Formula and production process of high-performance concrete antifreeze agent

Abstract

The invention relates to a formula of a high-performance concrete antifreeze agent. Comprising 20%-24% of water, 15%-16% of sodium sulfate, 15%-16% of sodium chloride, 15%-16% of sodium nitrite, 15%-16% of calcium nitrite, 4%-5% of calcium chloride, 2%-3% of calcium sulfonate, 1%-2% of sodium methylene dinaphthalene sulfonate, 0.5%-1% of sodium sulfamate, 0.05%-0.1% of sodium dodecyl benzene sulfonate, 0.01%-0.02% of an active agent, urea and methanol. The production process comprises the following steps: 1) mixing methanol, calcium sulfonate and 1 / 3 of the total amount of water, 2) mixing urea, sodium chloride, calcium chloride, sodium methylene dinaphthalene sulfonate, sodium sulfamate, sodium sulfate and 1 / 3 of the total amount of water, and 3) mixing the rest materials.

Description

Technical Field

[0001] The present invention particularly relates to a formula of a high-performance concrete antifreeze agent and a production process thereof. Background Art

[0002] Concrete antifreeze is mainly used for low-temperature antifreeze during winter construction. It is achieved by lowering the freezing point and ensuring fluidity. In the existing technology, it is often achieved by pre-mixing water reducers and water-inducing agents in concrete. However, this method has an unsatisfactory antifreeze effect, poor low-temperature resistance, and the existence of a liquid phase in concrete under negative temperature conditions is not ideal. Summary of the Invention

[0003] The technical problem to be solved by the present invention is: in order to overcome the deficiencies of the prior art, a formula of a high-performance concrete antifreeze agent and a production process thereof are provided.

[0004] The technical solution adopted by the present invention to solve the technical problem is: a formula of a high-performance concrete antifreeze agent, comprising 20%-24% of water, 15%-16% of sodium sulfate, 15%-16% of sodium chloride, 15%-16% of sodium nitrite, 15%-16% of calcium nitrite, 4%-5% of calcium chloride, 2%-3% of calcium sulfonate, 1%-2% of sodium methylene dinaphthalene sulfonate, 0.5%-1% of sodium aminosulfonate, 0.05%-0.1% of sodium dodecylbenzene sulfonate, 0.01%-0.02% of an active agent, urea and methanol;

[0005] Among them, the ratio of sodium sulfate, sodium chloride, sodium nitrite and calcium nitrite is 1:1:1:1;

[0006] The ratio of urea to methanol is 1:1;

[0007] The total of the allocation ratios of each group is 100%.

[0008] Preferably, the calcium sulfonate is calcium lignin sulfonate.

[0009] Preferably, the active agent is the fluorocarbon surfactant FN-3.

[0010] Preferably, 0.01% vitamin C or 0.01% vitamin D is also included.

[0011] A production process for producing a high-performance concrete antifreeze agent comprises the following steps:

[0012] 1) Methanol, calcium sulfonate, and 1 / 3 of the total amount of water were mixed, and stirred at a speed of 200-300 rpm for 5 minutes to obtain a mixture A;

[0013] 2) urea, sodium chloride, calcium chloride, sodium methylene dinaphthalenesulfonate, sodium sulfamate, sodium sulfate and 1 / 3 of the total amount of water were mixed and stirred at a speed of 200-300 rpm for 5 minutes to obtain a mixture B;

[0014] 3) Mix the remaining materials and stir at a speed of 60-80 rpm for 5 minutes to obtain a mixture C;

[0015] 4) The mixtures A, B, and C were mixed, and then stirred at a speed of 100-120 rpm for 30 minutes to obtain the target material.

[0016] Preferably, the mixing temperature in step 1) is 18-20°C;

[0017] Preferably, the mixing temperature in step 2) is 26-30°C;

[0018] Preferably, the mixing temperature in step 3) is 25-28°C.

[0019] The beneficial effects of the present invention are that the formula of the high-performance concrete antifreeze agent and its production process use calcium salt, sodium salt and nitrite as basic materials, utilize the reaction of methanol and urea to form urea-formaldehyde resin, and add calcium lignin sulfonate with a water-reducing effect, thereby enhancing the water-reducing and air-entraining effect of the antifreeze agent, reducing the flow loss of concrete under low temperature conditions, and improving the low-temperature resistance effect. DETAILED DESCRIPTION

[0020] Example 1:

[0021] A formula for a high-performance concrete antifreeze agent, comprising 20% ​​water, 15% sodium sulfate, 15% sodium chloride, 15% sodium nitrite, 15% calcium nitrite, 4% calcium chloride, 2% calcium sulfonate, 1% sodium methylene dinaphthalene sulfonate, 0.5% sodium aminosulfonate, 0.05% sodium dodecylbenzene sulfonate, 0.01% active agent, urea, and methanol;

[0022] Among them, the ratio of sodium sulfate, sodium chloride, sodium nitrite and calcium nitrite is 1:1:1:1;

[0023] The ratio of urea to methanol is 1:1;

[0024] The total of the allocation ratios of each group is 100%.

[0025] Preferably, the calcium sulfonate is calcium lignin sulfonate.

[0026] Preferably, the active agent is the fluorocarbon surfactant FN-3.

[0027] Preferably, 0.01% vitamin C or 0.01% vitamin D is also included.

[0028] The production process includes the following steps:

[0029] 1) Methanol, calcium sulfonate, and 1 / 3 of the total amount of water were mixed, and the mixture was stirred at 200 rpm for 5 minutes to obtain a mixture A;

[0030] 2) urea, sodium chloride, calcium chloride, sodium methylene dinaphthalenesulfonate, sodium sulfamate, sodium sulfate and 1 / 3 of the total amount of water were mixed and stirred at a speed of 200 rpm for 5 minutes to obtain a mixture B;

[0031] 3) Mix the remaining materials and stir at 60 rpm for 5 minutes to obtain a mixture C;

[0032] 4) Mix the mixtures A, B and C and stir at a speed of 100 rpm.

[0033] The reaction time was 30 minutes, thereby obtaining the target material.

[0034] Preferably, the mixing temperature in step 1) is 18°C;

[0035] Preferably, the mixing temperature in step 2) is 26°C;

[0036] Preferably, the mixing temperature in step 3) is 25°C.

[0037] The data from the four experiments were as follows: the fluidity losses after 2 hours were 29%, 19%, 18% and 22% respectively.

[0038] Example 2:

[0039] A high-performance concrete antifreeze agent comprises 24% water, 16% sodium sulfate, 16% sodium chloride, 16% sodium nitrite, 16% calcium nitrite, 5% calcium chloride, 3% calcium sulfonate, 2% sodium methylene dinaphthalene sulfonate, 1% sodium aminosulfonate, 0.1% sodium dodecylbenzene sulfonate, 0.02% active agent, urea and methanol;

[0040] Among them, the ratio of sodium sulfate, sodium chloride, sodium nitrite and calcium nitrite is 1:1:1:1;

[0041] The ratio of urea to methanol is 1:1;

[0042] The total of the allocation ratios of each group is 100%.

[0043] Preferably, the calcium sulfonate is calcium lignin sulfonate.

[0044] Preferably, the active agent is the fluorocarbon surfactant FN-3.

[0045] Preferably, 0.01% vitamin C or 0.01% vitamin D is also included.

[0046] The production process includes the following steps:

[0047] 1) Methanol, calcium sulfonate, and 1 / 3 of the total amount of water were mixed, and the mixture was stirred at 300 rpm for 5 minutes to obtain a mixture A;

[0048] 2) urea, sodium chloride, calcium chloride, sodium methylene dinaphthalenesulfonate, sodium sulfamate, sodium sulfate and 1 / 3 of the total amount of water were mixed and stirred at a speed of 300 rpm for 5 minutes to obtain a mixture B;

[0049] 3) Mix the remaining materials and stir at 80 rpm for 5 minutes to obtain a mixture C;

[0050] 4) Mix the mixtures A, B and C and stir at a speed of 120 rpm.

[0051] The reaction time was 30 minutes, thereby obtaining the target material.

[0052] Preferably, the mixing temperature in step 1) is 20°C;

[0053] Preferably, the mixing temperature in step 2) is 30°C;

[0054] Preferably, the mixing temperature in step 3) is 28°C.

[0055] The data from the four experiments were as follows: the fluidity losses within 2 hours were 21%, 18%, 16% and 23% respectively.

[0056] Compared with the existing technology, the formula and production process of this high-performance concrete antifreeze agent use calcium salt, sodium salt and nitrite as basic materials, utilize the reaction of methanol and urea to form urea-formaldehyde resin, and add calcium lignin sulfonate with water-reducing effect, which enhances the water-reducing and air-entraining effect of the antifreeze agent, reduces the flow loss of concrete under low temperature conditions, and improves the anti-low temperature effect.

[0057] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A formula of a high performance concrete antifreeze agent, characterized in that: The invention comprises 20%-24% water, 15%-16% sodium sulfate, 15%-16% sodium chloride, 15%-16% sodium nitrite, 15%-16% calcium nitrite, 4%-5% calcium chloride, 2%-3% calcium sulfonate, 1%-2% sodium methylene dinaphthalene sulfonate, 0.5%-1% sodium aminosulfonate, 0.05%-0.1% sodium dodecylbenzene sulfonate, 0.01%-0.02% active agent, urea and methanol; Among them, the ratio of sodium sulfate, sodium chloride, sodium nitrite and calcium nitrite is 1:1:1:1; The ratio of urea to methanol is 1:1; The total of the allocation ratios of each group is 100%.

2. The formula of the high performance concrete antifreeze agent according to claim 1, characterized in that: The calcium sulfonate is calcium lignin sulfonate.

3. The formula of the high performance concrete antifreeze agent according to claim 1, characterized in that: The active agent is a fluorocarbon surfactant FN-3.

4. The formula of the high performance concrete antifreeze agent according to claim 1, characterized in that: Also includes 0.01% Vitamin C or 0.01% Vitamin D1.

5. A production process for producing the high performance concrete antifreeze agent according to any one of claims 1 to 4, characterized in that: The following steps are involved: 1) Mixing methanol, calcium sulfonate and 1 / 3 of the total amount of water, stirring at a speed of 200-300 rpm for 5 minutes to obtain a mixture A; 2) urea, sodium chloride, calcium chloride, sodium methylene dinaphthalene sulfonate, sodium sulfamate, sodium sulfate and 1 / 3 of the total amount of water are mixed, and stirred at a speed of 200-300 rpm for 5 minutes to obtain a mixture B; 3) mixing the remaining materials and stirring at a speed of 60-80 rpm for 5 minutes to obtain a mixture C; 4) The three mixtures of A, B and C are mixed, and then stirred at a speed of 100-120 rpm for 30 minutes to obtain the target material.

6. The production process for producing a high performance concrete antifreeze agent according to claim 5, characterized in that: The mixing temperature of step 1) is 18-20°C.

7. The production process for producing a high performance concrete antifreeze agent according to claim 5, characterized in that: The mixing temperature of step 2) is 26-30°C.

8. The production process for producing a high performance concrete antifreeze agent according to claim 5, characterized in that: The mixing temperature of step 3) is 25-28°C.