Small market to pay more attention
Brand building materials supermarket cement sand brand is more single, there is no room for bargaining, and the building materials market sales of building materials to the wholesale, the type is relatively rich, the price is not only cheap but also to discuss. From the brand type and price point alone, the ordinary building materials market may become your first choice. However, from the point of view of the reporter’s visit, although the supermarket price is high, it is clearly marked and the quality is guaranteed. Even if something goes wrong, you can make a complaint. While the small market price is cheap, you will bear the corresponding risk, so it is recommended that you buy cement sand at the brand building materials supermarket.
If you are still willing to buy in the ordinary building materials market, we suggest that you first put a question mark in the following three areas: First, the amount of cement sand is insufficient. At the time of your inquiry, the other party may tell you about the price of 50 kg of cement, and the delivery may be 40 kg of cement. The second is whether the type of cement sand meets your expectations. Home decoration usually uses ordinary Portland cement, but the merchant may give you other types of cement, such as slag cement. Third, cement sand is not genuine. For consumers who do not have professional knowledge, it is difficult to identify authenticity. You can bring experts who are knowledgeable to accompany you.
Call before departure
Many consumers take for granted that the building materials market has cement sand to sell, but it is not. Whether it is building materials wholesale market, or brand stores, there is no possibility of cement sand, such as building materials supply station (Huaxiang shop), Red Star Macalon and so on. And even if it is a store of the same brand, the situation of different stores is not the same. Some storefronts may have, and some storefronts may not. If Shirihe Store is actually homeless with cement sand, its North Fourth Ring Store sells cement sand. Therefore, we suggest that you make a phone call to confirm before you leave, so as not to make a mistake. In addition, some of the building materials market is located in a remote location, inconvenient transportation, but also difficult to find, it is best to check out the specific location before departure, so as to avoid unnecessary trouble.
Seeing your hands touch your favorite materials
How can we pick the real cement sand in a mixed market? Don't worry, see what the experts say.
Question one: What kind of cement sand is used in home improvement?
Cement - commonly used cement is classified into 5 types of Portland cement, ordinary portland cement, slag cement, pozzolan cement, and fly ash cement. In the home improvement process, ordinary Portland cement is generally used, and the industry is also called ordinary cement.
According to different strengths, ordinary cement is divided into multiple numbers. Generally, the higher the number, the higher the strength. However, the higher the number does not mean that the better, different projects apply different grade (strength) of cement. For example, if you use an excessively high number of cement when laying tiles, it may cause emptying or even cracking of the tiles. Home interior decoration works usually use the cement labeled 32.5.
Sand - Cement can only be used after blending a certain amount of sand and turning it into cement mortar. The industry usually divides sand into four types: fine sand, fine sand, medium sand, and coarse sand according to specifications. In general, the thicker the sand, the higher the strength of the formulated cement mortar, but if the strength is too high, it will affect the quality of the project, such as cracking the surface leveled with high-strength cement mortar. Home improvement sand is recommended.
Question two: How to identify cement sand?
Cement - When you buy cement, you should start with the appearance, information, reports, and feel.
The appearance looks at the appearance of the cement and its packaging quality. High-quality cement should be gray and white, and generally use moisture-resistant and non-breakable internal film packaging bags; poor quality cement tends to be rough and easily cause moisture to agglomerate. Too much or too much color of the cement indicates too much impurities.
Information refers to the various signs and information on the cement packaging. Cement produced by regular manufacturers should be marked with registered trademarks, origin, production license number, implementation standards, packaging date, bag net weight, factory number, cement varieties, etc., with clear writing and complete content; inferior cement is often deliberately omitted some content, The information on the packaging is also often blurred. If you are not confident about the cement you have purchased, you can also call the manufacturer's phone provided on the package and ask the manufacturer to help identify it.
The report refers to the manufacturer's test report. Consumers can ask the salesman directly and use the inspection report to judge the quality of the cement. In general, the test report will give the identification results of various performance indicators such as cement strength.
In addition to the above method, consumers can also check the quality of cement by their hand. High-quality cement particles are delicate; poor-quality products are rough in hand, and have low strength and poor viscosity when used.
Sand - The need to remind consumers in particular is to be alert to unscrupulous traders Li Daitao, such as sand instead of China Sand, and sea sand instead of natural sand or river sand. Although the sea sand is clean, the salt content is high and the alkali is large, which will have a great impact on the quality of the project. Therefore, the use of sea sand in building decoration is strictly prohibited by the state. If you want to tell whether you bought Haisha, you can see if there is a tiny marine creature shell in the sand.
In addition, whether it is natural sand or river sand, it can be used after buying it back and filtering it again. Of course, there are also sands that have already been screened in the market, but the price is about 1/3 higher. You can choose according to your economic affordability.
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