Thickening Powder for Dry-mixed Mortar
The thickening powder is composed of organic and inorganic composite materials. The product has good workability, high water retention rate, small loss of consistency of 2 hours, high strength, and crack resistance; it is non-toxic, non-radiative, no aging, and has no pollution to water and surrounding environment. The mortar mixed with thickening powder has significantly improvement in operability, bonding strength and durability.
一、Product properties
1.High water retention rate: freshly mixed mortar has water retention rate of 90-95%;
2.Small loss of consistency: freshly mixed mortar has consistency loss over 2 hours is < 25%;
3.High strength: 7-day strength can reach 90% of standard model;
4.Crack resistance: the mortar is anti-cracking after applied to walls, which improves the shortcomings of traditional mortar;
5.Frost resistance: the compressive strength loss rate is < 25%, the mass loss rate is < 5%;
6.Energy saving and environmentally friend: the product is non-toxic and tasteless, which is a green building material that is suitable for healthy living.
二、Application scope
Masonry mortar is suitable for various masonry projects. Plastering mortar is suitable for plastering projects such as interior and exterior walls, skirting lines, windows, cornices, plinths, and wall joints.
三、Use method
1.The amount of thickening powder shall be according to admixture requirements that too little thickening powder cannot perform the effect and too much admixture will delay the setting time. The amount is generally 0.5-3.0% of total mass of the dry-mixed mortar. The specific amount shall be determined by the thickening powder specification;
2.Mix simultaneously with sand and cement;
3.As an admixture of mortar, the thickening powder can substantially improve the crack resistance and impermeability of mortar.
四、Technical indicators
|
No. |
Testing item |
Technical requirement |
Test result |
Conclusion |
|
|
01 |
Water content % |
|
3.98 |
|
|
|
02 |
Water retention rate % |
≥88 |
91 |
Conform |
|
|
03 |
Fineness % |
0.315mm的sieve residue Shall not >15% |
8 |
Conform |
|
|
04 |
Chloride ion content% |
≤0.1 |
0.1 |
Conform |
|
|
05 |
Difference of setting time min |
+60~-60 |
+22 |
Conform |
|
|
06 |
Frost resistance |
Compressive strength loss rate % |
≤25 |
12.5 |
Conform |
|
Mass loss rate % |
≤5 |
1.1 |
|
||
|
07 |
Masonry compressive strength ratio % |
≥95 |
97 |
Conform |
|
|
08 |
Masonry shear strength ratio % |
≥95 |
98 |
Conform |
|