Chemical Admixture PCE Slump Retention Polycarboxylate Ether Superplasticizer As Concrete Additives
XRT-DR is a kind of slump retaining and mud resisting agent for concrete. Under normal circumstances, the combined use of this product with high water reduction type mother liquor can significantly improve the workability and wrapping property of concrete, solve the problem of slump loss of concrete for 2-4 hours, and the serious loss of slump caused by excessive mud and powder content of sand and stone.
XRT-DR serves as a specialized admixture for concrete, functioning as both a slump retention and clay resistance agent. Typically, when this product is used in conjunction with high-range water-reducing masterbatch, it can remarkably enhance the workability and cohesion of concrete. It effectively addresses the issue of slump loss over a period of 2 to 4 hours. Moreover, it mitigates significant slump degradation caused by the excessive amount of clay and fines in aggregates, ensuring the consistent quality of concrete mixtures.
◆ No initial water reduction, does not increase the initial expansion
and slump of concrete;
◆ The water reduction performance is gradually produced after 1
hour, and the slump of concrete will increase with time by
increasing the amount of slump retention and mud resistance
agent;
◆ With resistance to clay/stone powder and temperature caused by slump loss
problems;
◆ The use of this product can be appropriate to reduce the amount of water reducer.
Polycarboxylate Ether Superplasticizer Concrete test data
A. Mix proportion Unit:kg/m3
P.O.42.5
II Fly Ash
Mechanism sand fineness modulus
3.3
stone
Grade 5 to 25
Water
Water Reducer
Slump retention
425
100
880
990
170
1.9
0.38
B. Composite products are used for concrete performance test results
slump flow/slump extension(mm)
initial
1h
2h
3h
200/460
225/580
225/580
215/570
compressive strength(MPa)
3d
7d
14d
21d
19.0
30.4
35.6
42.2
Noted:The test results show that when XRT-DR is used in combination with PCE B, the initial fluidity of concrete is slightly small, and the cohesion is basically not affected the inner concrete has good expansibility and slump retention,
and the strength development meets the standard requirements.
Recommended parameters
The dosage of total cementing material was 0.05-0.20%.
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