Silicon-aluminum base marine concrete material and preparing method thereof

A marine concrete and silica-alumina-based technology, applied in cement production, etc., can solve problems such as inconvenient transportation, large resource consumption, energy, pollution, etc., achieve durability and seawater erosion resistance, reduce construction costs, and reduce production cost effect

Inactive Publication Date: 2017-02-22
ARCHITECTURAL DESIGN & RES INST OF TSINGHUA UNIV +1
5 Cites 9 Cited by

AI-Extracted Technical Summary

Problems solved by technology

It does not fundamentally solve the defect of poor corrosion resistance of Portland cement concrete
Moreover, most marine concrete projects are remote and inconvenient to transport, and it is difficult to obtain high-quality active mixture during construction.
In addition, the diversity of concrete raw materials and multiple components in the proportion have brought difficulties to the procurement of raw materials, quality control, actual preparation and construction of high-performance marine concrete, and the production of o...
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Abstract

Disclosed are a silicon-aluminum base marine concrete material and a preparing method thereof. The preparing method comprises the steps of weighing mineral admixtures, portland cement clinker and diagenetic agent and conducting mixing and grinding on the mineral admixtures, portland cement clinker and diagenetic agent, wherein weight ratio of the mineral admixtures to the portland cement clinker to the diagenetic agent is (60-95):(0:30):(1-10), and preparing the mixture into a silicon-aluminum base binding material for use; weighing the prepared binding material, aggregate and admixture for use, wherein the weight ratio of the binding material to the aggregate to the admixture is 1:(4-7):(0.01-0.10); mixing the obtained mixture with water and stirring evenly the mixture; casting silicon-aluminum base marine concrete slurry prepared after the mixture is stirred into a mould to be subjected to maintenance, and finally obtaining the silicon-aluminum base marine concrete material. The prepared silicon-aluminum base marine concrete material has high durability and sea water corrosion resistance, and has a long service life and a low cost.

Application Domain

Technology Topic

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  • Silicon-aluminum base marine concrete material and preparing method thereof
  • Silicon-aluminum base marine concrete material and preparing method thereof
  • Silicon-aluminum base marine concrete material and preparing method thereof

Examples

  • Experimental program(4)

Example Embodiment

[0033] Example 1
[0034] A method for preparing silicon-aluminum-based marine concrete material includes the following steps:
[0035] (1) Mix the slag, fly ash, red mud, Portland cement clinker, silica fume, calcium sulfate and sodium formate according to the weight ratio in Table 1 below, and add the materials in the ratio to the ball mill for mixing Grind for 30 minutes to prepare CaO/(SiO 2 +Al 2 O 3 )=0.96, the specific surface area is 502cm 2 /kg.
[0036] Table 1
[0037]
[0038] The physical properties of the silica-aluminum-based cementitious materials prepared in Table 1 above are shown in Table 2 below:
[0039] Table 2
[0040]
[0041] (2) The silica-alumina-based cementing material prepared in the above step (1), river sand, stone, and polycarboxylic acid early-strength water reducing agent are weighed at a weight ratio of 1:2:4:0.015 for use.
[0042] (3) Measure the amount of water according to the water-cement ratio (that is, the ratio of water to the material obtained in step (2)) of 0.49, add water to the mixer, and then add the materials prepared in step (2) to the mixer in turn, and add while stirring .
[0043] (4) Stir for 5 minutes to make a silica-alumina-based marine concrete slurry, pour the slurry into a mold for curing, the curing temperature is 20-40℃, the preferred curing temperature is 20±2℃, and the relative humidity is above 80% , Made the present invention silicon-aluminum-based marine concrete material.
[0044] The silicon-aluminum-based marine concrete material produced in the above-mentioned embodiment was cut into regular shapes and tested for performance. The test results are shown in Table 3.
[0045] table 3
[0046]

Example Embodiment

[0047] Example 2
[0048] A method for preparing silicon-aluminum-based marine concrete material includes the following steps:
[0049] (1) Mix slag, pozzolan, steel slag, Portland cement clinker, fluorspar, calcium sulfate and calcium carbonate according to the weight ratio in Table 4 below, and add the materials in the ratio to the ball mill for mixing and grinding 30 Minutes to prepare CaO/(SiO 2 +Al 2 O 3 )=1.03, the specific surface area is 486cm 2 /kg.
[0050] Table 4
[0051]
[0052] The physical properties of the silica-alumina-based cementitious materials prepared in Table 4 above are shown in Table 5 below:
[0053] table 5
[0054]
[0055] (2) The silica-alumina-based cementing material prepared in the above step (1), sea sand, stone, and polycarboxylic acid early-strength water reducing agent are weighed according to the weight ratio of 1:1.5:4:0.015 for use.
[0056] (3) Measure the amount of water according to the water-cement ratio (that is, the ratio of water to the material obtained in step (2)) of 0.48, add water to the mixer, and then add the materials prepared in step (2) to the mixer one by one, and add the materials while stirring .
[0057] (4) Stir for 5 minutes to make a silica-alumina-based marine concrete slurry, and pour the slurry into a mold for curing. The curing temperature is 20-40℃, preferably the curing temperature is 20℃±5℃, and the relative humidity is 80%. Above, the silicon-aluminum-based marine concrete material of the present invention is made.
[0058] The silicon-aluminum-based marine concrete material made in the above-mentioned embodiment was cut into regular shapes and tested for performance. The test results are shown in Table 6.
[0059] Table 6
[0060] Serial number project unit Performance 1 Compressive strength Mpa 58.1 2 Flexural strength Mpa 7.1 3 Impermeability level S39 4 Antifreeze label D300 5 60d seawater corrosion resistance coefficient % 99.04

Example Embodiment

[0061] Example 3
[0062] A method for preparing silicon-aluminum-based marine concrete material includes the following steps:
[0063] (1) Mix slag, fly ash, pozzolan, silica fume, calcium sulfate, and sodium silicate according to the weight ratio in Table 7 below. Add the materials in the ratio to a ball mill for mixing and grinding for 30 minutes to prepare silicon Aluminum-based cementitious material CaO/(SiO 2 +Al 2 O 3 )=0.78, the specific surface area is 466cm 2 /kg.
[0064] Table 7
[0065]
[0066] (2) The silica-alumina-based cementing material prepared in the above step (1), coral sand, stones, and active agent are weighed at a weight ratio of 1:2:2:0.03 for use.
[0067] (3) Measure the amount of water according to the water-cement ratio (that is, the ratio of water to the material obtained in step (2)) of 0.58, add water to the mixer, and then add the materials prepared in step (2) to the mixer one by one, and add the materials while stirring .
[0068] (4) Stir for 3 minutes to make a silica-alumina-based marine concrete slurry, pour the slurry into a mold for curing, the curing temperature is 20-40℃, the preferred curing temperature is 30±2℃, and the relative humidity is above 80% , Made into the silicon-aluminum-based marine concrete material of the present invention.
[0069] The silicon-aluminum-based marine concrete material made in the above-mentioned embodiments was cut into regular shapes, and performance tests were performed. The test results are shown in Table 8.
[0070] Table 8
[0071] Serial number project unit Performance 1 Compressive strength Mpa 60.3 2 Flexural strength Mpa 7.1 3 Impermeability level S39 4 Antifreeze label D300 5 60d seawater corrosion resistance coefficient % 118.49
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PUM

PropertyMeasurementUnit
Compressive strength58.12mPa
Flexural strength7.13mPa
Permeability39.0S
tensileMPa
Particle sizePa
strength10

Description & Claims & Application Information

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