CN107602036A - A kind of early-strength cement composition - Google Patents
A kind of early-strength cement composition Download PDFInfo
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- CN107602036A CN107602036A CN201710925663.8A CN201710925663A CN107602036A CN 107602036 A CN107602036 A CN 107602036A CN 201710925663 A CN201710925663 A CN 201710925663A CN 107602036 A CN107602036 A CN 107602036A
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Abstract
The present invention proposes a kind of early-strength cement composition, and its composition is counted as follows in parts by weight：15 28 parts of 50 80 parts of quick lime, 5 15 parts of calcium hydroxide, 36 parts of early strength agent, 18 parts of retarder, 10 16 parts of di-iron trioxide, 38 parts of calcium silicates and magnesia, reduce cost, more green.
Description
Technical field
The present invention relates to a kind of early-strength cement composition.
Background technology
Roman uses the extravaganza of great buildings of " Roman cement " construction and water channel still to be stood erect after 2000.Roman cement leads to
Mixing volcanic ash (such as volcano ashes or ground brick) is crossed to form lime-pozzolan cement with lime and water and formed.Sieve
The hydrated product of horse cement and modern Portland cement are essentially identical, but its formation will be more slowly so that Roman cement conduct
Modern cementing material is unpractical.In modern concrete, volcanic ash such as flying dust and volcano ashes are commonly used to replace part
Portland cement.Part Portland cement is replaced to produce with more high-durability, more subchloride permeability, creep with volcanic ash
Reduce, the improved concrete that resistance to chemical attack is improved, cost reduces and environment influence is reduced.Volcanic ash and Portland water
The excess calcium hydroxide reaction discharged during muddy water, so as to help to prevent to be carbonized.However, because volcanic ash generally delays
Strength development, limited so can replace existing by volcanic ash for how many Portland cement.Although increase when manufacturing concrete
Volcano ash content and reduction Portland cement content have potential economy and environmental benefit, but technology restriction makes its practical application
It is confined to present level.It is estimated that in the U.S., in all ready-mixed concrete using volcanic ash really, 40% is only less than
Ready-mixed concrete use volcanic ash, typical replacement level is about 10%-15%.Accounted for although the superior concrete of design can contain
The volcanic ash of the higher percentage of whole adhesives, but design the defects of concrete is to overcome blended cement and make it that cost is high, lead to
Often it is only applicable to beneficial property high price construction project more prior than the engineering cost such as skyscraper of wherein volcanic ash and large-scale
In government utility building.In most cases, the trend that volcanic ash delays concrete strength to develop, which produces, substitutes the upper limit, is higher than
The advantage of Portland cement will be substituted during this upper limit to disappear.In short, when the cost and easiness of major concern manufacture, such as
In the case of general concrete, volcanic ash is generally used with low amounts or not used.
The content of the invention
The present invention proposes a kind of early-strength cement composition regarding to the issue above, reduces cost, more green.
Specific technical scheme is as follows：
A kind of early-strength cement composition, its composition are counted as follows in parts by weight：
Quick lime 50-80 parts, calcium hydroxide 5-15 parts, early strength agent 3-6 parts, retarder 1-8 parts, di-iron trioxide 10-16 parts, silicon
Sour calcium 3-8 parts and magnesia 15-28 parts.
Further, the retarder is sodium citrate.
Further, the early strength agent is triethanolamine.
Further, the composition of cement composition is counted as follows in parts by weight：
65 parts of quick lime, 10 parts of calcium hydroxide, 5 parts of early strength agent, 4 parts of retarder, 13 parts of di-iron trioxide, 4 parts of calcium silicates and oxygen
Change 20 parts of magnesium.
Beneficial effects of the present invention are：The present invention significantly reduces production cost.
Embodiment
To make technical scheme become apparent from clearly, below the present invention is described further, it is any to this
The scheme that the technical characteristic progress equivalencing of inventive technique scheme and conventional reasoning are drawn each falls within the scope of the present invention.
Embodiment one
A kind of early-strength cement composition, its composition are counted as follows in parts by weight：
65 parts of quick lime, 10 parts of calcium hydroxide, 5 parts of early strength agent, 4 parts of retarder, 13 parts of di-iron trioxide, 4 parts of calcium silicates and oxygen
Change 20 parts of magnesium.
Further, the retarder is sodium citrate.
Further, the early strength agent is triethanolamine.
Embodiment two
A kind of early-strength cement composition, its composition are counted as follows in parts by weight：
50 parts of quick lime, 5 parts of calcium hydroxide, 3 parts of early strength agent, 1 part of retarder, 10 parts of di-iron trioxide, 3 parts of calcium silicates and oxidation
15 parts of magnesium.
Further, the retarder is sodium citrate.
Further, the early strength agent is triethanolamine.
Embodiment three
A kind of early-strength cement composition, its composition are counted as follows in parts by weight：
80 parts of quick lime, 15 parts of calcium hydroxide, 6 parts of early strength agent, 8 parts of retarder, 16 parts of di-iron trioxide, 8 parts of calcium silicates and oxygen
Change 28 parts of magnesium.
Further, the retarder is sodium citrate.
Further, the early strength agent is triethanolamine.
Claims (4)
1. a kind of early-strength cement composition, it is characterized in that, its composition is counted as follows in parts by weight：
Quick lime 50-80 parts, calcium hydroxide 5-15 parts, early strength agent 3-6 parts, retarder 1-8 parts, di-iron trioxide 10-16 parts, silicon
Sour calcium 3-8 parts and magnesia 15-28 parts.
2. a kind of early-strength cement composition as claimed in claim 1, it is characterized in that, the retarder is sodium citrate.
3. a kind of early-strength cement composition as claimed in claim 1, it is characterized in that, the early strength agent is triethanolamine.
4. a kind of early-strength cement composition as claimed in claim 1, it is characterized in that, the composition of cement composition is by weight
It is as follows to measure number meter：
65 parts of quick lime, 10 parts of calcium hydroxide, 5 parts of early strength agent, 4 parts of retarder, 13 parts of di-iron trioxide, 4 parts of calcium silicates and oxygen
Change 20 parts of magnesium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710925663.8A CN107602036A (en) | 2017-10-05 | 2017-10-05 | A kind of early-strength cement composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710925663.8A CN107602036A (en) | 2017-10-05 | 2017-10-05 | A kind of early-strength cement composition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107602036A true CN107602036A (en) | 2018-01-19 |
Family
ID=61067381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710925663.8A Withdrawn CN107602036A (en) | 2017-10-05 | 2017-10-05 | A kind of early-strength cement composition |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107602036A (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844026A (en) * | 2006-04-21 | 2006-10-11 | 华南理工大学 | A novel masonry cement |
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2017
- 2017-10-05 CN CN201710925663.8A patent/CN107602036A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1844026A (en) * | 2006-04-21 | 2006-10-11 | 华南理工大学 | A novel masonry cement |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180119 |