Novel island reef rapid repair concrete

Abstract

The invention discloses novel island reef rapid repair concrete, belongs to the technical field of adding additives into concrete, and is realized on the basis of sulphoaluminate cement with rapid solidification performance and anti-dispersing agent xanthan gum. The concrete is prepared from coral reef sand powder with the particle size of 1-3mm, coral aggregate with the particle size of 10-15mm,a superplasticizer and sulphoaluminate cement. The concrete disclosed by the invention has the characteristic of rapid solidification, has excellent underwater dispersion resistance, and is low in relative cost which cannot be achieved by other underwater concrete in island construction.

Description

technical field [0001] The invention relates to a novel rapid repair concrete for islands and reefs, which belongs to the field of concrete. Background technique [0002] The concrete that is mixed on the ground but directly poured underwater and solidified underwater is called underwater concrete. All concrete can generally be solidified underwater, but due to the macroscopic movement of water and the diffusion of molecules underwater, the concrete mortar tends to spread in the water, so the quality is generally poor. In many cases of underwater construction, cement with fast setting speed and high strength is required to meet the needs of construction. Therefore, there is a need for a concrete that has the characteristics of non-separation, self-compacting, low bleeding and fast setting speed under water. [0003] With the continuous development of island and reef buildings in various countries in the world, there are more and more buildings on the islands and reefs. Sin...

AI Technical Summary

Problems solved by technology

[0004] CN110372298A patent describes a preparation method of high-strength coral concrete, using cement, mineral admixture, coral aggregate, water, water reducing agent, etc. to mix and prepare high-strength coral aggregate concrete, which has good strength and durability. But it can't achieve the effect of rapid solidification under water and good strength after solidification

Cannot be used for emergency repairs on islands and reefs

[0005] CN106495594A patent describes a reinforced concrete material suitable for oceanic coral islands and reefs. It is a reinforced concrete component made of rust inhibitors, coral aggregates, and 2205 two-way stainless steel as component materials. It has good environmental protection benefits and durability. However, its concrete cannot achieve the effect of rapid solidification underwater and good strength after solidification, so it cannot be used for emergency repairs on islands and reefs