How is the dosage of the bulking agent determined?

Generally, it does not exceed 4% of the weight of cement, and specific problems should also be operated specifically.

Summary. Pro, the calculation method of concrete expansion agent dosage: it is calculated according to the percentage of cement dosage. If the amount of cement is 500 kg, the expansion agent is 500*10% for 50 kg, and the cement amount is still 500 kg.

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Pro, the calculation method of the amount of concrete expansion and old agent: it is calculated according to the percentage of the amount of cement in liters. If the amount of cement is 500 kilograms, the expansion agent is 500*10% for 50 kilograms, and the cement amount is still 500 kilograms.

Concrete expansion agent is used to prepare expanded concrete (including compensating shrinkage concrete and self-stressing concrete), compensating shrinkage concrete has the effect of compensating concrete dry shrinkage and compacting concrete, improving concrete impermeability, and is mainly used in civil engineering to prevent wax water and crack resistance.

The dosage of concrete expansion agent is 10-12% (in terms of cement amount, that is, for concrete that requires higher impermeability and crack resistance, you can test to increase the dosage.) Before the initial setting of the concrete mold, it should be in accordance with the relevant construction regulations, and the concrete surface should be repeatedly wiped and pressed to prevent air drying, so as to avoid cracks caused by settlement, and after the final setting, the maintenance period shall not be less than 12 days. This agent to the construction site should be used after testing with local cement.

The recommended dosage is 8 12%, and the dosage needs to be appropriately increased after the preparation of pouring joints and post-pouring reinforced concrete. The prepared concrete can adopt structural self-waterproofing technology, so that the building beam structure and waterproof function are integrated, and the external waterproofing can be canceled, making the building structure simpler.

The concrete mixing time of the expansion agent should be extended by 30 seconds than the ordinary concrete, the temperature of the concrete should be lower than 30, the free fall distance of the concrete should be controlled within 2 meters when pouring, and the vibration should be uniform, dense, no leakage, no under-vibration, but not vibration. Concrete formulated with expansion agents can be seamlessly designed and constructed using extra-long reinforced concrete, and can also be used for the treatment of post-pouring joints of ordinary concrete.

The amount of bulking agent for each side is 37 kilograms, and the amount of cement is 333 kilograms. 2. Scope of application 1 All concrete projects and components that require anti-cracking and seepage prevention can be used to prepare compensating shrinkage concrete, such as: building basements, underground structures, pools, swimming pools, sewage treatment pools, water towers and storage tanks, subways, tunnels, water conservancy and hydropower, marine engineering and other waterproof structures, rigid waterproof roofs, ultra-long floors, stadium stands, and radiation-proof concrete structures.

2. It can also be used to prepare expanded concrete and expansion mortar for filling, such as: beam-column joints, filling concrete for post-pouring joints, mechanical tung elimination cover preparation and reinforcing secondary bridge skin pouring, etc. 3 It can be used to produce self-stressing concrete pressure pipes used at room temperature.

Summary. The amount of leavening agent used for each side is 37 kilograms, and the amount of cement is 333 kilograms.

2. Scope of application.

1. All concrete projects and components that require anti-cracking and seepage prevention can be used to prepare compensating shrinkage concrete, such as: building basements, underground structures, pools, swimming pools, sewage treatment pools, water towers and storage tanks, subways, tunnels, water conservancy and hydropower, marine engineering and other waterproof structures, rigid waterproof roofs, ultra-long floor slabs, stadium stands, and radiation-proof concrete structures.

Hello. The amount of leavening agent used for each side is 37 kilograms, and the amount of cement is 333 kilograms. 2. Scope of application 1 All concrete projects and components that require anti-cracking and seepage prevention can be used to prepare compensating shrinkage concrete, such as:

Buildings quietly build basements, underground structures, water pools, swimming pools, sewage treatment pools, water towers and storage tanks, subways, tunnels, water conservancy and hydropower, marine engineering and other waterproof structures, rigid waterproof roofs, ultra-long floor cover slag boards, stadium stands, radiation-proof concrete structures.

The calculation formula of the concrete expansion agent is as follows: the dosage of calcium oxide swelling agent is generally 3%-5% of the cement mass, and the dosage of calcium sulfoaluminate cavity swelling agent is generally 8%-12% of the cement mass, and when the expansion rate is large, their dosage should be larger. Bulking agent Songkai e= cp xk ( kg m'Cement c = co-e (kg m'

Wrong. That's the formula.

Concrete, you know.

Knowing the pro. Rubber 340, doped with 13% bulking agent, you calculate.

The formula for calculating pro is dosage (%) expansion agent (cement + expansion agent) 1003