Prefabricated part production technology based on UHPC
A technology for prefabricated components and production processes, applied in the direction of manufacturing tools, ceramic molding machines, etc., can solve the problems of no production process flow and immaturity, and achieve the effect of smooth and beautiful appearance, high fluidity, and lightweight components
Inactive Publication Date: 2019-12-13
GUANGZHOU FIRST MUNICIPAL ENG CO LTD
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[0024] The present invention will be further described in detail below in conjunction with the examples.
[0025] 1. Stirring of the mixture:
[0026] UHPC raw materials are powder materials before mixing (the main components include cement, quartz sand, fly ash, etc., mixed according to a certain ratio), without any coarse aggregate. The raw materials are dry-mixed and prepared by the manufacturer and then transported to the mixing station. According to the characteristics of raw materials, the hopper of mixing equipment cannot use the batching hopper used in general concrete. It is necessary to use a sealed bag with better sealing performance, and carry it to the mixer after accurate weighing, and then pour the powdery material into the mixing equipment.
[0027] Since the amount of water has an important influence on the mechanical properties of UHPC materials, in order to accurately control the amount of water added during stirring, it is necessary to accurately weigh the...
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Abstract
The invention relates to a prefabricated part production technology based on UHPC. The production technology comprises the following technology steps that firstly, active dry powder is poured into a horizontal stirring machine according to the ratio requirement, a proper amount of water is added according to the water cement ratio, and the stirring machine is started to stir the mixture; secondly,whether mixture mobility meets the requirement or not is observed, steel fiber is mixed according to the strength requirement, and the mixture continues to be stirred for 3-4 minutes; thirdly, afterstirring is completed, the mixture is discharged from a discharging hopper and conveyed to a pouring place to be poured, and a prefabricated part is poured; fourthly, after pouring is completed, the prefabricated part is kept at the normal temperature state, and meanwhile, a test block sample with the same condition is taken; fifthly, whether the strength meets the requirement or not is checked, amould is disassembled, and steam maintaining is carried out; and sixthly, steam maintaining is carried out. The prefabricated part production technology based on the UHPC is reasonable and efficient,the requirement of engineering practice can be met, experience is accumulated for similar construction projects, and the construction method summarized and formed by the achievement is particularly applicable to prefabrication production of small parts.
Description
technical field [0001] The invention relates to the technical field of prefabricated component production, in particular to a UHPC-based prefabricated component production process. Background technique [0002] High-strength performance concrete (UHPC—UltraHigh Performance Concrete) refers to a fiber-reinforced cement-based composite material with ultra-high impermeability and mechanical properties. It is immature and has not formed a relatively efficient production process, so it needs to be improved urgently. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a UHPC-based prefabricated component production process. [0004] In order to solve the above technical problems, the technical solution provided by the present invention is: a UHPC-based prefabricated component production process, including the following process steps: [0005] S1. Pour the active dry powder i...
Claims
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IPC IPC(8): B28B1/52B28B11/24C04B28/00
CPCB28B1/523B28B11/245C04B28/00C04B14/06C04B18/08
Inventor 袁卫国严俊刚李贲陈海英曾祥茂陆文辉杨钦南彭俊青陈志健冯静立陈昂
Owner GUANGZHOU FIRST MUNICIPAL ENG CO LTD