In-situ preparation method of cementing material for offshore area infrastructure

A cementitious material and basic technology, which is applied in the field of building materials to achieve the effects of high efficiency, lower transportation costs, and lower chloride ion content

Active Publication Date: 2021-03-02
HUBEI UNIV OF TECH
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Problems solved by technology

This development is beneficial to the engineering application of coral sa

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  • In-situ preparation method of cementing material for offshore area infrastructure

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Embodiment 1

[0032] A cementitious material for infrastructure construction in remote sea areas, which is prepared from coral sand, Portland cement (P·I 52.5), seawater, sea sand, and polycarboxylate high-performance water reducer according to the mass ratio. The preparation method includes the following steps step:

[0033] 1) Select sea sand raw materials that are continuously graded and contain seawater, wash and air-dry the sea sand raw materials to obtain air-dried sea sand raw materials;

[0034] 2) crushing coral bone raw materials of different sizes to obtain coral sand aggregates; then sending the coral sand aggregates into a horizontal ball mill for grinding to obtain coral sand powder;

[0035] 3) Send the coral sand aggregate and air-dried sea sand raw materials into a horizontal ball mill for grinding to obtain nano-micron calcium-silica powder; then mix the nano-micron calcium-silica powder with seawater to obtain nano-micron calcium Silica powder slurry, the dosage is 5%; ...

Embodiment 2

[0039] A cementitious material for infrastructure construction in remote sea areas, which is prepared from coral sand, Portland cement (P·I 52.5), seawater, sea sand, and polycarboxylate high-performance water reducer according to the mass ratio. The preparation method includes the following steps step:

[0040] 1) Select sea sand raw materials that are continuously graded and contain seawater, wash and air-dry the sea sand raw materials to obtain air-dried sea sand raw materials;

[0041] 2) crushing coral bone raw materials of different sizes to obtain coral sand aggregates; then sending the coral sand aggregates into a horizontal ball mill for grinding to obtain coral sand powder;

[0042]3) Send the coral sand aggregate and air-dried sea sand raw materials into a horizontal ball mill for grinding to obtain nano-micron calcium-siliceous powder; then mix the nano-micron-scale calcium-silica powder with seawater to obtain nano-micron calcium Silica powder slurry, the dosage ...

Embodiment 3

[0046] A cementitious material for infrastructure construction in remote sea areas, which is prepared from coral sand, Portland cement (P·I 52.5), seawater, sea sand, and polycarboxylate high-performance water reducer according to the mass ratio. The preparation method includes the following steps step:

[0047] 1) Select sea sand raw materials that are continuously graded and contain seawater, wash and air-dry the sea sand raw materials to obtain air-dried sea sand raw materials;

[0048] 2) crushing coral bone raw materials of different sizes to obtain coral sand aggregates; then sending the coral sand aggregates into a horizontal ball mill for grinding to obtain coral sand powder;

[0049] 3) Send the coral sand aggregate and air-dried sea sand raw materials into a horizontal ball mill for grinding to obtain nano-micron calcium-siliceous powder; then mix the nano-micron-scale calcium-silica powder with seawater to obtain nano-micron calcium Silica powder slurry, the dosage...

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Abstract

The invention provides an in-situ preparation method of a cementing material for offshore area infrastructure. Coral sand, sea sand and other marine area resources are used as main raw materials to prepare the cementing material for offshore area infrastructure in situ. A movable wet mill is adopted to carry out ultrafine treatment on raw materials, coral sand and sea sand are used as the raw materials to prepare a nano-micron ultrafine admixture, and a nano-grade coral mortar material is used as an early strength agent to promote concrete to form tightest accumulation and improve the compactness of the concrete. According to the invention, the transportation volume of the cementing material for concrete infrastructure construction in the offshore area is reduced, and the problems of hightransportation cost, long construction period and large carbon emission of the cementing material are solved. A new thought is provided for the preparation method and the application of the cementingmaterial for the infrastructure in the offshore area.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an on-site preparation method of gelling materials for infrastructure construction in remote sea areas. Background technique [0002] In the prior art, raw materials for preparing cementitious materials for infrastructure construction in remote sea areas are usually Portland cement (P·I52.5), coral sand, sea sand, polycarboxylate high-performance water reducer, etc., and the production cost is lower than that of ordinary concrete. not big. In most projects, traditional concrete can meet the requirements, but the environment in the offshore area is complex, raw materials are inconvenient to obtain, and the transportation cost is high. The method of preparing offshore cementitious materials on site can reduce the construction cost to a certain extent, and shorten the construction time by using local materials. Construction period. In the present invention, ...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B20/02C04B14/28C04B14/06
CPCC04B28/04C04B20/026C04B20/02C04B14/068C04B14/28C04B2201/50C04B2103/302C04B22/0026
Inventor 杨进白行贺行洋苏英胡华超张强王铁唐袁珍于肖雷王福龙杨明鉴李颜娟
Owner HUBEI UNIV OF TECH
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