Cementitious grout admixture for grout-270, 300, 340, 380 Supply

General Feature Performance

GENERAL

Scope of application

◇ Concrete works with extremely dense reinforcement, complex shapes and inconvenient to vibrate;

◇ Concrete engineering renovation and reinforcement;

◇ Special projects that require high bond strength at the interface between new and old concrete;

◇ Freeze-resistant, impermeable and anti-corrosion concrete;

◇ Construction of waterproof concrete, steel tube concrete and compensated shrinkage concrete (pumping);

◇ Large-area concrete floor self-leveling construction.

FEATURE

1. High cohesion to ensure that the concrete does not segregate during the flow and parking process;

2. High water retention to ensure that there is no bleeding on the surface of the concrete during hardening;

3. High fluidity, to ensure that the concrete can be self-flowing and compact;

4. High strength (strength up to 80MPa), high frost resistance, high impermeability;

5. The hardening process does not shrink and has a micro-expansion effect;

6. High bond strength with old concrete;

7. The ability to resist chloride ion corrosion has rust resistance;

8. Strong anti-vibration interference in the process of coagulation and hardening, and can not interrupt traffic construction in the reinforcement of roads, railway bridges, etc.

PERFORMANCE

Performance		Non-shrinkage self-compacting polymer concrete of HPC with the admixture
Compressive strength	3d	30—50MPa
	28d	40—100MPa
Impermeability grade		≥P12
Freeze-thaw cycle test		≥F150
Workability		Slump 220-280mm, slump expansion 650mm±50 self-flow compacting
Bleeding rate		0
24h plastic expansion rate (%)		≥0.020

Construction process

Portland cement can be used, and the amount of admixture is 20% of the cement amount. However, it should be noted that the admixture should be spread evenly on the cement surface to avoid direct contact with wet sand and gravel. It is not suitable to use manual stirring. It is recommended to use a forced mixer and appropriately extend the stirring time for one minute.

The self-compacting performance of concrete is sensitive to raw materials and mix ratio, so the quality of raw materials should be strictly controlled; the sand and gravel gradation must be qualified.

Carry out a reasonable proportion design and construction according to the proportion, and the measurement of each material should be accurate. Water consumption should be strictly controlled.

The polymer concrete mix is as follows:

Concrete strength grade	Cement strength grade	Proportion (kg)					Compressive strength 28d,Mpa
Concrete strength grade	Cement strength grade	Cement	Admixture	Coarse sand	Crushed stone (particle size 15mm)	Water	Compressive strength 28d,Mpa
C40	42.5	450	90	800	850	200±10	45
C60	42.50	500	100	800	800	200±10	65

Packaging and storage

This product is packed in PP paper bags, 25KG/bag, pay attention to moisture-proof, and the shelf life is 12 months.