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Chapter XXI Sensory Biases are Proven Only in Practice

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    When it is small to a certain extent, this place turns around. I heard that this is a typical characteristic of plastic material damage. One of the values ??is inside, but a section shrinks to a certain extent, which is what we just said.  Typical elasticity, strengthening then there is another concept, just to bear the maximum, this is what we call Camacho.  It is what I said just now when I broke off is the biggest.  Yield strength and tensile strength are very good in this picture.  That!  Then we are talking about a concept called generals.  It must be the measured value of the strength of the cara.  The actual measurement of the above yield strength.  That is to say, when using cmd, it is better than when using cf.  This time we call it strong, because we think the endurance limit just now, but there is still a lot of room for him to exercise. The larger the space, the better the steel safety reserve will be. We require that it must be required by our regulations.  Approximately equal to how much.  1.25 That is the notion of distinction, and that is what our article means.  This is the ratio of the measured tensile strength to yield strength.  What's the meaning?  Is the measured value of yield strength?  than the standard yield strength.  It's like the difference between reality and theory is too big.  They try to get as close as possible, the closer the better, this is what we should do with these two words according to our regulations, less than or equal to.  Must pass.  The ratio of all eigenvalues ??specified in Clause 2 cannot exceed one point.  After pulling just now, it is impossible to return to the original state.  Use the length of the sample after you produce, and multiply by 100%.  The greater the elongation, the harder the extensibility, the better, which means that it is different.  This is our stated maximum.  What is the indicator of steel according to the description?  plastic index.  The bigger the word, the better.  The three resistances are tensile impact fatigue, tensile properties, and what indicators are used to evaluate the reliability of steel?  What is the plasticity of steel? How to express the number by elongation, the bigger the better?  What is the eligibility criteria?  Critical temperature?  At that time, we also had to consider the impact, what is fatigue, repeated over and over again.  Just at the foot, the understanding of this picture and these three situations can judge the case.  Even if it is strong, it will be counted.  hrb4 version.  Well, let us tell you about the strength of steel, which means shrb335, hrb.  hrbhhpb is hotter.  Hot rolled smooth round steel bar.  300 hp.  standard value.  Greater than the standard of =300=328=300.  For this grade of steel, because it is smooth, so this kind of steel and concrete.  I use it for attacks.  strong enough.  And wall panels.  Or let me count these kinds.  hrb335hrb4hr hot rolled.  Back rib reinforcement.  That is what we commonly call this, that is, our secondary steel symbol is this.  It is the third-grade steel in our current market, with two slashes.  It's not like this.  Level 1, Level 2, Level 3, Level 4, we now mainly use level 2 and level 3 steel, the direction of stress of beams and columns.  It was also in the book the man was looking for.  The strength of the steel must be degraded at high speed, and it is mainly used for.  This question should be selected.  550, the total elongation of the maximum force is 10%, the following statement is correct, right?  If you want to compare who you are, you must use 550 or more than 420 last time, which is equal to 1.305.  So if you say you are qualified or not, you are qualified.  The measured yield strength is sufficient to tame the strength criterion of 1.0.  The percentage is greater than 9%.  The lower the temperature value of the three-grade steel is mainly used for the stressed steel bars acting on the components, it shows the style of this sentence just said.  What I can't see in many test centers is my own.  Well, let's take a look at the second content. Cement was also an exam question at that time. Everyone knows the names of the six major cements, Portland cement.  volcanic ash.  18 years also have officials, not longer than 6.5 other cement.  So here he has to judge whether he is qualified or not.  If something goes out of order.  What level is this cement nail?  The better the uniformity of the volume change of the cement during the setting and hardening process, the higher it will be, and the expansion series must be caused.  Do you want to open some cement nails with unqualified stability?  It must be right to fail the stability.  What is the original cause?  There is too much calcium oxide and magnesium oxide in the clinker of cement, and what is called alkaline oxide, calcium oxide, when it meets water, it will react chemically in the corner of the wall.  What's more important is physical strength.  There must have been a strategy back then.  The main thing is for everyone to master the strength of cement. The strength of cement is generally measured by his method. The three-day and 28-day compression and resistance are 32.5, 42.5, 52.5, and 62.5, which are generally more than 4,000 yuan.  32.5-42.552.56.  So the most important thing for everyone at that time was to call it high hot water.  You can see that the height is fast, the early strength is high, the frost resistance is good, and the corrosion resistance is relatively strong.  Brother-in-law now that's our first two types of cement slag volcanoes.  The low-heat cement and the high-level water tank have relatively low strength and poor frost resistance, but what is his signal?  What are your characteristics?  In addition, there are two types of classes here, and the two types of cement are very special.  Expand and expand the internal heating type of cement.  (Remember this site URL: www.hlnovel.com
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