Maritime work admixture

A technology of admixtures and marine engineering, applied in the field of marine engineering admixtures, can solve the problems of poor durability, poor construction quality, and harsh construction environment in marine engineering, and achieve the goals of improving work performance, improving anti-corrosion ability, and reducing cement consumption Effect

Pending Publication Date: 2020-01-17
SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The harsh environment of marine construction and the lack of special cement admixtures lead to poor construction quality and lack of Cl in service. - Rapid online detection technology leads to poor durability of marine engineering

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In parts by weight, the specific surface area is 420m 2 / kg S95 grade slag powder 60 parts, fly ash 35 parts, desulfurization gypsum 5 parts.

Embodiment 2

[0033] In parts by weight, the specific surface area is 420m 2 / kg S95 grade slag fine powder 65 parts, fly ash 32 parts, sodium sulfate 3 parts.

Embodiment 3

[0035] In parts by weight, the specific surface area is 420m 2 / kg S95 grade slag powder 70 parts, fly ash 22 parts, desulfurization gypsum 5 parts, sodium sulfate 3 parts.

[0036] Test Data

[0037] The concrete test was carried out with the configured marine admixture. The concrete design was C30 grade, and the mix ratio was selected from the commonly used pumped concrete mix ratio. The water consumption was basically unchanged. The concrete slump was controlled to be 180±30mm by adjusting the amount of admixture. The mix ratio of C30 grade concrete is shown in Table 1, where:

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Abstract

The invention belongs to the technical field of ocean engineering materials, and particularly relates to a maritime work admixture which comprises the following raw materials in parts by weight: 50-90parts of superfine slag powder and 10-50 parts of coal ash or further comprises 1-10 parts of an excitant, and the maritime work admixture is obtained by compounding the raw materials in proportion and then uniformly stirring. By using the marine admixture disclosed by the invention, the density of a concrete material can be improved, a low-permeability, high-density and low-defect concrete structure is formed, the corrosion resistance of the concrete structure in the ocean is fundamentally improved, and the carbonization resistance, permeation resistance and freezing resistance of concrete are improved; solid waste is used as the main raw material, positive significance is achieved for resource regeneration and environmental protection, meanwhile, the raw materials are easy to obtain, the preparation process is simple, and the process is controllable.

Description

technical field [0001] The invention relates to the technical field of marine engineering materials, in particular to a marine admixture. Background technique [0002] Seawater environment has a huge impact on the corrosion resistance and durability of marine engineering facilities. Carrying out land reclamation and basic engineering construction in coastal areas is faced with harsh climate environments such as high temperature, high humidity, high salt spray, deep water and large waves. Very high requirements are placed on the performance of marine engineering building materials. However, ordinary Portland cement has poor corrosion resistance, high heat of hydration, and because the early tensile strength of concrete is very low and the modulus of elasticity is small, it is easy to cause serious temperature cracks in concrete, especially large-volume concrete. Seriously affect the strength and durability of marine engineering structures. [0003] Under the marine environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B22/14C04B24/02C04B24/12C04B28/00C04B18/08C04B18/14C04B111/20C04B111/22C04B111/24
CPCC04B28/00C04B40/0039C04B2111/2015C04B2111/22C04B2111/24C04B2111/29C04B18/141C04B18/08C04B22/145C04B22/147C04B14/02C04B14/06Y02W30/91
Inventor 康明周维曹黎颖
Owner SHANGHAI BAOTIAN NOVEL BUILDING MATERIALS
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