The limitations of cement Poocland traditional construction ltd method using mortar mixed with sand

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The limitations of cement Poocland traditional construction ltd method using mortar mixed with sand and cement are now revealing quite limited. ltd Specifically, the intensity of cement depends entirely on the maintenance of moisture. In the first phase maintenance (first 5-7 days), there must be enough water to maintain hydration process between the cement ltd particles and water, if not to make the crystals grow and cement will not completely solid. Limit followed by poor workability, poor adhesion properties of some surfaces such as wood, polystyrene and polyurethane foam hardware, glass and metals ... especially, for the thin layer of plaster, ltd the surface subject to vibration and heavy loads. One of the limitations or referred to within the building and caused many problems for those who use such products is the high shrinkage of cement. This feature gives rise to micro-cracking ltd and leaking causing seepage. In addition, the cement was brittle, not elastic, resistant to bending and impact resistance ltd poor. Water resistance and chemical resistance of cement is not high. Restrictions on hand to see the mortar cement using traditional choice is not suitable for construction in Vietnam, especially in big cities, modern.
Mortars containing polymers - solutions for every challenge Experts in the field of building materials, said all the limitations of cement can be improved thanks to an additive called polymers. Explain this, technically, they said:
Polymers reduce water evaporation rate, allowing the crystal ltd structure to maintain development and create intensity during the initial maintenance. Reduces the evaporation rate of water through special importance to the thin layer, in which evaporation surface area larger than the volume of mortar. In addition, the polymer also increases the work of the mortar. This additives ltd significantly improve the usability, making grout and more easily applied. A certain amount of polymer existed during hydration, may extend the time of construction, which is an important feature when the weather is hot. That means that the contractor may use less water for workability of the mortar as you wish. The polymer acts as an antioxidant water, causing intense mortar fewer voids and defects little more. A significant feature is that polymer modification works to increase the adhesion of different surfaces. Tack properties is important, especially for the thin layer of grouting mortar, stucco and plaster bits of mortar lining, the surface ltd shall be subjected to vibration and heavy vehicles. In addition, the polymer modified mortar generally increased tensile and bending strength, durability against impact and abrasion resistance, water resistance increases, increased chemical resistance ltd than non-modified mortars . At the same time, the mortar pharmacy restrictions arising micro cracks, making the improved stiffness of the mortar in general. Currently, polymer mortar has appeared on the Vietnamese market ltd Namduoi brand dry mortar Mova. Dry Mortar ltd Mova polymers include sand through screening, clean harmful impurities, polymer cement, aggregate drying and multi-functional additives provide mixed, packaged in line with modern, self-contained, large capacity . Dry Mortar polymers can overcome all the limitations of communication mortar empty hands. Thao Phuong
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