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Effect of HPMC Hydroxypropyl Methyl Cellulose of cement-based building mortar

 

 

A. water retention

Building special hydroxypropyl methyl cellulose, prevent water infiltration wall. The amount of water to stay in the mortar, cement has a longer time to hydration, and cellulose water and mortar ether solution is proportional to the viscosity, higher viscosity, better water retention. Once the water molecules increase, water retention decreased. Because for the same amount of special architectural hydroxypropyl methyl cellulose solution, water means that the increase in viscosity decreased. Water retention increased leads to prolong the curing time is the construction mortar.

 

B. workability improvement

Application of HPMC hydroxypropyl methyl cellulose can improve workability.

 

C. lubricating ability

All the air entraining agent has the role of wetting agent because of its lower surface tension and help fine powder mortar in the dispersed when mixed with water.

 

D. sag resistance

Good resistance to sagging mortar means danger of thick layer construction without sagging or downward flow. Sag resistance by building special hydroxypropyl methyl cellulose to improve. Especially the new building dedicated hydroxypropyl methyl cellulose can provide better sag resistance of mortar.

 

E. bubble content

High air content in mortar production rate and the construction of better, reduce crack formation. It also reduces the intensity value, "liquefaction" phenomenon. Bubble content usually depends on the mixing time. Products are widely used to improve the performance of hydraulic building materials, such as cement and gypsum etc.. In the cement mortar, which can improve the water retention, prolong the correct time and open time, and can reduce the sagging phenomenon.

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