Marine sand processing technique

Abstract

The invention relates to a sea sand disposal process which is characterized in that the sea sand can achieve the requirement of national construction norm by special disposal. The process of the invention comprises the steps as follows: a. the sea sand to be disposed is spread (being freely washed by rainwater); b. the sea sand is delivered into a sand washing pool and dipped and washed; c. the sea sand which is dipped and washed in the sand washing pool is delivered into a sand washing machine and washed. The sea sand which finishes the washing is sampled, so as to detect the content of chloride ions; steps b and c are repeated for the sea sand which does not comply with the specification of the chloride ion content. As the technical proposal of the invention is adopted, the sea sand disposal process has the beneficial effects of reducing the content of the chloride ions in the sea sand so as to comply with the requirement corresponding to national norm sands used for building; (GB / T14684-2001) that the content of chloride ion for second-level sand is not more than 0.02%; furthermore, the cost is effectively saved.

Description

A sea sand treatment process technical field The invention relates to the relevant technical field of building construction, and relates to a method for treating construction sand, in particular to a sea sand treatment process. Background technique Due to geographical limitations, there is no river sand in some areas, so sea sand is used as the sand source for reinforced concrete. However, the chloride ions in the sea sand will chemically react with the steel bars in the reinforced concrete, causing the steel bars to corrode and expand, resulting in cracks in the concrete along the steel bars, greatly reducing the durability of the concrete structure and shortening the design service life of the building. Therefore, according to my country's current national standards, sea sand cannot be directly used for mixing concrete, and it needs to be treated to reduce its chloride ion content to meet the relevant national standards: "Sand for Construction" (GB / T14684-2001) Secondary...

AI Technical Summary

Problems solved by technology

However, the chloride ions in the sea sand will chemically react with the steel bars in the reinforced concrete, causing the steel bars to corrode and expand, resulting in cracks in the concrete along the steel bars, greatly reducing the durability of the concrete structure and shortening the design service life of the building

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