Super-strength steel-fiber cement-based material inspection well lid and making method thereof

A technology of cement-based materials and fiber cement, which is applied in water conservancy projects, underwater structures, infrastructure engineering, etc., can solve problems such as easy theft and high noise, and achieve convenient operation, good wear resistance, and good anti-theft performance Effect

Inactive Publication Date: 2015-08-12
QINGDAO TECHNOLOGICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing technology, aiming at the shortcomings of the traditional cast iron manhole cover, such as being easy to be stolen, not resistant to complex environment erosion, and loud noise when vehicles pass by, and seeks to design and provide a super high-strength steel fiber cement-based material manhole The cover and its preparation method use ultra-high-strength steel fiber cement-based materials, and use large-scale concrete product molding machines for high-pressure compression molding. After high-temperature curing, an ultra-high-strength steel fiber cement-based material with high strength, corrosion resistance, impact resistance, and wear resistance is obtained. Material manhole cover

Method used

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  • Super-strength steel-fiber cement-based material inspection well lid and making method thereof
  • Super-strength steel-fiber cement-based material inspection well lid and making method thereof
  • Super-strength steel-fiber cement-based material inspection well lid and making method thereof

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Effect test

Embodiment 1

[0032] In this embodiment, the ultra-high-strength steel fiber cement-based material is composed of P.I.52.5 cement, S95 grade slag powder, machine-made sand, chemical admixture, ultra-fine steel fiber and water, and the ultra-high-strength steel fiber cement-based material per cubic meter of the cementitious material The mass occupied is one quality unit, among which P.I.52.5 cement accounts for 0.7 of the unit cementing material, S95 grade slag powder accounts for 0.3 of the unit cementing material, water accounts for 0.2 of the unit cementing material, and machine-made sand accounts for 1.0 of the unit cementing material , the chemical admixture accounts for 0.02 of the unit cementitious material, and the superfine steel accounts for 0% of the unit cementitious material. First, dry mix cement, slag powder and machine-made sand for 1 to 2 minutes to obtain the dry mixture, and then add the chemical admixture Add the dry mix into the mixing water, stir for 1-5 minutes to form ...

Embodiment 2

[0034]The ultra-high-strength steel fiber cement-based material used in this embodiment is a molding material made of P.I.52.5 cement, S95 grade slag powder, machine-made sand, chemical admixtures, ultra-fine steel fibers and water. The mass of steel fiber cement-based materials is a mass unit, of which cement accounts for 0.8 per unit of cementitious material, S95 grade slag powder accounts for 0.2 per unit of cementitious material, machine-made sand accounts for 1.2 per unit of cementitious material, and water accounts for 0.8 per unit of cementitious material. 0.22 of the material, chemical admixtures account for 0.018 of the unit cementing material, and ultra-fine steel fiber cement accounts for 5% of the unit cementing material. First dry mix the cement, slag powder and machine-made sand for 0-2 minutes to obtain the dry mixture. Then add the chemical admixture into the dry mixture, stir for 1-5 minutes to form a cement-based material, then add the weighed ultra-fine steel...

Embodiment 3

[0036] The ultra-high-strength steel fiber cement-based material used in this embodiment is a molding material made of P.I.52.5 cement, S95 grade slag powder, machine-made sand, chemical admixtures, ultra-fine steel fibers and water. The mass of steel fiber cement-based materials is one mass unit, and its cement accounts for 0.6 of the unit cementing material, S95 grade slag powder accounts for 0.4 of the unit cementing material, machine-made sand accounts for 1.2 of the unit cementing material, and water accounts for 0.6 of the unit cementing material. 0.18 of the material, 0.022 of the chemical admixture of the unit cementing material, and 15% of the ultra-fine steel fiber of the unit cementing material. Add the chemical admixture into the dry mixture, stir for 1-5 minutes to form a cement-based material, then add the weighed ultra-fine steel fiber into the cement-based material and stir for 1-5 minutes to prepare the ultra-fine steel fiber cement-based material, The obtaine...

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Abstract

The invention belongs to the technical field of inspection well lid making, and relates to a super-strength steel-fiber cement-based material inspection well lid and a making method thereof. Anti-skid strips are arranged on the surface of a lid body. Installation holes are formed in the two sides of the middle of the surface of the lid body. Steps of a three-layer structure are formed on the bottom face of the lid body from inside to outside. Arc chamfers are formed at the corners between the adjacent steps. The making method includes the steps that cement, slag powder and machine-made sand are dryly mixed to obtain dryly-mixed materials, then chemical additives and water are mixed to be added into the dryly-mixed materials to be stirred to form cement-based materials, ultra-fine steel fibers are added into the cement-based materials to be stirred, ultra-fine steel fiber cement-based materials are made to be poured into an inspection well lid mold, the inspection well lid mold with the ultra-fine steel fiber cement-based materials is pressed to be maintained, and the super-strength steel-fiber cement-based material inspection well lid is made. By means of the super-strength steel-fiber cement-based material inspection well lid and the making method, the structure is simple and practical, operation is convenient, the labor resources are saved, and the made inspection well lid is high in pressing resisting strength, low in making cost and good in anti-theft performance.

Description

Technical field: [0001] The invention belongs to the technical field of manhole cover preparation, and relates to a manhole cover made of ultra-high-strength steel fiber cement base material and a preparation method thereof. The prepared manhole cover is suitable for sealing the top of a wellhead of a road inspection well, and can replace the existing widely used cast iron manhole cover . Background technique: [0002] With the acceleration of urban construction and the improvement of people's living standards, the requirements for urban construction have increased, and the construction of road inspection shafts has become a key part. Road inspection well refers to the vertical structures used to connect, inspect, maintain pipelines and install equipment in various underground pipeline facilities such as electric power, communication, gas, heating, water supply, drainage, cable television, traffic signals and monitoring. Composed of base, well body, well neck and manhole co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D29/14C04B28/04C04B14/48
Inventor 张宇金祖权赵铁军
Owner QINGDAO TECHNOLOGICAL UNIVERSITY
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