Method for producing prestress high-intensity concrete (PHC) pipe piles by glass-doped powder
A technology of high-strength concrete and glass powder, applied in sheet pile walls, ceramic molding machines, buildings, etc., to save resources, improve economic and social benefits, and reduce pollution
Inactive Publication Date: 2014-06-11
蒋元海
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Problems solved by technology
Glass powder is the powder material that the corners of the glass sheet are ground by the grinding wheel during the grinding process of the glass sheet. It is a waste of the glass product processing industry. The SiO2 in the glass powder 2 65% to 75%; mixed with glass powder to replace cement in a certain proportion and equivalent to produce prestressed high-strength concrete pipe piles, there is no report
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment 1
[0008] Embodiment 1. produce the AB type prestressed high-strength concrete pipe pile with an outer diameter of 400 mm and a wall thickness of 95 mm. The specific surface area is 430m 2 The equal amount of glass powder per kg replaces 30% of 52.5 grade P II type Portland cement (the amount of glass powder is 150kg / m 3 , the amount of cement is 350kg / m 3 ). Mix these two materials together with sand, gravel, concrete high-efficiency water reducer, water, etc. in a forced concrete mixer for 150 seconds, and then feed the mixture into the pipe pile steel form that has been cleaned and prestressed steel bars have been placed In the lower half of the mold, close the upper half of the pipe pile steel mold and then stretch the prestressed steel bars. Place the steel mold on a centrifuge for centrifugation. After the centrifugation, perform 90°C and 7 hours of atmospheric pressure steam curing; The demoulding strength of the concrete after atmospheric steam curing is 46MPa; then th...
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Abstract
The invention relates to a method for producing prestress high-intensity concrete (PHC) pipe piles by glass-doped powder. Glass powder with the specific surface area being greater than or equal to 350m<2> / kg is adopted for equivalently replacing 5 percent to 35 percent of high-grade portland cement or ordinary portland cement with the level being higher than 42.5 level, and PHC pipe pile products with the qualified quality can be produced through processes of raw material proportioning, stirring, material distribution, mold matching, prestress tensioning, centrifugal shaping, normal pressure steam maintenance, high-pressure steam maintenance and the like. The method has the advantages that glass waste materials are utilized, the resources are saved, the pollution of glass powder on the environment is reduced, and good economic benefits and social benefits are realized.
Description
technical field [0001] The invention relates to a production method of prestressed high-strength concrete pipe piles. Background technique [0002] In the prior art, prestressed high-strength concrete pipe piles (referred to as PHC pipe piles) adopt the centrifugal forming process, the concrete strength grade of the pile body shall not be lower than C80, and the cementing material used for production is high-grade portland cement above grade 42.5 or ordinary Portland cement. In the invention patent 95116762.6, the method of "production of pretensioned prestressed high-strength concrete pipe piles by mixing fine construction sand" is proposed. Glass powder is the powder material that the corners of the glass sheet are ground by the grinding wheel during the grinding process of the glass sheet. It is a waste of the glass product processing industry. The SiO2 in the glass powder 2 It is 65%~75%; There is no report on the production of prestressed high-strength concrete pipe p...
Claims
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IPC IPC(8): B28B21/30B28B11/24E02D5/58
CPCB28B21/30B28B11/245C04B28/04E02D5/30E02D5/58E02D2250/0007E02D2250/0046E02D2300/002
Inventor 蒋元海
Owner 蒋元海