HY-AEA type concrete expansion agent

1

Principle of action
This product is mixed into concrete
,
It can combine with cement and react with water to form expanded crystal hydrate
Ettringite< br/> ,
Make the concrete expand moderately in the early and middle stages
,
Under the constraints of steel bars and adjacent positions
,
Convert the expansion into stress
,
This stress can roughly offset the tensile stress generated when concrete shrinks
,
thereby preventing or reducing the shrinkage and cracking of concrete
,
And densify the concrete
,
This can also improve the cracking and anti-seepage ability of the concrete
,
To achieve the effect of self-waterproofing of the structure, compared with
type expansion The agent also has the characteristics of small dosage and low alkalinity.
2

Main properties

This product is mixed into cement


,
can be mixed Make compensation concrete
,
and make structural self-waterproofing or waterproof mortar.

Compared with ordinary concrete without this product
,
the rheology before solidification is similar
,
but the collapse The drop loss is slightly faster
,
The setting time is shortened
,
but it does not affect the construction.

When the reinforcement ratio of concrete mixed with this product is


,
the expansion rate is limited
,
Establishing

self-stress values
in concrete has little effect on strength.

Under the specified dosage
,
Compared with ordinary concrete
,
It has early strength effect
,
days The strength is roughly the same as that without doping
,
The strength continues to increase in the later period.

The impermeability grade is greater than
,
The frost resistance grade is greater than
,
The elastic modulus
,
Poisson’s ratio and Similar to ordinary concrete.

No corrosion to steel bars
,
No pollution to water quality.
Three

Main uses
Underground buildings such as underground parking lots
Warehouses
Tunnels
Mines
Civil air defense
Sidewalk
Machine kang
,
Subway, etc.
Build a pool
Swimming pool
Water tower
Storage tank
Large container
Granary
Oil tank
Storage in cave, etc.
Self-waterproof rigid waterproof roof
Mortar anti-seepage layer
Mortar moisture-proof layer.
Prefabricated components
Anchor connection of frame structure joints
Pipe joints
Grouting materials for post-tensioned prefabricated components
Post-cast joints of components
Rock foundation Grout material.
Anchor screws for mechanical equipment
Non-shrinkage pouring between the machine base and the concrete foundation.
Iron pipe
The steel pipe is lined with protective mortar.
Cement products
Manufacturing self-stressing
Prestressed and steel-jacketed prestressed concrete water pipes
Concrete and reinforced concrete drainage pipes
Floor slabs
Beams and columns
/> Waterproof roof panels, etc.
Requires good crack resistance
Important buildings with perfect appearance, such as sports stands
museums
hotels, etc.
Highway pavement
Bridge concrete surface layer
Culverts, etc.

Construct high-strength
High-impermeability shafts
Fill the dam backfill trench with concrete, etc.

This product can be used for concrete projects and cement products that require anti-crack
anti-permeability
joints
filling.
Four things to note

The concrete mix design is the same as that of ordinary concrete, but it must be determined through testing, and the minimum cement dosage is generally not less than

cubic. Hydraulic engineering
Except for offshore mass concrete.
In principle, the product can be added to the mixer together with other raw materials for mixing. The mixing time should be appropriately extended to ensure uniform mixing before discharging.
For accurate measurement, it is best to have a dedicated person responsible to ensure that the error is controlled within


Concrete transportation
Vibration is the same as that of ordinary concrete, but for self-waterproof concrete, more attention must be paid to the vibration and compactness, and no leakage of vibration
Under-vibration
Over-vibration is allowed.
The seams should be treated as usual, but the outer seams should be covered with
mortar and a waterproof tape.
The poured concrete should not be exposed to direct sunlight and should be covered with straw mats in time. After the concrete hardens, a dedicated person should be responsible for maintaining it for no less than
days to keep the concrete in a moist state.
The prescribed time for removing the slab formwork is the same as that for ordinary concrete, and the time is appropriately extended in winter. Exposed surfaces of concrete must be covered and protected with wet straw mats or films. If honeycomb dog holes appear, you can remove the loose areas and then repair them with mortar or pisolite concrete.

The working environment of concrete cannot be above
℃
for a long time. Insulation measures must be taken when the construction temperature is lower than
℃
.
Five-pack storage
This product is packed in kilogram woven bags.
Store on wooden pallets in a dry place.