Home decoration is a common and common event in ordinary people's life. However, as a “basic skin care product†to create a family living space, the status of home improvement cement is not optimistic: products are varied, quality is uneven, and shortages of short and two phenomena occur from time to time.... Once a customer purchases inferior cement, it not only affects the housing. The quality of the decoration will also pose a serious threat to human health. So, what kind of cement is a qualified product? How can consumers scientifically choose high-quality "home-based basic skin care products" - cement?
Runtai Decoration    Leiyang Decoration     Green fir decoration
"Look, smell, ask, cut" - buy cement four steps
Different standards of cement, quality and scope of application are different, in the face of a wide variety of mixed fish and dragons home improvement cement products, the average consumer is difficult to accurately identify. Therefore, the reporter learned from an interview with relevant experts of the world's largest cement manufacturer, France Lafarge, that the cement selection is like a traditional Chinese medicine practitioner, and it is necessary to go step by step. The safest way is to choose the products of regular manufacturers.
The first step: "look at" mud known good and bad First of all, from the appearance of the packaging quality. To see if the use of a damp-proof performance is not easy to damage the laminating woven bags to see if the logo is clear and complete. In general, the cement produced by regular manufacturers should be marked with the following contents: registered trademarks, place of origin, production license number, implementation standards, packaging date, bag net weight, factory number, and cement varieties. However, poor quality cement is often unknown.
Second, carefully observe the color of the cement. In general, the normal color of cement should be grayish, and the color is too deep or there may be too much other impurities.
The second step: "smell" muddy quality The smell here is not a smell. After all, it is unsafe for cement to smell to the consumer. Here the "smell" is "hear" and listen to the introduction of the ingredients of cement, so as to infer the cement. Quality. At present, some small cement plants in China have used cement mixing materials in excess of cement standards in order to carry out low-priced sales, and have not strictly followed the national standards to match the raw materials. The performance of their products can be imagined. The regular manufacturers are very rigorous in the selection of raw materials for cement. For example, Lafarge's home-improved cement uses the highest quality limestone in North China as raw material. It not only has stable chemical composition, but also has a high content of effective components. The cement produced has a setting time. Moderate, high bonding strength, good durability. At the same time, Lafarge also produced raw materials in strict accordance with national standards. Through strict quality control systems, the products conformed to the ISO9000 standard. The four tests of antimony, radioactive materials, chloride ions, and alkalis were all superior to the national standards.
The third step: “Asking†the source of mud is mainly to inquire the manufacturer and production process of cement to see if its “origin†is formal and whether the production process is advanced. At present, the cement products on the building materials decoration market are mostly produced by the small vertical kiln process. Not only the product quality is very unstable, but also the enemies of environmental protection; and some professional large plants adopt the new dry process rotary kiln production and adopt advanced computer technology control. Management can ensure the stability of the cement product quality. For example, the world’s largest cement manufacturer, Lafarge Cement, was produced using a five-stage low-heat-consumption kiln-extracting kiln with tertiary air and a closed loop cement mill system equipped with a modern cyclone separator. The high quality of cement products.
Step 4: “Cut†the life of the mud The main step is to use the fingers to give the cement a “pulse†and identify the length of time it takes to leave the factory. Cement also has a shelf life. In general, the strength of cement that exceeds the delivery date of 30 days will decrease. After three months of storage, the strength of cement decreased by 10%-20%, decreased by 15%-30% after six months, and decreased by 25%-40% after one year. The cement that can be used normally should not be subject to damp and agglomerate, and the high-quality cement should be cement powdered with a finger and feel fine grained. Packing of poor quality cement will result in moisture and agglomeration of the opening inspection. The inferior cement is cemented with fingers and has a rough feel. This indicates that the fineness of the cement is coarse and abnormal, and the strength of the cement is low and its viscosity is poor.
Choosing good cement for cement
After completing the “four steps†of buying cement, qualified cement products with good quality, health and environmental protection can finally be taken home with confidence. However, does this mean that you have already done it? Not! Lafarge experts also reminded consumers that after the correct selection of qualified cement, they must also use the correct method of use in order to enable these high-quality cement products to perform their intended functions.
In this regard, the experts made the following recommendations:
First, pay attention to the reasonable ratio of mortar. For example, it is advisable to select the appropriate proportion of mortar according to the parts used, such as wall-witting, affixing bricks, and affixing wall tiles, and it is advisable to mix the good mortar each time in two hours.
Second, the use of special sand mortar for building materials market, in particular to control the quality of sand containing mud, high mud content will reduce the degree of adhesion.
Third, the tiles should be fully immersed before use (more than 2 hours) dried, to avoid mortar due to water loss to reduce strength; floor tiles should use dry shop, wall tiles should be wet shop.
Fourth, the mortar should be mixed evenly. It is recommended to use it within 2 hours and 30 minutes after mixing the mortar.
Through the introduction of experts, we have found that it is not difficult to use good cement as long as you have the right method. With the advice of experts, I believe that more consumers will polish their eyes when they are decorating, and really buy high-quality, high-performance cement products, so that the warm home environment is stronger, safer, more environmentally friendly, and healthier.
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