In building materials, we must use cement for decoration. Do not look at cement. Workers are only using it. As homeowners, we should also understand the common sense of cement use.
Conch Cement    Fuhuai Stone
1, avoid the grassroots dirty
The cement can be firmly bonded or gripped with a hard, clean base, but the bond grip strength is related to the smoothness of the base face. Because hydration requires only about 20% of the cement's weight, excess water will leave a lot of pores in the concrete after evaporation, which will reduce the concrete's strength. As a result, the concrete or plaster layer is gradually eroded and disintegrated, so that the cement is not attacked by acid. In the smooth construction of the grass-roots level, it is necessary to brush the net of ramie in advance so that the cement can be held together with the base layer.
2, avoid water thick gray
Sometimes the effect of water consumption on the strength of concrete is often neglected. In order to facilitate the pouring of concrete during construction, the mix ratio is sometimes not properly implemented, and the concrete is mixed very thinly.
3, avoid negative temperature and freezing
After the concrete or mortar is mixed, if it is frozen, its cement cannot be hydrated, and the moisture icing expands, and the concrete or mortar will be damaged by powder and cracks gradually deepened from the surface and inside, so the construction must be performed as required. So, what are the taboos for home decoration cement?
4, avoid moisture knot hard
Cement that is hardened by moisture will reduce or even lose its original strength. Therefore, the cement shall be re-examined and tested according to the specifications.
5, avoid aggregate impure
As gravel for concrete or cement mortar aggregates, if there is dust, clay or other organic impurities, it will affect the bond strength between cement and sand, stone, and ultimately reduce the compressive strength.
6. Avoid acid attack
Acidic substances and calcium hydroxide in the cement will have a neutralization reaction, and the biomass will loose, expand, and easily hydrolyzed and powdered after encountering water.
7, avoid high temperature heat
After the solidified mortar or concrete components are often exposed to high temperatures and heat, there is a loss of strength.
8, avoid drying speed
If concrete or plaster is exposed after exposure, its moisture will rapidly evaporate and its strength will be reduced or even lost.
In home decoration, cement mortar is used for floor tiles, wall tiles and masonry, etc. It not only enhances the adsorption capacity of surface materials and base layer, but also protects the internal structure. Therefore, in the renovation project, cement mortar is a must. Indispensable material. Therefore, if the impurity content exceeds the scale, it must be cleaned before use. Therefore, under the condition of guaranteeing the compaction of the cast, the applied water should be minimized.
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