Recently, some netizens posted a message on social platforms: "The consequences of sprinkling salt in the yard after the snow, now the snow has melted and dried up, but the cement bricks in the yard have become like this, is the quality of my cement bricks not good?" Or is this cement brick afraid of sprinkling salt? According to the picture of the news, there are many potholes on the cement brick surface, which has caused heated discussions.
Potholes appear on the road surface after the snow is sprinkled with salt
Professionals believe that there are a variety of reasons
On the afternoon of February 6, the reporter sent a private message to the netizen who posted the news. Whether it is a private message or a message in the comment area, as of press time, no relevant reply has been received from the netizen.
What are the causes of these potholes? The voices in the comment section are different. Some netizens think that the cement brick freezes and then melts and swells after absorbing water; Some netizens also believe that the bricks were frozen after repeated freezing and thawing without clearing the snow in time; Some netizens believe that it is due to the corrosiveness of salt.
In this regard, the reporter consulted relevant insiders in the construction industry in Jinan City, and its analysis may be that after the salt is dissolved in water and enters the cement inside, with the evaporation of water, the salt will remain inside the structure. This part of the salt expands and cracks the hardened cement.
Salt is corrosive, but generally does not have an immediate corrosive effect. In this regard, the relevant person in charge of the Jinan Machine Sweeping Brigade believes that this kind of situation does not rule out that the salt is mixed with some other chemicals.
Picture of the online message).
At the same time, the industry insider mentioned that it is also possible that the cement brick is poured on site, and the top layer of brick surface is relatively loose due to more water, and there will be potholes on the road surface in the process of clearing snow. He also mentioned that this may not be the case if the cement bricks were prefabricated products, "but because of the salt, it is difficult to define who it is".
Snow melting agent manufacturers:
It's okay to use occasionally, and it generally won't corrode the road surface
In the comments on the message, some netizens suspected that it was the effect of the snow melting agent. The above-mentioned industry insiders said that those snow melting agents whose main ingredient is salt will have an impact on the pavement of cement concrete, and the cement may swell and crack.
on the Internet).
According to the relevant ** report, according to the analysis of professional testing units, the main materials of municipal facilities are asphalt, cement, sand and gravel, and chloride salt snowmelt materials will reduce the strength of the road surface, and accelerate the freezing expansion and thawing contraction rate after snow mixing, resulting in freeze-thaw damage such as cracks and potholes. As the snow freezes and thaws, the melt material penetrates with the snow water, causing cracks in the road to widen and potholes to form after repeated crushing of vehicles.
The reporter consulted a snow melting agent sales factory as a buyer. According to the staff of the factory, the snow melting agent mainly includes ordinary salt ball snow melting agent, chlorine-free fixed snow melting agent, liquid snow melting agent and calcium chloride magnesium chloride snow melting agent. "It's okay to use the snow melt once in a while. The staff member said that snow melting agents such as salt, which are mainly ingredient, will cause some corrosion on the road, but the impact is not significant, let alone causing potholes on the road.
Jinan City Machine Sweeping Brigade:
The use of environmentally friendly snow melting agent all year round will not cause potholes on the road
Recently, heavy snowfall has frequently visited Jinan. After a heavy snowfall, the snow on the road is quickly cleared, and snow melting agents are indispensable among them. What are these types of snow melting agents and will they affect the road?
Jinan City has used environmentally friendly snow melting agents for many years, and these snow melting agents have been tested by relevant agencies and will not cause potholes and other problems on the road. The relevant person in charge of the Jinan Machine Sweeping Brigade said that the environmentally friendly snow melting agent may retain the characteristics of snow melting and anti-icing.
The amount of snow melting agent used is related to the snow conditions, and the purpose of using it is to prevent the road from icing. According to the relevant person in charge, the amount of snow melting agent is related to factors such as temperature, humidity, and snowfall. "This way the snow melt spreads more evenly and the snow melts faster. ”
*: Qilu One Point.