Production method and product of multifunctional lightweight sludge concrete

A lightweight sludge and production method technology, applied in the field of concrete products, can solve the problems of polluting groundwater, polluting air, and huge treatment sites, etc., and achieve good lightness and compression resistance, good compression resistance, and pressure reduction Effect

Inactive Publication Date: 2016-05-04
TIANJIN YUJIE HONGYE CONCRETE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such a treatment method has the following disadvantages and difficulties: because the sludge is in the form of paste, the moisture content of the original sludge is as high as 95%, and it must be dehydrated and dried many times, requiring expensive dehydration and drying equipment and huge energy consumption, and A huge treatment site is required; incineration of sludge will seriously pollute the air; because the sludge contains a variety of h

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Mix the sludge and quicklime powder according to the weight ratio of 2:1, and stir well to make the calcium oxide in the quicklime and the water in the sludge react chemically to form sludge hydrated lime; mix the sludge hydrated lime and cement according to the weight ratio of 3:2 Proportional mixing, adding an appropriate amount of water, and fully stirring, you can get lightweight sludge concrete.

Embodiment 2

[0025] Mix the sludge and quicklime powder according to the weight ratio of 3:1, and stir well to make the calcium oxide in the quicklime and the water in the sludge react chemically to form sludge hydrated lime; mix the sludge hydrated lime and cement according to the weight ratio of 1:1 Proportional mixing, adding an appropriate amount of water, and at the same time adding an appropriate amount of fly ash and anti-seepage agent, and fully stirring, you can get lightweight sludge concrete containing fly ash and anti-seepage agent.

Embodiment 3

[0027] The lightweight sludge concrete obtained in Example 1 or Implementation 2 is filled in the space around the inspection well, and after the lightweight sludge concrete is solidified, a light-weight filling body with a certain compressive strength is formed. The filling body has a certain compressive strength, which can meet the requirements for compressive strength around the inspection well. At the same time, because the filling body has low density, it can reduce the pressure on the surrounding soil layer and avoid the occurrence of subsidence.

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PUM

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Abstract

The invention belongs to the technical field of concrete products and particularly relates to a production method and a product of multifunctional lightweight sludge concrete. According to the method, sludge produced through sewage treatment reacts with quicklime firstly, and sludge slaked lime is formed; the sludge slaked lime is then mixed with cement and water, and the lightweight sludge concrete is formed. The production method cannot cause environmental pollution, is low in cost and can solve the problem about sludge treatment in the sewage treatment industry, the lightweight concrete with multiple purposes can be produced through recovery and utilization of the sludge, and the sludge concrete produced with the production method has the performance of light weight, pressure resistance and the like and can be taken as a building filling material.

Description

technical field [0001] The patent of the invention belongs to the technical field of concrete products, and in particular relates to a production method and product of multifunctional lightweight sludge concrete. Background technique [0002] Sewage treatment is the process of concentrating the impurities in sewage into semi-solid form and then separating them from the fluid. The separated paste concentrate is sludge. Sludge treatment has always been a difficult problem in the sewage treatment industry. Sludge treatment equipment accounts for about 40%-60% of the infrastructure investment of sewage treatment plants, and about 50% of the cost of sewage treatment plants is sludge treatment costs. [0003] The traditional production method of multifunctional lightweight sludge concrete is to firstly dehydrate and dry the sludge, and then incinerate or landfill it. Such a treatment method has the following disadvantages and difficulties: because the sludge is in the form of pas...

Claims

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Application Information

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IPC IPC(8): C04B28/12
CPCC04B28/12C04B2111/40C04B18/0418C04B7/00
Inventor 臧金晨
Owner TIANJIN YUJIE HONGYE CONCRETE CO LTD
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