Q:Housing construction, the sand, sand, sand and the relationship between the difference

Sand and sand are the key: the appearance and grain gradation; sand, natural, washed by water after the particles, the appearance of rounded, more clean, evenly ordered particles; sand, should be commonly known as the local, Its appearance is rough, with a large amount of mud, grain gradation thick; sand washing, the Department of sand: the appearance of rough, angular, and more containing more processing stone powder

Q:Who can help me out of a new building materials paper, thank you! 4000 words of the oh ..

From the functional points, there are wall materials, decorative materials, doors and windows materials, insulation materials, waterproof materials, bonding and sealing materials, and its supporting a variety of hardware, plastic parts and various auxiliary materials

Q:With the concrete pouring concrete, cement, gravel, gravel need to do raw materials check it

According to the national requirements of the ingredients used in the site must be sent to the test station detection.

Q:What kind of sand is the industrial license of building materials containing sand?

The use of sand is very broad: it is used in the construction, repair, filtration, farming landscaping, when the smelting of the quick-drying agent, or the manufacture of glass, the main material It contains silicon elements, in the daily life of factory workers wash their hands and feet of soap, cleaning wine bottles, porcelain, metal utensils, jade, silver, etc

Q:Construction of the total package unit reported commodity concrete raw materials to the supervision, should be attached to the mixing station to provide sand, stone, cement raw materials re-test report? Mixing station should provide sand, stone, cement raw materials re-test report? I personally think that although the mixing station bear the corresponding responsibility, but from the point of view of the former control that the right to require the request, because the mixing station issued by the concrete mix can not represent the qualified concrete raw materials, if the construction unit alone with the ratio of supervision can agree Construction, will lose prior control. However, the current construction process is a considerable part of the construction of a single Gong Fan wins both Yi-hui only sail bitter bit does not provide commercial concrete sand, stone, cement raw material testing report will be construction, please expert opinions? Thank you. More

The raw material inspection report is provided by the supply unit! The re-inspection report is sent from the site sampling inspection organization inspection test

Q:Extension of the abrasive wearable floor material how to construction? Need to pay attention to what the problem?

Concrete label is not less than C

Q:What is cracked mortar? What is the specific inside to participate in the material?

Anti-cracking mortar refers to the wall insulation energy-saving construction, in the insulation mortar construction, the application of a layer of anti-cracking effect of the special mortar, the general construction also need to add a layer of "alkali-resistant mesh cloth" Are the manufacturers produce finished products, in the field of mixing or ready to mix can be used. The main role is to prevent cracking and strengthen with the grass-roots storage pile stalk to fly the braids when the sowing the strength of the river, to prevent hollowing, delamination and surface layer (such as tiles) bonding is not strong, off and so on.

Q:[Class 2 construction division -> Water conservancy and hydropower] Building materials according to their functional use can be divided into (). A. Structural material B. Waterproof material C. Gelling material Natural building materials Decorative materials

waterproof material Such as waterproof mortar, waterproof concrete, copper water seal, expansion cement waterproof concrete cementitious materials Such as gypsum, lime, water glass, cement, asphalt and so on decorative materials Such as natural stone, building ceramic products, decorative glass products, decorative mortar, decorative cement, plastic products protective material Such as steel cladding, wharf and so on insulation materials Such as asbestos board, slag cotton, foam concrete, foam glass, fiberboard and so on Building materials are sorted by their source Natural building materials Such as commonly used soil materials, gravel material, wood and so on artificial materials Such as lime, cement, metal materials, geosynthetics, polymer and the like Therefore, this question should be selected A, B, C, E ,

Q:Why the sand can not replace the river sand to do building materials

Mountain sand because of the rough surface, so the cement attachment effect is good, but the mountain sand composition is complex, most contain soil and other organic impurities. Therefore, the general decoration works, are recommended to use the river sand. River sand surface roughness moderate, and more clean, with less impurities. Generally from the market to buy back the sand have to use the net to filter before use.

Q:My house wall out of sand powerful, what is the method of governance?

Brush a layer of latex paint outside the wall.