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Maritime work mortar prepared by using artificial aggregate

An artificial aggregate and mortar technology, applied in the field of building materials, can solve the problems of transportation, loading and unloading, storage, and mechanical construction inconvenience, raw material loading, unloading and storage, and high transportation costs, so as to reduce construction costs, The effect of high early strength and simple construction process

Inactive Publication Date: 2014-06-11
INST OF GENERAL LOGISTICS DEPT CONSTR PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Marine engineering construction, especially in engineering construction on islands and sea reefs far away from the coastline of the mainland, if traditional concrete materials on the market are still used, such as: cement, river sand, stones and fresh water to mix concrete, then these The transportation, loading and unloading, storage, and mechanical construction of concrete raw materials will bring a lot of inconvenience
Not only is the transportation cost too high, but at the same time, under the conditions of the ocean environment far away from the coastline of the mainland, especially in the engineering construction of islands and reefs lacking sand and gravel, it is almost difficult to implement such tasks as loading, unloading and storage of raw materials.

Method used

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  • Maritime work mortar prepared by using artificial aggregate
  • Maritime work mortar prepared by using artificial aggregate
  • Maritime work mortar prepared by using artificial aggregate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Marine mortar prepared with ordinary Portland cement:

[0028] Table 1:

[0029]

[0030] Marine mortar prepared with ordinary Portland cement:

[0031] 42.5 Ordinary Portland Cement 44.9%, 82.5 High Strength Sulphoaluminate Cement 1.80%, Mortar Modifier 1.32%, Silica Fume 0.60%, Fly Ash 18.0%, Fiber 0.12%, Seawater 18.26%, Artificial Aggregate 15.0 %. After accurately weighing the raw materials according to the proportion, stir with a mortar mixer, add sea water while stirring, after stirring for 5-10 minutes, add artificial aggregate, continue stirring for 1-2 minutes, pour the stirred mortar into a 4cmx4cmx16cm mold, Place it on a vibrating table and vibrate for 24 hours, then measure the compressive strength of the mortar for 1 day after removing the formwork, and put the other test blocks in seawater at room temperature for curing until the test age.

[0032] After testing, the 1-day compressive strength of the mortar was 12.8MPa, and the 7-day compressive st...

Embodiment 2

[0034] Marine mortar prepared with ordinary Portland cement:

[0035] 42.5 Ordinary Portland Cement 50.8%, 82.5 High Strength Sulphoaluminate Cement 1.80%, Mortar Modifier 1.31%, Silica Fume 0.60%, Fly Ash 17.9%, Fiber 0.12%, Seawater 21.47%, Artificial Aggregate 6.00 %. After accurately weighing the raw materials according to the proportion, stir with a mortar mixer, add sea water while stirring, after stirring for 5-10 minutes, add artificial aggregate, continue stirring for 1-2 minutes, pour the stirred mortar into a 4cmx4cmx16cm mold, Place it on a vibrating table and vibrate for 24 hours, then measure the compressive strength of the mortar for 1 day after removing the formwork, and put the other test blocks in seawater at room temperature for curing until the test age.

[0036] After testing, the 1-day compressive strength of the mortar was 20.7MPa, and the 7-day compressive strength was 32.8MPa.

Embodiment 3

[0038] Marine mortar made with slag cement

[0039] Table 2

[0040]

[0041] Marine mortar formulated with slag cement:

[0042] 42.5 slag cement 54.3%, 42.5 early strength sulfoaluminate cement 7.80%, mortar modifier 1.97%, silica fume 0.76%, fly ash 7.76%, fiber 0.16%, seawater 15.65%, artificial aggregate 11.6%. After accurately weighing the raw materials according to the proportion, stir with a mortar mixer, add sea water while stirring, after stirring for 5-10 minutes, add artificial aggregate, continue stirring for 1-2 minutes, pour the stirred mortar into a 4cmx4cmx16cm mold, Place it on a vibrating table and vibrate for 24 hours, then measure the compressive strength of the mortar for 1 day after removing the formwork, and put the other test blocks in seawater at room temperature for curing until the test age.

[0043] After testing, the 1-day compressive strength of the mortar was 14.9MPa, and the 7-day compressive strength was 29.7MPa.

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Abstract

The invention belongs to the technical field of building materials, in particular relates to a maritime work mortar which is prepared by proportionally mixing cement, sulphoaluminate cement, a mortar modifier, silica fume, fly ash, polypropylene fiber, an artificial aggregate and sea water. The cement is one from silicate, ore slag or pozzolan cement, the sulphoaluminate cement is one from early-strength or high strength type cement, the mortar modifier is compounded by one or more substance from acrylic acid, naphthaline salt, polycarboxylate and melamine polymer, and the artificial aggregate is a polymeric resin ball formed by expansion after water absorption. The maritime work mortar is prepared by mixing water-absorbent resin as the artificial aggregate and modified cement as a modified cement with the sea water, the one-day compressive strength of the maritime work mortar is 5-20MPa, and the seven-day compressive strength is about 20 to 35MPa. The maritime work mortar is especially suitable for use in island and reef engineering construction lack of construction sand and fresh water and away from mainland coastlines. The maritime work mortar has the advantages of simple preparation and wide application.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a marine mortar. Background technique: [0002] Marine engineering construction, especially in engineering construction on islands and sea reefs far away from the coastline of the mainland, if traditional concrete materials on the market are still used, such as: cement, river sand, stones and fresh water to mix concrete, then these The transportation, loading and unloading, storage, and mechanical construction of concrete raw materials will bring a lot of inconvenience. Not only is the transportation cost too high, but at the same time, in the marine environment far from the coastline of the mainland, especially in the engineering construction of islands and reefs lacking sand and gravel, it is almost difficult to put into practice work such as loading, unloading and storage of raw materials. Therefore, it is of great strategic significance to develop a ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/06C04B16/04C04B18/08
CPCY02W30/91
Inventor 程志军程华侯忠明潘晓春刘剑飞赵晓文
Owner INST OF GENERAL LOGISTICS DEPT CONSTR PLA
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