed, the speed of shipment and the speed of pouring must match, otherwise there will be on-site pressure or material breakage, Of course, this is all mastered by production scheduling.

On the side of the laboratory, Li Liangfeng is also ready, and now there are a few newcomers in the laboratory, he doesn't need to work hard, he only needs to command the newcomers.

Now he began to issue a mix notice, now the information of the mixing plant is not good enough, can not directly transmit the mix through the system, so you need to manually fill in the mix ratio, and then you also need to calculate, the moisture content of the fundamental sand and gravel to calculate the actual production of the mix ratio, and then the operator of the mixing building will enter the mix ratio into the industrial control computer, so that it can be produced.

Of course, calculating the production mix ratio is not complicated, and even elementary school students can learn it, as long as they choose the mix ratio well, they can't make mistakes. Of course, sometimes it is necessary to make small adjustments according to the situation of raw materials, for example, the sand in today's material yard is coarser than that used in the match test, so it is necessary to appropriately increase the sand rate, and if the sand is fine, the sand rate should be appropriately reduced.

Li Liangfeng opened a notice of the mix ratio after dividing five by two, and then took it to Qin Haijuan, the director of the laboratory, to sign it.

Qin Haijuan looked at Li Liangfeng's mix ratio, and said with a smile: "Li Liangfeng, is there any basis for your adjustment of the sand rate?" ”

Li Liangfeng thought to himself, am I not adjusting correctly? After thinking about it, he replied: "I went to the pile in the morning to take a look, and our sand is relatively coarse now, so I increased the sand rate by one percentage point." “

Qin Haijuan smiled and said, "How thick is a little rough?" I don't think you're doing experiments, are you? Everything we do with technology must have a basis, and things like this kind of mix adjustment can't be based on feelings alone. We have to figure out what the fineness modulus of the sand is before adjusting, but visual inspection is sometimes not accurate, especially if we are a new company and you are all newcomers. Tell me what is the fineness modulus of the sand you visually inspected? ”

Li Liangfeng thought for a while and said, "I guess how can there be more than 2.8, right?" ”

Qin Haijuan smiled and said: "But I also went to see it, I only had a visual inspection of 2.6, if I don't believe it, let's do it again." ”

Li Liangfeng said embarrassedly: "Okay, Director Qin is definitely better than me, but I think it is better to have data, if it is like what Director Qin said, then there is no need to adjust the sand rate in this mix." ”

Qin Haijuan stood up and said, "Okay, let's go take samples and do the test together." ”

Fortunately, it doesn't take a few minutes to detect the fineness modulus of a sand, and there is still time, otherwise Qin Haijuan will directly modify the mix ratio, but she wants all technicians to understand one thing, that is, technical work must be rigorous and not too casual.

With two newcomers, Qin Haijuan and Li Liangfeng came to the sand and gravel yard at the back, of course, the sampling is also particular, just to teach the newcomers.

Li Liangfeng shouted: "Xiao Liu, Xiao Zhang, the two of you find twelve points from this sand pile, take one kilogram of sand each, mix them together, and then shrink it into three kilograms of samples according to the standard reduction method, and then we will take it back to the laboratory and fry it dry, and then sieve it." ”

The two newcomers are also secondary school students at Huhai Architectural Technology School, and they hurriedly followed Li Liangfeng's requirements when they heard this, and now Li Liangfeng is their master.

The two of them found twelve points on the sand pile, and because the sand was soft, there was a lot of sand in their shoes, but fortunately, they finally completed the task successfully.

Fractionation is also simple, that is, spread the pie, then divide it into four parts, take two of the diagonal parts, and then repeat, the purpose of this is, of course, to make the sample more representative. After all, if you really take a sample from a certain part of the pile, it is not representative, because the sand on the pile is not uniform.

Sometimes, even if the sand is pumped from the same place, the same boat of sand is not necessarily uniform. Therefore, the sample with multiple points and then reduced is more representative.

After the sample was shrunk, everyone returned to the laboratory.

At this time, the fried sand was also particular, and the two newcomers did not pay attention to the details of the standard, and poured more than two kilograms of sand directly into the wok, wanting to fry it dry at one time, and then weigh the specified weight for testing.

Li Liangfeng hurriedly stopped them: "Hey, I said Xiao Zhang, Xiao Liu, didn't I tell you?" After the sample of this sand is retrieved, there are a few points to pay attention to. Our screening test is to be done twice, and the test results are averaged, but this wet sand is fried carefully. We have to take about 550 grams of wet sand first, fry them separately, and then take 500 grams of fried dry ones for each part and pour them into a sieve for screening. To be like you, the accuracy of the test results is very poor. Think about it, if more than two kilograms of sand are fried and dried, and then you take dry sand to weigh, is it easy to cause uneven samples, so it is possible that the results of two tests exceed the standard of 0.20, which is equivalent to an invalid test. The standard stipulates that it is reasonable, and the sand is not easy to separate when it is wet, so it is relatively uniform. Director Qin, right? ”

After speaking, Li Liangfeng looked at Qin Haijuan.

Qin Haijuan nodded and said, "That's right, Li Liangfeng, there is progress, take them out well, everyone will make progress in the future." ”

Li Liangfeng knew what Qin Haijuan meant, and when the company developed and expanded, and opened a chain mixing plant, he couldn't say that he, a veteran technician, would become the director of the laboratory or something, and the income and treatment would naturally be different.

Even if it is a few newcomers, there is a lot of opportunity, after all, the concrete batching plant is an emerging industry, they can be regarded as a very early entry into the industry, seize the opportunity to go to the next level, the newcomers also understand this truth, one by one is as excited as chicken blood. (To be continued.) )