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Concrete prefabricated bridge deck slab with plasticizer

A technology of concrete and plasticizer, applied in the field of bridge panels, can solve the problems of complicated construction process and increased cost, and achieve the effects of prolonging setting time, improving surface polarity, and improving compressive strength and tensile strength

Active Publication Date: 2017-05-31
兴义市黔城商品混凝土有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The performance of basic materials in different natural environments cannot meet the requirements of modern construction technologies. Pumping agents, preservatives, rust inhibitors, waterproofing agents, anti-cracking agents, air-tight agents, anti-corrosion agents, Alkali aggregate activity inhibitor, antifreeze agent, water retention, thickening stabilizer, fiber and more than ten kinds of products meet its technical quality requirements, which will not only make the construction process cumbersome, but also significantly increase the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of concrete prefabricated bridge panel with plasticizer is characterized in that: the specific steps of manufacturing the concrete prefabricated bridge panel with plasticizer are as follows:

[0034] Weigh 17 parts by mass of 2-acrylamido-2-methylpropanesulfonic acid, add 156 parts by mass of water and stir evenly for later use; When the temperature rises to 42°C, add 5.2 parts of 2,2'-azobisisobutyronitrile and 2.6 parts of sodium thiosulfate; continue stirring to adjust the pH to 6.5, and when the temperature drops to 30°C, add methyl 22 parts of acryloyloxyethyltrimethylammonium chloride and 14 parts of hexafluorobutyl acrylate, after mixing evenly, add sodium persulfate and continue to stir, adjust the pH to 7.0, fill with nitrogen, and completely remove the air in the container , kept at 35°C for 30 minutes; after the reaction was completed, cooled to room temperature, and ethanol was added dropwise to the cooled reaction product to obtain a white precipitat...

Embodiment 2

[0040] A kind of concrete prefabricated bridge panel with plasticizer is characterized in that: the specific steps of manufacturing the concrete prefabricated bridge panel with plasticizer are as follows:

[0041] Weigh 15 parts by mass of 2-acrylamido-2-methylpropanesulfonic acid and add 160 parts by mass of water to stir evenly for use; When the temperature rises to 42°C, add 5 parts of 2,2'-azobisisobutyronitrile and 3 parts of sodium thiosulfate; continue stirring to adjust the pH to 6.5, and when the temperature drops to 30°C, add methyl 28 parts of acryloyloxyethyltrimethylammonium chloride and 14 parts of hexafluorobutyl acrylate, after mixing evenly, add sodium persulfate and continue to stir, adjust the pH to 7.0, fill with nitrogen, and completely remove the air in the container , kept at 35°C for 30 minutes; after the reaction was completed, cooled to room temperature, and ethanol was added dropwise to the cooled reaction product to obtain a white precipitate, which...

Embodiment 3

[0047] A kind of concrete prefabricated bridge panel with plasticizer is characterized in that: the specific steps of manufacturing the concrete prefabricated bridge panel with plasticizer are as follows:

[0048] Weigh 16 parts by mass of 2-acrylamido-2-methylpropanesulfonic acid, add 155 parts by mass of water and stir evenly for later use; When the temperature rises to 42°C, add 5.3 parts of 2,2'-azobisisobutyronitrile and 2.7 parts of sodium thiosulfate; continue stirring to adjust the pH to 6.5, and when the temperature drops to 30°C, add methyl 24 parts of acryloyloxyethyltrimethylammonium chloride and 13 parts of hexafluorobutyl acrylate, mix evenly, add sodium persulfate and continue stirring, adjust pH=7.0, fill with nitrogen, and completely remove the air in the container , kept at 35°C for 30 minutes; after the reaction was completed, cooled to room temperature, and ethanol was added dropwise to the cooled reaction product to obtain a white precipitate, which was th...

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Abstract

The invention relates to a concrete prefabricated bridge deck slab with a plasticizer, characterized by the following specific steps for manufacturing the concrete prefabricated bridge deck slab with the plasticizer: weighing 15-20 parts by mass of 2-acrylamido-2-methylpropanesulfonic acid, adding 150-160 parts by mass of water and stirring uniformly for later use; adding the prepared 2-acrylamido-2-methylpropanesulfonic acid water solution to a vessel, heating until the temperature rises to 42DEG C, and adding 5-6 parts of 2,2'-azobisisobutyronitrile and 2-3 parts of sodium thiosulfate; and continuing stirring, regulating the pH value to be equal to 6.5, after the temperature drops to 30DEG C, respectively adding 20-30 parts of methacryloyloxyethyl trimethyl ammonium chloride and 10-15 parts of hexafluorobutyl methacrylate, and uniformly mixing. The plasticizer in the concrete prefabricated bridge deck slab improves the surface polarity of cement particles in concrete, promotes dispersion of the cement particles, improves the liquidity of concrete, performs effective moisture holding on concrete, prolongs the setting time of concrete, enables complete hydration reaction of concrete, and improves the compression strength and tensile strength of a concrete slab.

Description

technical field [0001] The invention relates to a concrete prefabricated bridge panel with a plasticizer, belonging to the technical field of bridge panels. Background technique [0002] In modern bridge panels, concrete is an important part of bridge panels. With the rapid development of infrastructure such as modern railways and highways, and advocating the strategic principles of energy saving, emission reduction, low-carbon economy, green environmental protection and sustainable development, bridge panels Higher technical requirements are put forward for strength. The performance of basic materials in different natural environments cannot meet the requirements of modern construction technologies. Pumping agents, preservatives, rust inhibitors, waterproofing agents, anti-cracking agents, airtight agents, anti-corrosion agents, Alkali aggregate activity inhibitor, antifreeze, water retention, thickening stabilizer, fiber and more than ten kinds of products meet its techni...

Claims

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Application Information

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IPC IPC(8): C04B24/16C04B28/00C04B40/04C08F220/34C08F220/22C08F220/58C04B103/30
CPCC04B24/163C04B28/00C04B40/0218C04B40/04C04B2103/30C04B2201/50C08F220/34C04B18/146C04B18/04C04B18/142C04B14/06C04B14/02C04B22/002C04B18/0481C08F220/22C08F220/585
Inventor 张龙
Owner 兴义市黔城商品混凝土有限公司
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