Alkali-free accelerator

Alkali-free accelerator

The alkali-free accelerator is synthesized from chemical components such as sulfoaluminate, ester plasticizer, catalyst, etc., does not contain chloride ions, does not contain K plus , Na plus ions of alkali metals, does not corrode steel bars, does not pollute the environment and harm workers. body; spraying
Cement slurry, cement mortar, and concrete are mixed with high-performance non-alkali quick-setting agent, which can accelerate the setting and hardening speed of cement and improve the early strength
, the impact on the later strength is small, or even not reduced; and the cohesion and bonding strength of concrete and mortar are greatly improved, and the rebound rate is reduced by more than 80 percent , which effectively reduces the material loss caused by rebound and improves the Economic benefits, due to the greatly reduced rebound rate, the alkaline cement dust that pollutes the air and harms the human body is greatly reduced, which protects the environment and speeds up the construction progress; it has the effect of micro-expansion, shrinkage and crack resistance, and greatly improves the impermeability and water resistance It has anti-corrosion and anti-corrosion functions, and its corrosion resistance coefficient is increased by more than 50 percent compared with ordinary accelerators; high-performance accelerators are the preferred materials for spraying high-performance concrete, alkali aggregate active concrete, durable concrete, and environmental protection projects.
The high-performance accelerator has the excellent properties of water reduction, quick setting, early strength, reinforcement, micro-expansion, anti-crack, anti-seepage, anti-corrosion and anti-corrosion. The technical performance index of the mixed concrete meets the requirements of JC477-2005 first-class products.

High-performance alkali-free accelerator is suitable for the preparation of spray-type high-performance concrete and mortar, quick-setting early-strength concrete for water sealing and plugging; the initial lining concrete and mortar for tunnels such as railways, highways, and hydraulic diversion tunnels, as well as metallurgy, coal mines, etc. Thin-walled concrete (mortar) reinforcement, repair, foundation pit retaining wall, fire-resistant engineering, and protective engineering for wells and lanes, military industry, and underground engineering of civil air defense.


Density 1.25~1.35g/ml Solid content 30~40 percent
PH value 4.0~6.0 Water reduction rate 12~20 percent
Initial setting time of slurry is less than 5min 1d compressive strength is greater than 8Mpa
Final setting less than 8min 28d compressive strength ratio less than 85 percent
Impermeability grade greater than S8 Corrosion resistance coefficient greater than 0.90
Air permeability coefficient less than 10-9cm/s 28d shrinkage ratio less than 125 percent
Corrosion effect on steel bars No rust Rebound rate less than 10 percent