Huaiyuan early strength antifreeze manufacturer – what is the labeling of early strength antifreeze, instructions for use of early strength antifreeze

Contents of this article

• What is concrete early-strength antifreeze?

• Does the antifreeze admixture come with early strength?

• What is the difference between early strength agent and antifreeze agent in concrete admixtures?

• When to add early strength antifreeze?

• Instructions for use of early strength antifreeze?

• What is the applicable temperature of early strength antifreeze?

• What is the correct application method for antifreeze?

What is concrete early-strength antifreeze?

Early strength antifreeze is a compound antifreeze. It has the characteristics of early strength, anti-freeze, air entrainment, water reduction, fully water-soluble, low dosage, etc. It can significantly change the workability and pumpability of concrete, and has small slump loss.

Especially used in winter construction of pumped concrete and commercial concrete mixing stations. Compared with other concrete antifreezes, alkali-aggregate reaction does not occur, and the durability of concrete buildings is enhanced, which can reduce The winter construction cost of concrete has significant economic benefits.

Does the antifreeze admixture come with early strength?

No!

Admixtures that accelerate the early strength development of concrete become early strength agents. Admixtures that can harden concrete at negative temperatures and achieve sufficient antifreeze strength within a specified time are called antifreeze. Early strength agent is an admixture that improves the early strength of concrete. Antifreeze is an admixture that lowers the freezing point of water so that concrete can solidify and harden at negative temperatures.

Each has its own role. Nowadays, in general projects, composite antifreeze is used, that is, early-strength antifreeze.

What is the difference between early strength agent and antifreeze agent in concrete admixtures?

1. The performance is different.

Concrete early-strength agents refer to admixtures that can improve the early strength of concrete. The varieties of early-strength agents are: calcium chloride, sodium chloride, sodium salt, gypsum, water glass, sodium aluminate, and sodium carbonate. , calcium carbonate, sodium fluoride, triethanolamine, etc.

Early-strength antifreeze has the properties of anti-freezing, lowering freezing point, and significant early-strength effect during use. It can shorten the natural curing time of concrete and improve the frost resistance and impermeability of concrete.

The components of early-strength antifreeze are designed based on the ice crystal transformation theory, and are composed of early-strength, reinforcement, antifreeze, air entrainment, and rust prevention components. Adaptable to various cast-in-place prestressed reinforced concrete. It is suitable for anti-freezing early concrete in industrial and civil buildings, water conservancy, road and bridge construction, etc. It is the first choice admixture for winter construction using the comprehensive heat storage method.

2. The occasions and periods of use are different.

Concrete early strength additives are mostly used in winter or during emergency repairs. Concrete early strength additives have no significant impact on the later strength of concrete, so they should be used in the early stage. Generally speaking, when the temperature of the day is between -5 ℃ and 5 ℃, with alternating positive and negative temperatures, early-strength agent or early-strength water-reducing agent can be used.

If the daily low temperature reaches or falls below -10 ℃, early-strength antifreeze with a specified temperature of -5 ℃ can be used. If the daily low temperature is -15 ℃ or -20 ℃, use early-strength antifreeze with specified temperatures of -10 ℃ and -15 ℃ respectively. The difference between early-strength agents and antifreeze agents in concrete admixtures is that early-strength agents can increase the early strength of concrete, while antifreeze agents can improve the frost resistance of concrete during winter construction and ensure the quality of concrete

When to add early strength antifreeze?

The dosage of Gallux early-strength antifreeze is 3%~5% for cement. When the temperature is about -5 degrees, the optimal dosage is 4%; when the temperature is about -10 degrees When the temperature is -15 degrees, the optimal dosage is 5%; when the temperature is -15 degrees, it is appropriate to mix 4% to 6%. Can be added directly to the blender for use. The mixing time should be appropriately extended by 1 to 2 minutes.

This agent has a water-reducing effect. The actual amount of water added can be determined through trial mixing according to the required mortar consistency requirements.

The ambient temperature should be kept above -5 degrees when plastering

Instructions for use of early-strength antifreeze?

It has obvious early strength, air entrainment and anti-freeze effects. It can be used in concrete construction with the lowest daily temperature of 0℃~-20℃, and has no rust effect on steel bars.

Scope of application:

Poured-in-place or precast concrete for various industrial and civil buildings, various steel bars and prestressed reinforced concrete for highways, airports, tunnels, bridges, etc.

Technical indicators of early-strength antifreeze:

The project standard stipulates the technical indicators of first-class early-strength antifreeze

Water reduction rate (%) ≥ 810

Air content (%) ≥ 2.53.0

Bleeding rate ratio (%) ≤ 10035

Compressive strength ratio (%) specified temperature ℃-5 -10-15-5-10-15

R-7d201210251612

R28d959590110110110

R-7+28d95908510810095

R-7 +56d100115110105

Setting time difference (min) Initial setting-120~+120+30

Final setting-120~+120+45

Impermeability height ratio (%)≤10070

Alkali content (kg/m3)≤10.65

90d shrinkage ratio (%)≤120105

50 freeze-thaw strength loss Rate ratio (%) ≤ 10055

The corrosion effect on steel bars should indicate that there is no rust or corrosion on steel bars

Homogeneous performance:

Appearance: light gray powder; Moisture content: ≤3%; fineness: all passed 0.315 sieve; cement slurry fluidity ≥150mm

What is the applicable temperature of early-strength antifreeze?

Hebei Zhusheng Building Materials Technology Development Co., Ltd. produces ZS-102 early-strength antifreeze, which has anti-freezing, lowering freezing point, and significant early-strength effects during use. It can shorten the natural curing time of concrete and improve Frost resistance and impermeability of concrete.

It is an antifreeze compounded of components such as water reduction, early strength, freezing point reduction, and frost damage prevention. It has early strength, antifreeze, and appropriate air entrainment properties.��Corrosion protection and other functions.

Significantly improves the early strength, and the strength continues to increase in the middle and late stages. It is an ideal admixture product for winter construction.

Early-strength antifreeze is suitable for mortar and concrete projects within the range of -15℃.

What is the correct application method for antifreeze?

Instructions for use: 1. Dosage: The larger the dosage, the better the early-strength antifreeze effect. Considering the temperature and the economy of use, 3-5% is appropriate. It can be adjusted according to the temperature change. Adjust the table below. If there is time, the dosage can be adjusted to meet the winter construction requirements of 0 ℃ ~ -15 ℃. The dosage can be adjusted according to different temperature changes. Temperature ℃ -15 ℃, mixed with C