Technological process for producing pipe pile by using fine-ground metallurgical slag and fine-ground high silicon sand multiple infiltration method

Abstract

The present invention is aimed at providing a technological process for producing pipe pile by adopting fine-ground metallurgical slag and fine-ground high-silicon sand reblending method. When said invented technique is used to produce pipe pile, the fine-ground metallurgical slag and fine-ground high-silicon sand can be mixed according to a certain proportion, and said mixture can be substitutedfor 30%-60% of high-grade Portland cement or general Portlant cement with above 42.5-level to produce pipe ile. Said method not only can utilize furnace slag, but also reduce addition quantity of cement, and raise early-strength and after-strength of pipe pile concrete.

Description

technical field [0001] The invention relates to a technical method for producing concrete products. Background technique [0002] In the prior art, the cementitious material used in the production of pre-tensioned prestressed concrete pipe piles (referred to as pipe piles) is high-grade Portland cement or ordinary Portland cement of grade 42.5 or above. Process for the production of pre-tensioned prestressed high-strength concrete pipe piles by grinding fine construction sand" method. Pre-tensioned prestressed concrete pipe piles include prestressed concrete pipe piles (ie PC piles, the concrete design strength is C60 grade), prestressed high-strength concrete pipe piles (ie PHC piles, concrete design strength is C80 grade), prestressed concrete Thin-walled pipe piles (ie PTC piles, with a concrete design strength of C60). The finely ground steel slag and the finely ground slag are collectively referred to as the finely ground metallurgical slag. Ground steel slag, ground...

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Problems solved by technology

Ground steel slag, ground slag, etc. have been used as admixtures for pipe pile concrete alone or as admixtures for cement production. It has also been used to produce pretensioned high-strength concrete pipe piles by mixing finely ground high-silica sand, but the finely ground Metallurgical slag mixed with finely ground high-silica sand and replace cement in a certain proportion to produce pipe piles has not been reported