Silt solidification method

Abstract

The invention discloses a silt solidification method, which comprises the following steps: weighting raw materials in parts by weight: 100 parts of marine silt, 5-20 parts of caustic dross, 0-5 parts of mineral powder, 5-30 parts of a solidifying agent, wherein the solidifying agent comprises the following raw materials in parts by weight: 10-50 parts of fly ash, 20-80 parts of mineral waste residues and 2-10 parts of a catalyst, the catalyst is selected from a naphthalene-based superplasticizer, an early-strength slushing agent and an antifreezing agent and the like, and the marine silt is obtained by capturing and stockpiling; adding the raw materials into a mixer in part by weight to mix uniformly, thereby obtaining a mixture; and carrying out transportation, compaction, maintenance and detection on the mixture. The method disclosed by the invention can be applied to the filed stirring and solidification of dredger fills, cement injection piles and the like of roadbases, cement stabilization layers, soft-soil foundation reinforced working underlayers and loading layers in municipal, transportation, water conservancy and port engineering. The method disclosed by the invention can save the construction period and save the cost, is rapid in solidification effect and good in effect, and can achieve an effect of environmental protection and economy and reaches the sustainable development of renewable energy sources.

Description

technical field [0001] The invention relates to a mud solidification method, which belongs to the technical field of marine engineering and can be used in engineering constructions such as soft soil reinforcement of port engineering and municipal engineering. Background technique [0002] When engineering construction is carried out on soft silt foundations, especially dredging silt soft foundations, a large amount of mountain soil, cement or sand and gravel resources are needed. With the strengthening of environmental protection, natural resources are becoming increasingly tense, and the supply of mountain soil and sand and gravel materials is in short supply. Especially cement production requires a lot of energy and causes certain environmental pollution. There is a technical bottleneck in using cement to reinforce silt or dredging silt. [0003] The treatment and utilization of sludge is one of the main factors affecting the quality, construction period and cost of port...

AI Technical Summary

Problems solved by technology

[0005] With the rapid development of the national economy, industries and factories have risen rapidly, but due to the imperfect industrial chain, various industrial wastes cannot be fully utilized, such as alkali slag

A large amount of alkali slag is produced during the production process of the alkali plant, which piles up like a mountain, occupies a large amount of farmland and sea area, and causes huge pollution to the environment. The reuse of alkali slag has become a difficult problem in the world

Thermal power plants and steel mills produce a large amount of fly ash and slag. In recent years, my country has made great progress in the utilization of slag and fly ash, but they are only used as auxiliary materials for building materials, and their chemical properties have not been fully utilized.