CN103073213A - Application of micron shell powder as fortifier for early strength of cement - Google Patents
Application of micron shell powder as fortifier for early strength of cement Download PDFInfo
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- CN103073213A CN103073213A CN2013100389000A CN201310038900A CN103073213A CN 103073213 A CN103073213 A CN 103073213A CN 2013100389000 A CN2013100389000 A CN 2013100389000A CN 201310038900 A CN201310038900 A CN 201310038900A CN 103073213 A CN103073213 A CN 103073213A
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- oyster shell
- shell whiting
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Abstract
The invention relates to an application of micron shell powder as a fortifier for early strength of cement, and belongs to the field of building materials. The micron shell powder serves as a modifier for improving the early strength of the cement, so that the problem that the structural durability is reduced caused by early damages of concrete due to the fact that the early strength of an ordinary cement-based material is low is solved.
Description
Technical field
The present invention relates to the micron order oyster shell whiting as the application of cement early strength toughener, belong to building material field.
Background technology
Cement-based material is widely used in the Infrastructure such as house, bridge, coastal dykes and dams, but along with the development of economic construction, and the performance of cement-based material has also been proposed requirements at the higher level; In the actual concrete structure engineering, building early stage just bearing load and suffering the erosion of objectionable impurities, certainly will cause the cement-based material performance degradation, cause structure to form initial damage, directly affect the works weather resistance.The early stage performance (mechanical property, endurance quality) that how to improve cement-based material is significant to improving concrete structure durability, and correlative study progressively causes the attention of domestic and international civil engineering field.
The micron order oyster shell whiting is the mineral filler that obtains through levigate and surface modification treatment after natural seashell is pulverized, has higher intensity, but in existing research, have no the report of the modified cement-based material property of relevant micron order oyster shell whiting, for the problems referred to above, research micron order oyster shell whiting is very necessary to the influence of cement early strength.
Summary of the invention
The purpose of this invention is to provide the micron order oyster shell whiting as the application of cement early strength toughener, by utilizing a kind of preparation method that can improve cement early strength of micron order oyster shell whiting development, cause concrete earlier damage thereby solve because Portland cement sill early strength is low, the problem that causes structure durability to reduce.
The micron order oyster shell whiting is as the application of cement early strength toughener.
Oyster shell whiting of the present invention refers to the mineral filler that obtains through levigate and surface modification treatment after natural seashell is pulverized, and this type of oyster shell whiting has higher intensity.
The particle diameter of the preferred described micron order oyster shell whiting of the present invention is 1 ~ 3 micron.
Micron order oyster shell whiting of the present invention accounts for 1% ~ 5% of oyster shell whiting and Portland cement total mass as the preferred described micron order oyster shell whiting of the application of cement early strength toughener, and more preferably 3%.
Micron order oyster shell whiting of the present invention adds wherein when utilizing cement to prepare cement, cement mortar and concrete.
Another object of the present invention provides a kind of micron order oyster shell whiting modified cement.
The described modified cement of a kind of micron order oyster shell whiting modified cement is comprised of micron order oyster shell whiting and Portland cement, and described micron order oyster shell whiting accounts for 1% ~ 5% of oyster shell whiting and Portland cement total mass.
Another purpose of the present invention provides a kind of preparation method of micron order oyster shell whiting modified cement.
A kind of preparation method of micron order oyster shell whiting modified cement comprises the pretreated step of micron order oyster shell whiting, and described pretreated step is that micron order oyster shell whiting ultra-sonic dispersion in water is also stirred at least 15min simultaneously.
The preferred described pretreated step of the preparation method of above-mentioned modified cement is that micron order oyster shell whiting ultra-sonic dispersion in water is also stirred 15min simultaneously.
The preparation method of cement of the present invention preferably will mix with Portland cement through the micron order oyster shell whiting that pre-treatment step obtains, preparation method according to the Portland cement test specimen prepares a micron oyster shell whiting modified cement test specimen, after test material preparation is good, put into standard curing box (temperature is 20 ± 1 ℃, relative humidity 〉=95%) maintenance, form removal and continue in standard curing box maintenance to stipulating the length of time early strength of the cement specimen that can improve after 1 day.
The invention has the beneficial effects as follows: it is simple that the present invention mixes technique processed, and the abundant raw materials of micron oyster shell whiting preparation is obtained conveniently, realized refuse reclamation, environmental protection, and energy Effective Raise cement early strength can provide new research direction for the weather resistance that improves cement-based material.
Description of drawings
Accompanying drawing 3 width of cloth of the present invention,
Fig. 1 is the microscopic appearance figure of embodiment 1 used oyster shell whiting;
Fig. 2 is 3 days curing age folding strengths of embodiment 1 different cement specimens;
Fig. 3 is 3 days curing age ultimate compression strength of embodiment 1 different cement specimens.
Embodiment
Following non-limiting example can make the present invention of those of ordinary skill in the art's comprehend, but does not limit the present invention in any way.
Used micron order oyster shell whiting is the Mel bio tech ltd production of Tianjin China among the following embodiment.
The used micron order oyster shell whiting of the present invention, its particle diameter is 1 ~ 3 micron, and Fig. 1 has provided the microscopic appearance of micron oyster shell whiting, utilizes DS-5510DTH type Ultrasonic Cleaners in the test, and the micron order oyster shell whiting is carried out ultra-sonic dispersion, and its power is 300W.
(1) proportioning of Portland cement test specimen and micron order oyster shell whiting cement specimen sees Table 1.
The water-cement ratio of cement specimen is 0.5 in the test, according to 1% of modified cement quality, 3%, 5% takes by weighing a micron oyster shell whiting, then with micron oyster shell whiting ultra-sonic dispersion 15 minutes and cooperate glass stick to stir in water, ultrasonic power is 300W, then the preparation method according to Portland cement test specimen in China's current standards " highway engineering cement and cement concrete testing regulation " (JTG E30-2005) prepares micron order oyster shell whiting cement specimen, after test material preparation is good, (temperature is 20 ± 1 ℃ to put into standard curing box, relative humidity 〉=95%) maintenance, form removal and continue in standard curing box maintenance to 3 day test length of time after 1 day.
The material fiting ratio of table 1 cement specimen
| The test specimen numbering | Water/g | Cement/g | Micron order oyster shell whiting/g |
| CO | 200 | 400 | 0 |
| CB1 | 200 | 396 | 4 |
| CB2 | 200 | 388 | 12 |
| CB3 | 200 | 380 | 20 |
(2) when maintenance to the test length of time after, take out cement specimen, utilize Intensity of Breaking Tester, pressure testing machine (YAW-YAW2000A type 200t microcomputer controlled electro-hydraulic servo pressure testing machine) to test its folding strength and ultimate compression strength, concrete testing data such as table 2 and Fig. 2, shown in Figure 3.
Table 2 Portland cement and 3 days intensity contrast of micron oyster shell whiting modified cement test specimen
Can be found out that by data in the table 2 and Fig. 2 and 3 mix the micron order oyster shell whiting and can improve 3 days intensity of cement, when the oyster shell whiting volume was 3%, it was the most obvious to improve effect, can improve folding strength 21.14% than Portland cement, improve ultimate compression strength 10%.
So we can draw, and a small amount of micron order oyster shell whiting of interpolation can effectively improve cement early strength in cement.
Claims (7)
1. the micron order oyster shell whiting is as the application of cement early strength toughener.
2. application according to claim 1 is characterized in that: the particle diameter of described micron order oyster shell whiting is 1 ~ 3 micron.
3. application according to claim 1 is characterized in that: described micron order oyster shell whiting accounts for 1% ~ 5% of oyster shell whiting and Portland cement total mass.
4. application according to claim 3 is characterized in that: described micron order oyster shell whiting accounts for 3% of oyster shell whiting and Portland cement total mass.
5. micron order oyster shell whiting modified cement, it is characterized in that: described modified cement is comprised of micron order oyster shell whiting and Portland cement, and described micron order oyster shell whiting accounts for 1% ~ 5% of oyster shell whiting and Portland cement total mass.
6. the preparation method of a micron order oyster shell whiting modified cement is characterized in that: comprise the pretreated step of micron order oyster shell whiting, described pretreated step is that the micron order oyster shell whiting is disperseed and stirs simultaneously at least 15min in deionized water for ultrasonic.
7. according to claim 6 method is characterized in that: described pretreated step is that the micron order oyster shell whiting is disperseed and stirs simultaneously 15min in deionized water for ultrasonic.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100389000A CN103073213A (en) | 2013-01-31 | 2013-01-31 | Application of micron shell powder as fortifier for early strength of cement |
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| CN2013100389000A CN103073213A (en) | 2013-01-31 | 2013-01-31 | Application of micron shell powder as fortifier for early strength of cement |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109095850A (en) * | 2018-08-25 | 2018-12-28 | 北京建工新型建材有限责任公司 | A kind of concrete mix and its Winter Construction Methods of high early strength |
| CN109678402A (en) * | 2018-12-25 | 2019-04-26 | 陕西科技大学 | A kind of micron order silicon carbide and the high resistance to compression High anti bending cement of micro- steel fibre collaboration enhancing combines and expect and forming method |
| CN111825394A (en) * | 2020-07-23 | 2020-10-27 | 广州市广丰混凝土有限公司 | Anti-crack concrete |
| CN111995381A (en) * | 2020-09-04 | 2020-11-27 | 湖州市练市合力建材有限公司 | Permeable cement brick |
| CN113387716A (en) * | 2021-07-09 | 2021-09-14 | 浙江利安特新型墙材有限公司 | Autoclaved aerated concrete block formula |
| CN115231851A (en) * | 2022-07-22 | 2022-10-25 | 广西科达新材料集团有限公司 | High-strength concrete early strength agent and preparation method thereof |
Citations (1)
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| CN102603235A (en) * | 2012-03-14 | 2012-07-25 | 河海大学 | Carbon nano-tube cement-based waterproof material and preparation method thereof |
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2013
- 2013-01-31 CN CN2013100389000A patent/CN103073213A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102603235A (en) * | 2012-03-14 | 2012-07-25 | 河海大学 | Carbon nano-tube cement-based waterproof material and preparation method thereof |
Non-Patent Citations (3)
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| 徐迅等: "超细碳酸钙对水泥强度性能和微观结构的影响研究", 《山东建材》 * |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109095850A (en) * | 2018-08-25 | 2018-12-28 | 北京建工新型建材有限责任公司 | A kind of concrete mix and its Winter Construction Methods of high early strength |
| CN109095850B (en) * | 2018-08-25 | 2021-07-20 | 北京建工新型建材有限责任公司 | High-early-strength concrete mixture and winter construction method thereof |
| CN109678402A (en) * | 2018-12-25 | 2019-04-26 | 陕西科技大学 | A kind of micron order silicon carbide and the high resistance to compression High anti bending cement of micro- steel fibre collaboration enhancing combines and expect and forming method |
| CN111825394A (en) * | 2020-07-23 | 2020-10-27 | 广州市广丰混凝土有限公司 | Anti-crack concrete |
| CN111995381A (en) * | 2020-09-04 | 2020-11-27 | 湖州市练市合力建材有限公司 | Permeable cement brick |
| CN113387716A (en) * | 2021-07-09 | 2021-09-14 | 浙江利安特新型墙材有限公司 | Autoclaved aerated concrete block formula |
| CN115231851A (en) * | 2022-07-22 | 2022-10-25 | 广西科达新材料集团有限公司 | High-strength concrete early strength agent and preparation method thereof |
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Application publication date: 20130501 |