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Flash Setting Agent

FLASH SETTING AGENT TS-N021 FLASH SETTING AGENT is a kind of powder addictive of concrete and mortar. It can help cement rapid hardening and quick-setting. The cement blended with suitable amount of accelerator has performance of high early strength and increasing later strength, meantime it......

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FLASH SETTING AGENT

TS-N021 FLASH SETTING AGENT is a kind of powder addictive of concrete and mortar. It can help cement rapid hardening and quick-setting. The cement blended with suitable amount of accelerator has performance of high early strength and increasing later strength, meantime it also keeps other properties of cement. Accelerator is an indispensable additive in shotcrete construction, it can meet the special construction requirements of urgent repair and concrete rapid-hardening in underground roadway. The accelerator is the auxiliary product used in concrete and mortar wet shotcrete construction, it has the advantages of little dust, low rebound rate, good workablility, high strength, no shrinkage, small expansion, auto-flow, free of vibration, non - toxic, harmless, non - aging, no pollution to water and surrounding environment, good self - tightness and rust prevention.


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Performance indicators:

Index
Product

TS-N021A

TS-N021B

Moisture content

≤2.0

≤2.0

Fineness(80um)%

<15

<15

Initial setting

<3min

<5min

Final setting

<8min

<12min

1d Compressive Strength /MPa

≥7.0

≥6.0

28d Compressive strength ratio/%

≥75

≥70

Performance index: JC/477-2005 Speeding agent for shotcrete


Scope of application:

TS - N021 accelerator is widely used in shotcrete and mortar engineering. It can be used for underground engineering in departments of the defense, railway, metallurgy, coal, hydropower and lining support of tunnel, rock and mine excavation. Compared to the ordinary concrete casting way, shotcrete can speed up construction progress and reduce engineering costs.


CONSTRUCTION GUIDE

1.The proper blended dosage shall be determined during consturction.(Usually 4-6% of the cement weight).

There are two ways to blend the accelerator in the shotcrete: 

The first way is to dry premix the accelerator with cement, sand and gravel and then transport the mixture to the ejector for the following injection.The second way is to evenly put the accelerator on the feeding belt together with the mixture into ejector bucket into or directly evenly pour the accelerator into the ejector for injection.

Make the intervals as short as possible , in case of the accelerator absorbs the moisture in the aggregate and in advance get coagulated to affect the engineering quality.

2.Be alert not add the accelerator during the mixture stirring since gravel and sand contains much moisture and the accelerator would absorb water and decompose its quick-setting component in short time ,which not only affects the setting time but also reduce the concrete strength .The dosage should be tested and finalized before large-scale use since different project usually adopts different class cement. 

3.Do not use the expired cement and unqualified cement.

4.The coagulant should be properly stored to prevent the agglomeration and failure from dampness. 

5.Pay attention to the early maintenance and spray enough water to ensure the late strength. 

6.Strictly control the water-cement ratio and increase the amount of accelerator in project of water seepage and leakage.


Package and storage:

The product net weight of each bag is 25kg and product should be kept in a cool, dry and ventilated indoor place.


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