What is the unit of strength of the grouting material?

When it comes to grouting manufacturers, Shanghai Kehong new building materials can be learned. Shanghai Kehong New Building Materials is a modern enterprise integrating development, production, sales and management. Our company specializes in the production of high-strength non-shrinkage grout, the main products are artesian, early strength, micro-expansion, high-strength non-shrinkage grout, epoxy resin grout, polymer mortar, polymer repair mortar, polymer cement waterproof mortar, polymer anti-cracking mortar, prestressed channel grout, ground polymer grout, ultra-fine cement, building structure reinforcement material, etc.

The company is located in the greater Shanghai Economic Circle, since its establishment more than ten years, through technological innovation, improve the operation and management of enterprises, customers have spread throughout Jiangsu, Shandong, Henan, Zhejiang...

1. Steel structure foundation, joint filling and grouting.

2. Fixed grouting of anchor bolts and anchor bolt bases of mechanical equipment.

3. Bridge base, support pad concrete surface layer, rock foundation grouting.

4. Diaphragm wall, reverse wall column, basement wall panel, and then seismic wall.

5. Rapid repair grouting of steel mills, power plants, machinery factories, etc.

6. Rapid maintenance and repair of bridge decks, expansion joints, pavement, and airport runways.

7. Repair of missing corners and cracks of track slabs and prefabricated cement products. Stirring: Weigh the powder and water according to the specified amount, put the powder into the machine, start the mixer and add water (if you use a bucket to stir, first add water to the bucket, start the mixer, slowly add the powder), stir for 3-4 min, put it for 1-2 min and stir for 1min before use.

Filling: The foundation surface and the bottom surface of the equipment foundation must be clean and free of oil, mud and other attachments and sundries, and the foundation surface should be fully moistened with water 6-12 hours before filling, and there should be no water accumulation. The grouting is filled with self-weight pressure method or pump pressure method, and the grouting is continuously poured and filled from one side as much as possible until the other side overflows, and bamboo slats and other diversion are used if necessary.

Curing: After the completion of the perfusion construction, the equipment and grouting layer shall not be vibrated and collided within 24h, and the surface shall be calendered before the final setting of the non-shrinkage grouting material (2-4) h, and the wet cloth bag or straw bag should be covered after the final setting, so as to avoid strong sunlight, and sprinkle water for curing, 4-6 times a day. The curing temperature should be (15-30), and the curing period is 7 to 14 days.

Retest methods and materials.

1) The fluidity, vertical expansion rate, compressive strength and condensation time test of jumping table are carried out in accordance with the relevant provisions of GB8077-87, GBLL9-88 and GBL77-85 respectively.

2) The bonding strength of the steel bar is a steel pipe with a length of 220mm and a diameter of 68mm. Seal the bottom. Insert 16mm diameter round rebar or threaded rebar into ** respectively, and the insertion depth is 190mm.

Then the CGM grouting material stirred with water is filled with the steel pipe, smoothed, and cured to the required age to determine the bond strength.

3) The low-temperature performance test is maintained according to the method of national standard antifreeze and the strength is determined.

4) CGM equipment grouting material is produced by the building materials factory of the Metallurgical Construction Institute.

5) Mix water, tap water. 2CGM PropertiesThe material used for equipment grouting is a special hybrid material with high fluidity, early strength, high strength and micro-expansion. It is composed of special cementitious materials, intumescent materials, admixtures and high-strength aggregates

Due to the needs of engineering construction, it should also have other properties such as: setting time, oil permeability resistance and low temperature resistance.

MPa, generally speaking, is compressive strength.

MPa, generally speaking, is compressive strength.

The grouting material is made of high-strength material as aggregate, cement as binder, supplemented by high fluidity, micro-expansion, anti-segregation and other substances. It is ready to use after adding a certain amount of water to the construction site and stirring it evenly.

The grouting material has good self-flowing, fast hardness, early strength, high strength, no shrinkage, and micro-expansion; Non-toxic, harmless, non-aging, non-polluting to water quality and surrounding environment, good self-tightness, rust-proof and other characteristics. In terms of construction, it has the advantages of reliable quality, reduced cost, shortened construction period and convenient use. Fundamentally change the force of the equipment base, so that it can evenly bear the full load of the equipment, so as to meet the installation requirements of various mechanical and electrical equipment (heavy equipment high-precision grinding machines), and is an ideal grouting material in the era of padless installation.

Three Lions Special Cement, high-strength grouting can reach more than 60MPa, and sleeve grouting can reach more than 80MPa.

The maximum strength of high-strength grout can reach C75

The H-60 grout material of Nanjing Xingzhu Building Materials has a strength of more than 40MPa in seven days

The seven-day strength of 60 is above 58.

7 days can probably bring to the C40 no problem, of course there may be better.

Greater than or equal to 60MPa (shield building materials can be consulted).

The grouting material has the characteristics of high strength, no shrinkage, and easy construction. There are two main indicators of grout, compressive strength and tensile strength, what is the relationship between the two?

The tensile strength of the grouting material increases with the increase of compressive strength, but the increase gradually decreases. In other words, the higher the compressive strength of the grout, the smaller the tensile compression ratio. The tensile and compression ratio of low-strength grouting is about 10%, that of medium-strength grouting is about 8%-9%, and that of high-strength grouting is about 7%.

The relationship between compressive strength and tensile compression ratio can be determined by a number of factors that affect the nature of the grouting matrix and the interface transition zone. Curing time and grout mix properties such as water-glue ratio, aggregate type and admixture affect the tensile and compression ratio to varying degrees. For example, after 1 month of curing, the tensile strength of the grout increases more slowly than the compressive strength, so the tensile compression ratio decreases with the curing time.

In the case of the same curing age, the tensile pressure ratio decreases with the decrease of the water-glue ratio.

The grouting material containing calcareous aggregate or mineral admixture can also obtain a higher tensile compression ratio when the compressive strength is higher after full curing. Some researchers have found that the tensile and compression ratio of high-strength grouting material mixed with fly ash is large.

The above is the relationship between the compressive strength and tensile strength of the grout. High-strength non-shrinkage grout is suitable for all kinds of building structure reinforcement, repair, improve bearing capacity, enhance the use function, meet the use requirements, in the construction has the advantages of reliable quality, cost reduction, shortened construction period and convenient use, etc., is more and more widely used in all kinds of projects.

Grouting material is a dry material for matching grouting sleeve connection in construction industrialization, generally configured according to the relationship between water and material ratio of 1:10 (but the actual operation may be a little thinner, otherwise it will dry very quickly, and it is difficult to graft), the strength of grouting material is extremely high, and the strength after hardening can reach more than 90MPa, which is three times the strength of general concrete (taking C30 concrete as an example), and their strength grade mechanical properties are the same, all are pressure values, but the strength of concrete is made into a 100mm square test block, The grouting material is made into a 40*40*160mm strip, which is the same as the test method for detecting cement, except that the cement test strip needs to be compacted, and the grouting test strip does not need to be compacted.

Yes, different models are needed for different thicknesses, depending on what you need.

There is no difference, they are all used for perfusion equipment, and at most the models are different.

At present, this is only divided into models, and there is no specific difference, which is equivalent to the feeling of nokiae72 and e63; are all mobile phones, but the relative hardness will be a little different, and if you don't understand the specific place, it is recommended that you ask the relevant manufacturer; At present, the commonly used is CGM.

It's just a name, and you can choose the type of product you want to use according to your specific requirements.

It is estimated that there is no difference, they are all used for perfusion equipment, and they are not the same, at most the models are different, find a manufacturer** and ask.