Chapter 378: Cement or Asphalt

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The concrete-paved Lincoln Highway was built, and long-distance road trips were popular, but soon complaints returned.

It turned out that although the road surface of Lincoln Highway was smooth, the supporting facilities along the way did not keep up.

Due to the fact that many sections of the road were built by local residents, the path was changed, resulting in many errors and omissions in the road map;

The road signs, street lights, rest rooms, and gas stations along the route are also in unsatisfactory condition.

These omissions led to a significant reduction in the travel experience for early self-drive tourists.

And, while the trail is well received, not everyone along the way welcomes it.

Wyoming herders are in dire straits, as their livestock have been hit and killed by vehicles since the road was built.

Over time, disgust with the highway spread through farm-strewn southern Wyoming, and some grumpy cowboys even began threatening passing cars with guns.

To alleviate this conflict, the Wyoming government built barbed wire to protect the farms, but it also caused inconvenience to passing vehicles, as drivers had to stop and open and close the barbed wire gates every time they crossed a farm.

On the road from Cheyenne to Rollins, drivers even had to stop and open the farm gate more than two dozen times.

As a result, people have come to the conclusion that highways still need unified planning and management by the state government and the federal government in order for them to be most effective.

As a result, the country established the official federation of highways and transportation, and began to plan the highway transportation system in a unified manner.

For this new system, the Federation decided to use numbers for numbering.

This is because, until then, there was no uniform standard for the naming of long-distance roads.

The Lincoln Highway was recognized by everyone and did not run into trouble, and many of the roads that were built afterwards were called by different names in different cities even though they were the same road.

For example, the aforementioned Wendorover Highway is also called Victory Highway by many people;

Some roads are obviously not the same road, but they are named the same name for the same gimmick, for example, there are several roads leading to the southern hinterland (traditionally called Dixieland) called the Dixie Highway.

Such a name can easily mislead pedestrians. If all roads across the country were numbered according to the same system, this confusion would be reduced.

In this way, the country of Chou announced a new highway numbering rule.

Several arterial routes built or planned in the east-west direction are set at multiples of 10, from the northernmost Route 10 to the southernmost Route 90.

The main roads in the north-south direction are numbered with a mantissa of 1 or 5, with the first north-south main line on the Atlantic coast being Route 1 and the last north-south main line on the west coast being Route 101.

The remaining non-mainline roads are numbered according to the rule that the north-south direction is odd, the east-west direction is even, and the number increases from east to west and north to south (with a few exceptions).

This was the birth of the U.S. National Highway System, one of the two major national highway systems in the U.S.

With the birth of the Chouguo Numbered Highway System, long-distance highways began to be built throughout the country, and each state successively had a planning system and numbering rules for state-level roads.

As a result, enthusiasm for the Lincoln Highway has been greatly diminished. Because the route planning of the Lincoln Highway was not very reasonable, it quickly declined in competition with the National Highway of the Ugly Country.

And some sections of the road that are really unreasonable have either been rebuilt or abandoned.

The two main founders of the Lincoln Highway, Joy and Fisher, both made great profits when the Lincoln Highway was built, and they went on to achieve great things individually.

Joey buys a crumbling car business, which under his careful management has grown into the luxury car brand Packard.

In his later years, he entered politics and made a great contribution to the abolition of Prohibition in the ugly country.

Fisher later developed the Dixie Highway, which runs north-south through the country, and planned and developed what would become Miami for a small city at the end of the road, in a marsh by the sea.

The road he used to test cars in Indianapolis was later used on the track for motor racing and developed into the famous Indy 500 (Indy 500, one of the world's top three motor races, along with the Monaco Grand Prix and Le Mans).

After being hit by the Great Depression of the 1930s, he began to care about the lives of the poor, establishing the famous Caribbean Club on a small island in Florida, which became a refuge for the homeless.

In the 1940s, the Lincoln Highway was dead, but cars became an integral part of the lives of the ugly people.

Although the Lincoln Highway has only existed for more than two decades, it has fundamentally changed the way Americans travel and live.

The chain reaction triggered by it has allowed the country to have a national highway system, which has greatly improved the transportation of the western states of the country, and thus brought about earth-shaking changes in the economy and social culture of the western region.

Los Angeles, Reno, Cheyenne and other small cities have developed into major cities in the west under the influence of the Lincoln Highway and the subsequent Ugly National Highway. The culture of road trips and the rise of the gaming industry in Nevada, including later Las Vegas, also contributed to the emergence of these roads.

The question of whether Highway 1 should be a cement or asphalt road has not been effectively resolved after many meetings.

Li Yaoyang Ken is not qualified to participate in the entire Highway 1 project, he is only a contractor for a certain section of the road, no, one of the contractors.

Whether to use cement or asphalt roads, it is not his turn to express his opinion.

But he himself actually prefers cement roads, for a simple reason - cheap, durable, easy to take care of, to use a more vulgar analogy, this is like a woman with a good figure, average background, and ordinary appearance.

Although the slots are full of points, they are people who live a real life, and there are no moths.

And the asphalt road is equivalent to the young lady in the clubhouse, beautiful is beautiful, and she knows how to please men, can she marry home?

How big does your heart have to be to marry home?

For another example, when a person who is living at home goes to the vegetable market to buy vegetables, is it to buy the kind of vegetables that look ugly but are cheap, or the kind of vegetables that are slippery and slippery on the surface, and at first glance they are grown in greenhouses without wind and rain, and the price is very expensive and tasteless?

But anyone who knows a little bit about life knows how to choose.

To go into more detail, the simple steps for the construction of asphalt roads are to make cushions, base layers and surface layers.

Depending on the load-bearing capacity of the pavement, the thickness of each layer is also different.

The cushion is to remove the bottom layer of garbage soil, humus and other soil that is not suitable for the foundation, and replace it with loose granular materials such as coarse sand, gravel, cinder, etc., and then fill the base layer with graded sand and gravel and other fillers with strong compressive ability, and the thickness will generally be about 20cm or more.

After that, it is compacted and leveled with a roller, and finally poured through the layer of oil, and the top surface layer after paving is the smooth and smooth road surface that we often see.

When asphalt paving the road, it is generally necessary to work together with the material truck, the paver and the roller.

The paving temperature is between 130-140 degrees, and the boundary needs to be manually processed and paved in time to avoid waste.

Where the road width is less than the width of the paver, manual paving is required.

Of course, this problem does not exist in the ugly country, because the large area of open space and plains is enough for the roller to work.

If it is similar to the kind of village streets and lanes in rural China, most of the roads are wide and narrow, and there are many turns, and it is difficult for large machinery to enter.

If all the paving is done manually, it is also time-consuming and labor-intensive.

And the paving of asphalt oil has certain requirements for temperature, once it is too late to pave, the temperature of asphalt oil is lower than the specified temperature, it will condense into lumps, and it will be all wasted.

In general, the width of the pavement is less than 2 meters, and it is more convenient and practical to make cement pavement.

The paving of cement pavement is relatively more practical and easier to do

First of all, according to the site situation, the bottom subgrade is treated, and the site is leveled and compacted with a road roller, or manually vibrated and tamped.

Then do the surface layer, formwork and concrete vibrating. Now you don't have to mix it yourself, and it is very convenient to buy commercial concrete.

After scraping, it should be maintained in time according to the specifications, cut the seams, and finally let go of traffic after meeting the requirements.

Compared with asphalt pavement, cement pavement is relatively simple to build, and there are no such strict temperature requirements, which is relatively easy to operate.

In addition, if the asphalt pavement is not paved with curb bricks on both sides, the pavement is easily damaged, while the cement pavement is relatively much stronger.

This is a lot of money for a project that is tight on budget.

Asphalt pavement is a flexible pavement that softens when the temperature is high in summer, while cement pavement is a rigid pavement and is relatively much more durable and durable.

In general, cement pavement has a much longer lifespan, reaching 30-40 years, while asphalt pavement is only about 12 years.

Whether from the perspective of actual cost or later maintenance cost, cement road is the best choice.

Of course, in the long run, asphalt roads still have a greater advantage, especially after the sharp increase in car ownership.

It's not just the number of cars that are growing, it's also the load of cars.

Although the bearing capacity of the cement pavement is quite high, it cannot bear it in the face of cars with increasing loads, especially some truck drivers, who choose to overload in order to make more profits, which is irreversible damage to the cement pavement.

Once the load of the car exceeds the critical value of the cement pavement, the cement pavement will burst, and even a whole piece of cement pavement will form a warp or depression, which will bring huge safety hazards to other vehicles.

However, for asphalt pavement, it is a flexible pavement, and it will sink down when the pressure is high, and it will slowly recover when the vehicle passes quickly.

With the advancement of technology, the construction of an asphalt highway is likely to be completed in one night, and even vehicles can pass at the same time as the construction, as long as the fence in a small area can continue construction.

For the cement pavement, it needs to be poured with cement, and the corresponding mold support must be played, and the cement transfer vehicle can be transported back and forth to be able to lay the cement pavement successfully.

However, this does not mean that the cement pavement can be directly opened to traffic, and it also needs corresponding maintenance, surface covering, and corresponding cutting after a period of water spray maintenance.

It takes about a month to build a section of concrete pavement and open to traffic.

During this period, the cement pavement is not allowed to open to traffic, 4 lanes into three lanes, two lanes into one lane, which is bound to cause a certain amount of traffic congestion.

The paving of asphalt pavement is more simple and convenient, several rollers and an asphalt, laying machine, as long as you drive while walking, a complete asphalt road will be paved, and it can be opened to traffic in a few hours.

After the technology matures, whether it is in terms of manpower or material resources, the laying of asphalt roads is simpler.

In addition, the cement pavement must be cut one by one, otherwise it is easy to expand and shrink in hot weather, forming a huge arch, thus causing potential safety hazards.

However, after cutting, the cement pavement, although the cutting joints are filled with asphalt, still have relative bumps and produce a certain amount of noise when driving.

The asphalt pavement is laid directly in one piece, and there is no need to cut the corresponding expansion joints.

Then its coherence and comfort are much better when driving, especially its flexible road surface can reduce the noise generated during driving.

Another point is that the asphalt pavement is much stronger than the cement pavement, especially in rainy days, if the cement pavement is too smooth, it will slip, so the construction of the cement pavement needs to be anti-skid.

However, with the increase of use, the anti-skid lines will also be filled with mud and other debris, so the anti-skid of the cement pavement is not as good as the asphalt pavement, and the driving is not so stable.

Although the cement road has a longer life and lower maintenance cost on the surface, it will one day be cracked and damaged, and its maintenance will be more troublesome, and it needs to be knocked out and repaired again.

After repairing, it is necessary to maintain this piece of pavement, which is relatively troublesome.

In addition, when the entire cement road is repaired and maintained, it cannot be directly used as a foundation, and it needs to be broken and knocked out before it can be used.

Even when many cement pavements are rebuilt, the original pavement needs to be broken, cut, and moved.

Compared with asphalt pavement, asphalt is a renewable resource, and its maintenance is also more simple and convenient.

If some potholes appear, only a small part needs to be simply cleaned, filled, flattened and restored.

If the entire section of asphalt road is to be repaired, then it is only necessary to melt the surface of the asphalt road with a flame and then re-lay the asphalt with another layer to complete the work.

Relatively speaking, the maintenance of asphalt pavement does not exist, it is wasted, and all materials can continue to be used, and the corresponding construction waste will not be generated.

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