Xi'an grouting material manufacturer, power plant equipment secondary grouting material, Xi'an non-shrinkage grouting material

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Contact number of high-strength non-shrink grouting material manufacturer
Grouting material is a high-strength material As aggregate, it is formulated with cement as a binding agent, supplemented by high fluidity, micro-expansion, anti-segregation and other substances. It can be used after adding a certain amount of water at the construction site and stirring evenly.
It has the characteristics of good self-flowing properties, rapid hardening, early strength, high strength, no shrinkage, micro-expansion, non-toxic, harmless, no aging, no pollution to water quality and surrounding environment, good self-tightness, and anti-rust. In terms of construction, it has the advantages of reliable quality, reduced cost, shortened construction period and easy use. Fundamentally change the stress situation of the equipment base so that it can evenly bear the entire load of the equipment, thus meeting the installation requirements of various mechanical and electrical equipment (heavy equipment high-precision grinders). It is an ideal grouting material in the era of padless installation.
Usage
Grouting material is mainly used for anchor bolt anchoring, emergency repair of aircraft runways, fixation of nuclear power equipment, reinforcement of road and bridge projects, machine bases, steel structures and foundation pockets, and secondary grouting of equipment foundations. , buried steel bars, reinforcement and renovation of concrete structures, crack management of old concrete structures, installation of mechanical and electrical equipment, installation of tracks and steel structures, pile sealing in static pile pressing projects, thickening of wall structures and repair of water leakage, various Collapse grouting of foundation projects and various emergency repair projects, etc.
Classification of grouting materials
Mainly used for anchoring anchor bolts, cutting embedded steel bars, and secondary grouting of equipment foundations to determine the thickness of the grouting layer. Secondary grouting of equipment foundations with oil-resistant requirements is called ordinary grouting material
and is mainly used for secondary grouting of equipment foundations with grouting layer thickness. Reinforcement (repair thickness) of beams, slabs, columns, foundations and floors of buildings. Secondary grouting of equipment foundations with oil-resistant requirements is called special grouting material for reinforcement projects
. It is mainly used for grouting of prestressed tunnels, secondary grouting of equipment with grouting layer thickness, and grouting of gaps between angle steel and concrete for concrete beam and column reinforcement. It is called special grouting material for concrete gap repair
. It is mainly used for the reinforcement and transformation of concrete structures for the installation of precision, large-scale and complex equipment, and it is also called the high-strength non-shrinkage grouting material
. It is mainly used in high-temperature environments. Special grouting material, with stable volume under high temperature and good thermal shock resistance. The equipment is exposed to high temperature radiation temperature environment for a long time. The thickness of the grouting layer is the second grouting of the equipment foundation. It is called heat-resistant grouting material
. It is mainly used for short construction time. , the hourly strength reaches, the equipment can be operated immediately, the thickness of the grouting layer is the second grouting project to rush the construction period, it is called special grouting material for emergency repair projects
It is mainly used for the grouting needs of large-volume, high-precision, complex structural equipment, and the grouting parts Leave no dead ends. It has good stability and is called a special grouting material for precision equipment and extra large heavy industry equipment. It is called a special grouting material for precision equipment and extra large heavy industry equipment. It is mainly used for rapid strength growth under negative temperatures and is not affected by freezing damage. It is used for anchor bolts. Anchor and bury steel bars, and secondary grouting of the equipment foundation according to the thickness of the grouting layer. The secondary grouting of equipment foundations with oil-resistant requirements is called anti-freeze grouting material
Features
▲ Early and high-strength pouring, the acquired strength can be as high as above, shortening the construction period.
▲In the self-flowing state, you only need to add water and stir on site, and pour it directly into the equipment foundation. The mortar flows by itself, and the construction is vibration-free, ensuring vibration-free and long-distance grouting construction.
▲The micro-expansion pouring body will not shrink after long-term use, ensuring close contact between the equipment and the foundation, no shrinkage between the foundation and the foundation, and appropriate expansion compressive stress to ensure the long-term safe operation of the equipment.
▲Oil permeation resistance: After being soaked in engine oil for days, its strength is improved. It is molded, dense, impermeable, and adapts to the oil pollution and environmental protection of the machine base.
▲Durability tested 10,000 times by fatigue test, and the strength showed no significant change in the freeze-thaw environment test.
▲Good weather resistance, long-term safe use at ℃ ~ ℃
▲Low alkali corrosion resistance Strictly control the alkali content of raw materials, suitable for projects that require inhibition of alkali aggregate reactions.
Raw materials
Cement
Portland cement or ordinary Portland cement should be used and comply with the regulations. When using other cements, corresponding standards
requirements should be met.
Fine aggregate
Similar to natural sand or artificial sand that should comply with/specify.
Concrete admixtures
Concrete admixtures should comply with and regulations.
Other materials

Should comply with relevant standards.
5. General physical properties of grouting materials. Click to see a larger image
Construction methods, mixing machines, grouting equipment, templates and maintenance items should be prepared before grouting construction.
During secondary grouting, the horizontal distance between the formwork and the equipment base should be controlled so that the top elevation of the left and right formwork should not be lower than the upper surface of the equipment base.
When the concrete structure is renovated and reinforced, sufficient grouting holes and exhaust holes should be left in the formwork support. The grouting hole diameter should not be smaller than the grouting hole and the spacing should not exceed the spacing.
When mixing cement-based grouting materials, water should be added according to the water consumption required by the product. Mechanical mixing should be used. When mixing, it is advisable to first add / of water to mix for about 1/2, then add the remaining water and mix until uniform. The mixing location should be close to the grouting location.
, Anchor bolt grouting
⑴ When the anchor bolt hole is formed, the bolt hole wall is rough, the hole should be cleaned, and there should be no floating dust,
oil and other impurities. Use water before grouting Soak ~ to remove accumulated inflammation in the hole.
⑵ Oil and rust on the surface of the anchor bolts should be removed before grouting.
⑶ When pouring the mixed cement-based grouting material into the bolt hole, the
position of the bolt can be adjusted as needed. Vibration is strictly prohibited during the grouting process, but tamping can be done appropriately. Bolts must not be adjusted again after grouting.
Secondary grouting of the equipment foundation
⑴ Before grouting, the equipment floor and concrete foundation surface in contact with the grouting material should be cleaned
and there should be no loose gravel, floating slurry, floating grout, etc. Ash, oil, wax, etc. Before grouting, the base concrete surface should be fully moistened, and before grouting, any accumulated water should be removed.
⑵ When grouting for the second time, grouting should be carried out from one side until it overflows from the other side. Grouting should not be carried out from both opposite sides at the same time. After grouting begins, it must be carried out continuously and the grouting time should be shortened as much as possible.
⑶ When the track foundation or grouting distance is long, construction can be carried out in sections depending on the actual engineering conditions, and the length of each section should not exceed meters. If the equipment floor has a complex structure, pressure grouting should be used.
⑷ Vibration is strictly prohibited during the grouting process. If necessary, a grouting booster can be used. The booster pushes the grouting material along the bottom of the grouting direction. It is strictly prohibited to vibrate from the middle and upper parts of the grouting layer. promote.
⑸ After the equipment foundation grouting is completed, it is advisable to cut the bevel along the edge of the bottom plate toward outsiders after the grouting material has initially set. Calender the surface of the grouting layer
.
Concrete structure modification and reinforcement grouting
⑴The concrete surface in contact with the cement-based grouting material should be fully roughened.
⑵Repair the defects of the concrete structure, The loose concrete should be removed and the steel bars should be exposed, and the edges of the repaired area should be cut into vertical shapes.
⑶ Before grouting, all gravel, dust or other debris should be removed, and the surface of the base concrete should be moistened
br/> surface.
⑷Pour evenly mixed grouting material into the formwork and tap the formwork appropriately.
⑸When the thickness of the grouting layer is greater than 100%, relevant measures should be taken to prevent temperature cracks.
>, Construction and maintenance measures
⑴ During grouting, the average daily temperature should not be lower than ℃. After grouting, the exposed parts should be sprayed with curing agent or covered with plastic film in time, and covered with wet straw bags to keep them moist. When covered with plastic film, the exposed surface of the cement
grouting material should be covered tightly to keep condensation water in the plastic film. When watering is inconvenient on the surface of the grouting material, curing agent can be sprayed.
⑵The grouting material should be kept in a moist state, and the curing time should not be less than.
⑶When using fast-setting and fast-hardening cement-based grouting materials, the curing measures should be carried out according to the method required by the product.
> ⑷ Winter construction, when the project has no special requirements for strength growth, [] after grouting is completed, the exposed parts should be covered with plastic film and insulation materials in time. The initial curing temperature should not be lower than ℃. At negative temperatures Conditions
No watering is allowed during curing.
⑸ When the difference between the surface temperature of the cement-based grouting material and the ambient temperature after the formwork is removed is greater than ℃, it should be covered and cured with
thermal insulation materials.
⑹ If the ambient temperature is lower than the minimum construction temperature required for cement-based grouting materials or the strength needs to increase
faster, artificial heating maintenance can be used. The maintenance measures should comply with the current national standard "Construction Engineering Winter Construction Regulations" Relevant regulations.
Grout
The following requirements should be met during grouting construction
) The material should be poured from one side until it overflows from the other side to facilitate the discharge between the equipment base and the concrete foundation. of air to enrich the grouting, and grouting must not be performed from all four sides at the same time.
) After the grouting starts, it must be carried out continuously without interruption, and the grouting time should be shortened as much as possible.
) It is not advisable to vibrate during the grouting process. If necessary, bamboo slats, etc. can be used for pulling and diversion.
) The thickness of the secondary grouting layer should not exceed.
) Grouting for long equipment or track foundations should be carried out in sections. The length of each section is appropriate.
) If there is water bleeding on the surface during the slurry process, sprinkle a small amount of dry material to absorb the water.
) When grouting the foundation of equipment whose grouting layer is thicker than the large volume, submersibles can be added according to the total ratio when stirring the grouting material, but it needs to be tested to determine whether the groutability can meet the requirements.
) After the foundation grouting is completed, the parts to be removed should be processed before the grouting layer is finally set.
) During the grouting construction process and before demoulding, the grouting layer should be protected from vibration and collision to avoid damage to the unhardened grouting layer.
) The horizontal distance between the formwork and the equipment base should be controlled to the left and right to facilitate grouting construction.
) If grout running occurs during grouting, it should be dealt with in time.
) When the equipment foundation grouting volume is large, mechanical stirring should be used to ensure grouting construction.
, Maintenance
) Within minutes after the grouting is completed, the curing agent should be sprayed immediately or covered with plastic film and covered with rock wool quilts for maintenance, or water should be sprayed and moisturized immediately after the grouting layer is finally set.
) During winter construction, maintenance measures should also comply with the relevant provisions of the current "Code for Acceptance of Construction of Reinforced Concrete Projects".
) Curing time and mold removal schedule under different temperature conditions
Daily minimum temperature (℃) mold removal time and curing time
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Scope of application of grouting materials
Primary grouting and secondary grouting for equipment foundations that require high-precision installation.
Reinforcement bar embedding and anchor bolt anchoring in construction and geotechnical engineering.
Building reinforcement and renovation project, pouring of beam-column joints, deformation joints, and construction joints.
Used in emergency repair construction of roads, bridges, tunnels, airports and other projects.
Anchorage construction of railway sleepers.
Column wet-clad steel reinforcement is used for pouring angle steel and column gap joints.
★Reference usage
The reference usage is calculated on the basis of / cubic meter to calculate the actual usage.
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