Method for producing water conservancy concrete wrest block and four-pin hollow block by using pipe pile wastewater slurry

Abstract

The invention relates to a method for producing armour block and hollow block with four legs of water conservancy concrete by utilizing tubular pile waste water slurry. The method mainly comprises the steps that: concrete, medium sand and gravel are launched into a concerete mixer to be mixed for 30 seconds to 60 seconds according to proportion by weight; and then the tubular pile waste water slurry is added when stirring; the quantity of the water slurry added into is subject to slump constant of the concrete mix which is between 30 mm to 120mm; the concrete mix is produced after the wet mixture is acted for 30 to 60 seconds. And then the concrete mix is launched into a prefabricated-part mould; a concentrated vibro is adopted for processing, and the distance between vibro points is 0.8 times to 1.2 times of the working radius of a vibrating spear. When in pouring, the concrete mix needs to be processed for pouring layer upon layer in the mould in a horizontal plane rising way. At last maintenance is processed according to a conventional maintenance process method. Aiming at the mechanical property requirements of the concrete water conservancy prefabricated-part, the pressive strength grade of the produced concrete water conservancy prefabricated-part is C30 through improving the mix proportion of the concrete and the pouring technology; the appearance quality measures up to the standard requirements.

Description

Technical field: [0001] The invention relates to a method for preparing concrete prefabricated components, in particular to a method for producing twisted king blocks and tetrapod hollow blocks of hydraulic concrete by using pipe pile waste slurry. Background technique: [0002] Pipe pile waste slurry is the waste liquid produced during the centrifugal forming process of pipe piles. According to statistics, 1m 3 The pipe pile concrete is centrifuged to produce about 0.05m 3 of waste pulp. Its main components are cement, fine sand, water, a small amount of dust and admixtures. The content of cement in the waste slurry reaches 60%. [0003] The past treatment method for the generated pipe pile surplus slurry (waste slurry) is to directly discharge it on the open space or pour it into a puddle or farmland, and then dig it out for landfill after it is naturally hardened. Because the waste slurry contains a large amount of alkaline substances, it can take up to a hundred yea...

AI Technical Summary

Problems solved by technology

However, the current development and utilization of pipe pile residual slurry is no longer limited to the technical level of recycling for the preparation of concrete

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