Sludge powder nano soft soil modifier and preparation method thereof

Abstract

The invention belongs to the field of sludge treatment and in particular relates to a sludge powder nano soft soil modifier and a preparation method thereof. The sludge powder nano soft soil modifier is prepared from the following raw materials in parts by weight: 1.8-2.0 parts of P.O 42.5R ordinary Portland cement, 2.1-2.3 parts of S95 granulated blast-furnace slag, 1.8-2.0 parts of CL90 quick lime, 0.5-0.6 part of F.II level pulverized fuel ash, 0.5-0.6 part of nano-scale silica powder, 0.5-0.6 part of a composite activator, 0.4-0.5 part of sepiolite fibers, 0.6-0.8 part of alkali-resistant glass fibers, 0.8-1.0 part of datolite fibers and 0.8-1.2 parts of paper-making white mud. The paper-making white mud, the sepiolite fibers, the alkali-resistant glass fibers, the datolite fibers, the S95 granulated blast-furnace slag, the P.O 42.5R ordinary Portland cement and the composite activator are mixed, so that flocculated solid gel and lots of fibriform hydration products are produced, the solidified body formed with sludge has stable performance, the compressive strength is high, and the shear force is high.

Description

technical field [0001] The invention belongs to the field of sludge treatment, and in particular relates to a sludge powder nanometer soft soil modifier and a preparation method thereof. Background technique [0002] With the rapid increase of urban population and the rapid development of society and economy, a large amount of untreated production wastewater and domestic sewage are discharged into the inner lake. Over the years, a thick layer of sediment is deposited on the riverbed and the bottom of the lake. This has led to serious pollution from both inside and outside the city, increasing eutrophication of water bodies, and declining water quality, which has greatly affected the ecological environment of the city and the living environment of residents. Contradictions such as river siltation and environmental problems have become increasingly prominent. How to dispose of river silt, find the most feasible and effective solution, realize the comprehensive utilization o...

AI Technical Summary

Problems solved by technology

However, whether it is the traditional sludge solidification material cement, lime or the new sludge solidification material-silt solidification agent using various industrial solid wastes, there are still some disadvantages in the reinforcement of sludge, such as low tensile strength, slow strength growth, Defects such as poor toughness

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