Concrete alkali-free accelerator

Product introduction

Furman concrete accelerating setting agent is an alkali-free composite aqueous solution with the characteristics of low dosage, fast setting, small rebound, and early strength. It is suitable for concrete anchoring operations in highway, railway bridges, culverts, tunnels, subway construction, and other concrete projects that require urgent reinforcement in construction projects.

Features

Since the alkali-free liquid accelerator does not contain alkaline substances, it greatly reduces concrete damage caused by the introduction of alkaline substances, such as alkali aggregate reactions, while avoiding corrosion of steel bars.

Rapid setting, adhesion wall, loss of strength;

1d strength ≥7.0Mpa、28d Compressive strength ratio ≥90％

Small rebound, used for spray anchor concrete, rebound rate ＜20％

Improve the durability of concrete and prevent corrosion of steel bars

Implementation standards

GB/T35159-2017 《 Accelerating setting agent for shotcrete》

Scope of application

Suitable for wet shotcrete and mortar;

Suitable for shotcrete in railways, highway tunnels, and subway projects;

Shotcrete suitable for diversion tunnels in hydropower projects;

Suitable for quick-setting concrete and mortar used in emergency repairs in mines and construction projects.

Instructions

The construction method of this product is the same as that of ordinary concrete. During mixing, just add this product and mixing water to the mixing kettle and stir.

Recommended dosage

When using conventional shotcrete (the type and amount of cement depends on the performance requirements of the concrete), the amount of this product is generally 6 times the amount of cement. ％-9％。Before use, it is necessary to conduct a suitability test on the cement used in construction to determine the dosage.

Precautions

Portland cement or ordinary Portland cement should be used, with a strength grade of not less than 42.5 MPa；

Early curing of concrete should be strengthened (10 d~14d）， Reduce late strength loss;

For cement with long setting time or long aging time, the dosage should be increased appropriately.

transportation and storage

The product is stored at a temperature of 0-35 ℃In a well-ventilated warehouse, this product is made of non-flammable and explosive materials and can be transported as general cargo.

shelf life

3After a few months, there will be a small amount of precipitation, but it will not affect the use effect after shaking well.

statement:

The applicable scope, usage conditions and suggestions of Furman Group products are formulated based on the company's latest technology and experience. They are based on normal conditions and appropriate storage, handling and appropriate use. Due to the actual application of raw materials and coordination Due to different conditions of use, the conditions stated in this product brochure, written suggestions and other advice do not guarantee product performance and applicability to special circumstances, and do not assume legal liability. The rights of third parties must be respected. Users are advised to pay attention to the company's latest product manuals.