CN113072334A

CN113072334A - Method for manufacturing anti-freezing resin concrete ultrathin well cover

Info

Publication number: CN113072334A
Application number: CN202010009009.4A
Authority: CN
Inventors: 孟宪强; 牛伯羽; 杨旭姣; 马光述; 王显利; 李春风; 吴昊天
Original assignee: Beihua University
Current assignee: Beihua University
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2021-07-06

Abstract

With the development of science and technology, a lot of traditional falling-behind municipal public facility cast iron water supply and drainage well covers begin to be eliminated, and replace resin concrete well covers, but in winter seasons in northern areas, the resin concrete well covers have common problems, and the weather is always cold, so that the resin concrete well covers and the strength of the vehicle grinding performance are reduced.

Description

Method for manufacturing anti-freezing resin concrete ultrathin well cover

Technical Field

The invention relates to the field of municipal engineering, in particular to a novel field of a well cover capable of replacing cast iron.

Technical Field

The well lid of water supply and drainage of many municipal administration public facilities is cast iron, the cast iron well lid divide into nodular cast iron well lid and grey cast iron well lid, these well lids not only consume the iron ore resource in a large number in the use, and also stolen easily, the resin well lid has light weight high strength, fatigue resistance can be good, breakage safety, the shaping is simple, the car grinds advantages such as noise low, chemical corrosion resistance is good, acid and alkali resistance is good and outward appearance is pleasing to the eye, its comprehensive properties and economic indicator have surpassed the cast iron well lid, and can also solve the stolen problem of cast iron well lid, can also reduce the consumption of resource simultaneously, have important economic and social value.

Disclosure of Invention

The invention relates to a special composite resin portland cement prepared by a chemical method, which thoroughly solves the problems of poor durability and frost resistance of resin well covers, poor vehicle rolling resistance in winter in northern areas and the like.

The simple inorganic cementing material is high in compressive strength and low in breaking strength after being hydrated, so that the well lid is poor in vehicle-grinding resistance, a unique concrete additive is manufactured firstly, various comprehensive properties of the well lid are improved, the parts by weight are taken as unit mass, 0.1-0.2 part of dilute hydrochloric acid, 1-2 parts of methyl chloropalmitolate, 0.5-1 part of triisooctyl trimellitate, 3-5 parts of N.N-dimethylformamide, 5-10 parts of tricresyl phosphate TCP, 4-8 parts of nano silicon dioxide solution, 4-8 parts of sodium dodecyl benzene sulfonate and 1-4 parts of L-glutamic acid are mixed with 40-50 parts of water to form liquid after copolymerization reaction of the materials, and a unique chemical additive solution is manufactured.

The concrete mixture is toughened, and by taking the mass parts as units, 2-4 parts of magnesium phosphate, 2-6 parts of polysorbate, 2-6 parts of butadiene, 5-10 parts of styrene, 2-6 parts of benzyl alcohol, 5-10 parts of polyvinyl butyral, 15-25 parts of acrylonitrile, 2-5 parts of sucrose ester, 15-20 parts of ultrafine silicon dioxide, 10-20 parts of cassava powder and 150 parts of 42.5 silicate cement are mixed to form a cementing material, a unique chemical additive solution is added to mix into a cement slurry, and materials such as sand, stone, steel fiber and the like are respectively added according to a certain proportion to prepare the newly mixed resin concrete.

The mixed concrete is filled into a mold with a pre-tensioning force, the diameter of a tensioned prestressed steel bar in the mold is 6MM, and the tensioned steel bar is provided with non-equal-proportion threads so as to increase the friction force between the steel bar and the concrete, and the tensioned steel bar is broken after being cured and molded for 3 days.

Detailed Description

Taking the part ratio as unit mass, 0.1-0.2 part of dilute hydrochloric acid, 1-2 parts of methyl chloro-palm oil, 0.5-1 part of triisooctyl trimellitate, 3-5 parts of N, N-dimethylformamide, 5-10 parts of TCP (transmission control protocol), 4-8 parts of nano-silica solution, 4-8 parts of sodium dodecyl benzene sulfonate and 1-4 parts of L-glutamic acid, and mixing the materials with 40-50 parts of water after copolymerization reaction to form liquid so as to prepare the special chemical additive solution.

The concrete mixture is toughened, by mass, 2-4 parts of magnesium phosphate, 2-6 parts of polysorbate, 2-6 parts of butadiene, 5-10 parts of styrene, 2-6 parts of benzyl alcohol, 5-10 parts of polyvinyl butyral, 15-25 parts of acrylonitrile, 2-5 parts of sucrose ester, 15-20 parts of ultrafine silica, 10-20 parts of cassava powder and 100-150 parts of 42.5 silicate cement are mixed to form a cementing material, a unique chemical additive solution is added to mix into a cement slurry, materials such as sand, stone, steel fiber and the like are respectively added according to a certain proportion to prepare newly mixed resin concrete, and the resin concrete is filled into a well cover mould to be maintained and molded.

Claims

1. A method for manufacturing a frost-resistant resin concrete ultrathin well lid is characterized by comprising the following steps:

(1) chemical admixture solution preparation: taking the mass portion ratio as a unit, 0.1-0.2 parts of dilute hydrochloric acid, 1-2 parts of methyl chloro-palm oil, 0.5-1 part of triisooctyl trimellitate, 3-5 parts of N, N-dimethylformamide, 5-10 parts of TCP (transmission control protocol), 4-8 parts of nano-silica solution, 4-8 parts of sodium dodecyl benzene sulfonate and 1-4 parts of L-glutamic acid are mixed with 40-50 parts of water to form liquid after copolymerization reaction, and then the chemical additive solution is prepared.

(2) The resin concrete ultrathin well lid according to claim 1 is also required to be toughened, and the resin concrete ultrathin well lid is prepared by mixing, by mass, 2-4 parts of magnesium phosphate, 2-6 parts of polysorbate, 2-6 parts of butadiene, 5-10 parts of styrene, 2-6 parts of benzyl alcohol, 5-10 parts of polyvinyl butyral, 15-25 parts of acrylonitrile, 2-5 parts of sucrose ester, 15-20 parts of superfine silica, 10-20 parts of cassava powder and 100-150 parts of 42.5 portland cement into a cementing material, mixing the cementing material with the chemical additive of (1), mixing 40-60 parts of the chemical additive solution, adding sand and stones according to a certain mass ratio after mixing, mechanically stirring uniformly, filling the mixture into an ultrathin well lid mold, maintaining, molding and demolding.