A kind of inorganic polymer sludge solidification mortar and preparation method thereof

Abstract

The invention discloses an inorganic-polymer mud solidification mortar and a preparation method thereof. The preparation method comprises the following steps: subjecting heavy metal-containing mud produced in offshore engineering to physical-chemical treatment so as to obtain mud particles; then dissolving fly ash in a solution of soluble glass exciting agent, adding the treated mud and stone flour and carrying out mixing under stirring; and adding solid calcium oxide and carrying out stirring. The preparation method provided by the invention overcomes the disadvantage that a great amount of cement is needed in preparation of traditional cement mud solidification materials, reduces influence of production of greenhouse gases like CO2 and discharge of industrial dust in cement production to environment, makes full use of industrial waste like fly ash and waste stone flour for preparation of the mud solidification mortar and enables the industrial waste to be fully recycled and reused; through addition of solid calcium oxide, unwanted free water in the mixture is absorbed and the hydration reaction of an inorganic polymer is accelerated; and the inorganic-polymer mud solidification mortar has excellent early-stage mechanical properties.

Description

technical field [0001] The invention relates to an inorganic polymer sludge solidified mortar and a preparation method thereof, in particular to a method for preparing inorganic polymer sludge solidified mortar with good early performance by using fly ash, stone powder and solid calcium oxide. Background technique [0002] In recent decades, with the implementation of my country's "Belt and Road" project and the "Maritime Silk Road", the rapid development of my country's ports, waterways, offshore and marine engineering construction, the amount of silt cleaned up by various projects continues to increase every year , the amount of marine silt in 2000 alone reached 9518m 3 , After 2010, the amount of silt produced every year is still increasing exponentially. The traditional sludge treatment method is dumping, which takes up a lot of valuable cultivated land resources in our country and has high processing costs. More importantly, the silt produced in these marine projects c...

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Problems solved by technology

[0005] Purpose: In order to overcome the deficiencies existing in the prior art, the present invention provides an inorganic polymer sludge solidification mortar for the traditional inorganic polymer sludge solidification mortar that requires a large amount of cement, long setting time, low early strength, and high temperature maintenance. The mortar and its preparation method completely use fly ash as the cementitious material, and the prepared inorganic polymer sludge solidified mortar has good early performance

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