High-strength cementing agent suitable for marine sludge and preparation method of high-strength cementing agent

Abstract

The invention relates to a high-strength cementing agent suitable for marine sludge and a preparation method thereof, the cementing agent is composed of a curing agent and an exciting agent, the curing agent comprises clinker, blast furnace slag powder, fly ash and gypsum, and based on the mass of the clinker, the addition amount of the other raw materials is as follows: 10-40% of blast furnace slag powder, 5-35% of fly ash and 4-16% of gypsum; and the adding amount of the exciting agent is 0.5-4.5% of the mass of the curing agent, the main material of the exciting agent is calcium silicate, and the content of the calcium silicate is greater than or equal to 98%. The preparation method comprises the following steps: mixing the clinker, blast furnace slag powder, fly ash and gypsum in proportion to obtain a curing agent mixture, and grinding the curing agent mixture through a ball mill to obtain curing agent powder; and adding the exciting agent into the curing agent powder, and uniformly stirring to obtain the cementing agent. The strength of the solidified sludge can be enhanced, high freezing resistance and softening resistance are achieved, the preparation method is easy and convenient to operate, and production is easy.

Description

technical field [0001] The invention belongs to the technical field of dredging product recycling, and in particular relates to a high-strength cement suitable for marine silt and a preparation method thereof. Background technique [0002] In recent years, with the continuous advancement of urbanization, the expansion of human activity space has become a hot spot in the engineering and technology circles. During the development and construction of a large number of rivers, rivers, lakes, seas and other spaces, a large amount of dredging silt is usually produced. According to incomplete statistics, the discarded dredged silt in our country can reach more than 100 million cubic meters every year. These dredged silts have the characteristics of high compressibility, low strength, poor mechanical properties, and some contain pollutants. Traditional treatment methods such as stacking and throwing out take up too much space, take a long time to process, are expensive, and cause g...

AI Technical Summary

Problems solved by technology

[0003] As the most commonly used cementing agent in the market, cement has problems such as relatively low strength, weak dispersion resistance and frost resistance when solidifying marine silt, which makes the cost of solidifying marine silt relatively high

Images