Detailed Introduction

YL-15-复配外加剂

YL - 15 composite antifreeze (powder)
 
Products overview:


         YL - 15 composite antifreeze is the water reducing, early strength, to reduce the freezing point, to prevent the frost damage of components such as composite type without chlorine antifreeze, powder, with early strength, frost, water, gas, corrosion resistance and other functions.Concrete mixed with this agent by the requirement, can significantly improve the pore structure, reduce the free water, effectively reduce the freezing point of concrete.Promote the low temperature under the condition of cement hydration and hardening of concrete, greatly improve the early strength, middle strength continued to grow, is the ideal additive varieties winter construction.
 
And qualitative indicators:

project

indicators

project

indicators

Facade

Powdery gray

Flowability net

120—160mm

PH Value

7—9

Alkali content

2.2

moisture content

≤10%

chloride ion content

No

 

The main technical performance:


          1, the range of content: content of gelled material dosage of 3.0 4.5%, water reducing rate of 15-25%.
          2, the product is no chlorine and ammonia low alkali type composite antifreeze, has the dual role of anti-freezing and water reducing, will not cause steel corrosion by antifreezing admixture.When used by adjusting the content can be adapted to 0 ℃ - 20 ℃ in winter concrete construction requirements.
          3, the product adopts the new type antifreezing components, greatly reduces the alkali content, can avoid JianJiLiao reaction of concrete.
          4, with this product can greatly improve the workability of concrete, improve and enhance the physical and mechanical properties of concrete, concrete freezing-thawing resisting sexual, more suitable for preparation of pumping concrete with antifreeze requirements.
          5, C50 below apply to all kinds of reinforced concrete and prefabricated, made above C50 concrete can be used with high efficiency water reducing agent or require the company to adjust.
 
Physical and mechanical properties of concrete:

Test project

Factory technical indicators

National standard (grade a)

Water reducing rate (%)

≥12

≥8

Exudation rate (%)

≤50

≤100

Air content (%)

2.5-4.0

≥2.5

Difference between the setting time
(min)

Initial setting

-60~+120

-90~+120

Final set

-60~+120

-90~+120

 

 

The compressive strength ratio (%)
Not less than

Specified temperature

-5℃

-10℃

-15℃

-5℃

-10℃

-15℃

R-7 days

25

20

15

20

12

10

28 days

100

100

100

95

95

95

R-7+28 days

100

95

95

90

90

90

R-7+28 days

100

100

100

100

100

100

Shrinkage rate than(%)

28 days

≤120

≤135

Effect on reinforcement corrosion

No rust

——

 
The main technical points:
         1, please follow the "technical specification for concrete plus external agent application of the provisions of the construction.
         2, careless with plastic sheeting and after casting film covering on the surface, don't make it immediately crack of cold or because of too much wind.Into the mould temperature should be controlled in more than 5 ℃.

Content according to the temperature change to adjust dosage according to the table below:
  

T ℃

-5℃

-10℃

-15℃

-20℃

mixC×%

3.0

3.5

4.0

4.5

         Rapid increase in early strength requirements can be heat curing, concrete in forming if the surface has a freezing phenomenon will cause frost damage to its, after the environmental temperature, strength is still growing rapidly.

Package and storage:


         1, Products with inner plastic outer double packing, each bag of 25 kg;
         2, Powder should be stored in a dry and ventilated place, agglomeration can be used after crushing, does not affect the use effect.
Expiration date: 1 year, extended after test qualified can still use.