CN1298664C - Instant coagulant and mending agent for cement stabilized base - Google Patents
Instant coagulant and mending agent for cement stabilized base Download PDFInfo
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- CN1298664C CN1298664C CNB2005100430848A CN200510043084A CN1298664C CN 1298664 C CN1298664 C CN 1298664C CN B2005100430848 A CNB2005100430848 A CN B2005100430848A CN 200510043084 A CN200510043084 A CN 200510043084A CN 1298664 C CN1298664 C CN 1298664C
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- cement
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- stabilized base
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Abstract
The present invention discloses an instant super strength repair agent for a cement stabilized base, which is composed of components of the following percentage by weight: 0.02 to 0.03% of sucrose, 6.6 to 31.5% of Na2SO4, 3.2 to 22.1% of NaCl, 6.2 to 23.4% of fluoaluminate cement, 41.3 to 79.8% of sulphoaluminate cement and 1.0 to 5.0% of FDN water reducing agents with high efficiency. The repair agent of the present invention has the advantages of easy preservation and convenient use, can obviously enhance the early strength of the cement stabilized base to meet engineering requirements in a short time, and can accelerate the hydration of cement to enhance the early strength of the cement stabilized base and keep sustainable development of the later strength.
Description
Technical field
The invention belongs to inorganic composite materials, be applied to cement stabilized soil field in the pavement engineering, particularly a kind of early-strength repairing agent of cement stabilized base course.
Background technology
China's semi-rigid pavements that adopt on high-grade highway are mainly two-ash broken stones and cement stabilized macadam or grit more in recent years, and this structural sheet not only can provide heavy-duty vehicle essential supporting capacity, also has good whole and stability.For cement stabilized base course, present constructional method is to mix cement in rubble or grit, and grinding compacting near optimum moisture content the time forms the cement stabilized base course with good engineering properties through health.But this material have one extremely outstanding feature be that the formation of its intensity needs sufficiently long conditioned time, during this period, if the effect disturbance of load its one-piece construction, then the mechanical property of semi-rigid material can be subjected to very big influence, showing as early strength reduces significantly, later strength increases also very slow, and other performances of semi-rigid material also are a greater impact.Yet, in the tight new construction of duration and the salvaging that can not longly suspend traffic, objectively sufficiently long conditioned time can not be arranged.This just requires basic unit to reach requirement of strength so that carry out the overlay of surface layer in the short as far as possible time.Therefore semi-rigid sub-base material is carried out special processing, it is just very necessary to make it reach engine request in the short period of time.
Summary of the invention
Deficiency at existing cement stabilized base course technology, the present invention proposes a kind of early-strength repairing agent of cement stabilized base course, this healant is easy to preserve, easy to use, can obviously improve the early strength of cement stabilized base course, make it reach engine request in the short period of time, later strength can sustainable development.
Technical scheme of the present invention is achieved in that short-term strength cement stabilized base healant, and is composed of the following components by weight percentage:
Sucrose 0.02%～0.13%
Na
2SO
4 6.6％～31.5％
NaCl 3.2％～22.1％
Fluoroaluminate cement 6.2%～23.4%
Aluminosulfate cement 41.3%～79.8%
FDN high efficiency water reducing agent 1.0%～5.0%
The mechanism that the present invention comprises mainly is two aspects: be by accelerating the setting and harden of cement, the aquation quantity of cement mesosilicic acid salt is increased, improving early strength on the one hand; Be innerly in the hardening accelerator that mixes to contain an amount of resistance and split and expansion component on the other hand, can eliminate or reduce the portion water mudstone and shrink the internal stress that is produced, and further reduce and gathered materials-grout defective at the interface.
In this healant making processes, earlier above-mentioned each component is prepared into specific surface area 〉=3000cm
2The powder body material of/g mixes by above-mentioned mass ratio and forms.In engineering application, its consumption is 3%～15% of a cement weight.
Healant of the present invention is through laboratory test, and with the cement stabilizing material compared of not mixing healant, the ratio that the ratio of the cement stabilizing material of interpolation healant intensity raising in 24 hours surpasses intensity raising in 20%, 3 day surpasses 15%.Part test the results are shown in table-1.
Part test is table-1 as a result
| Project | Ultimate compression strength (MPa) | ||
| 1d | 2d | 3d | |
| Cement dosage 5% Portland cement stabilization gravel | 2.45 | 4.28 | 4.99 |
| Cement dosage 5% admixture | 3.27 | 5.23 | 5.94 |
| The cement stabilized macadam of 8% hardening accelerator |
Embodiment
Hardening accelerator of the present invention is that each component is made powder body material (its surface-area 〉=3000m earlier
2/ kg), mix in proportion and make healant.When using, it is added in the cement as a kind of additive, its consumption is 3%～15% of a cement weight.When mixing the system compound,, add entry again and continue to mix and stir to forming uniform cement stabilized macadam compound earlier with rubble, cement and healant uniform mixing.
The test method that the present invention is used, what compaction test adopted stabilized with inorganic binder soil in " highway engineering stabilized with inorganic binder testing of materials rules " (JTJ 057-94) hits real using method (T0804-94), and compressive strength test adopts the unconfined compressive strenght test method (T0805-94) of the stabilized with inorganic binder soil in " highway engineering stabilized with inorganic binder testing of materials rules " (JTJ 057-94) to measure.
Embodiment 1
The early-strength repairing agent of cement stabilized base course, composed of the following components by weight percentage:
Sucrose 0.05%
Na
2SO
4 7.45％
NaCl 8.0％
Fluoroaluminate cement 7.0%
Aluminosulfate cement 75.0%
FDN high efficiency water reducing agent 2.5%
Above-mentioned each component is made specific surface area earlier greater than specific surface area 〉=3000cm
2The powder body material of/g mixes by above-mentioned mass ratio and to make healant.Pressing 15% of cement weight in cement stabilized macadam adds.Carry out compaction test according to the compaction test method (T0804-94) of the stabilized with inorganic binder soil in " highway engineering stabilized with inorganic binder testing of materials rules " (JTJ 057-94) then and determine maximum dry density and optimum moisture content.Compactness according to 98% adopts the unconfined compressive strenght test method (T0805-94) of the stabilized with inorganic binder soil in " highway engineering stabilized with inorganic binder testing of materials rules " (JTJ 057-94) to make a strength test.Its ultimate compression strength is as table-2.
Short-term strength cement stabilization gravel pressure resistance kilsyth basalt-2
| The length of time, h | 16 | 24 |
| Ultimate compression strength, MPa | 3.82 | 4.35 |
As table-2, the cement stabilized macadam intensity 16h of admixture early-strength repairing agent just can reach 3.82MPa.
Embodiment 2
The early-strength repairing agent of cement stabilized base course, composed of the following components by weight percentage:
Sucrose 0.07%
Na
2SO
4 18.63％
NaCl 12.5％
Fluoroaluminate cement 12.3%
Aluminosulfate cement 54.0%
FDN high efficiency water reducing agent 2.5%
Above-mentioned each component is made specific surface area earlier greater than specific surface area 〉=3000cm
2The powder body material of/g mixes by above-mentioned mass ratio and to make healant.Pressing 15% of cement weight in cement stabilized macadam adds.Carry out compaction test according to the compaction test method (T0804-94) of the stabilized with inorganic binder soil in " highway engineering stabilized with inorganic binder testing of materials rules " (JTJ 057-94) then and determine maximum dry density and optimum moisture content.Compactness according to 98% adopts the unconfined compressive strenght test method (T0805-94) of the stabilized with inorganic binder soil in " highway engineering stabilized with inorganic binder testing of materials rules " (JTJ 057-94) to make a strength test.Its ultimate compression strength is as table-3.
Short-term strength cement stabilization gravel pressure resistance kilsyth basalt-3
| The length of time, h | 16 | 24 |
| Ultimate compression strength, MPa | 3.74 | 4.28 |
As table-3, the cement stabilized macadam intensity 16h of admixture early-strength repairing agent just can reach 3.74MPa.
Embodiment 3
The early-strength repairing agent of cement stabilized base course, composed of the following components by weight percentage:
Sucrose 0.11%
Na
2SO
4 19.99％
NaCl 19.3％
Fluoroaluminate cement 14.3%
Aluminosulfate cement 42.8%
FDN high efficiency water reducing agent 3.5%
Above-mentioned each component is made specific surface area earlier greater than specific surface area 〉=3000cm
2The powder body material of/g mixes by above-mentioned mass ratio and to make healant.Pressing 15% of cement weight in cement stabilized macadam adds.Carry out compaction test according to the compaction test method (T0804-94) of the stabilized with inorganic binder soil in " highway engineering stabilized with inorganic binder testing of materials rules " (JTJ 057-94) then and determine maximum dry density and optimum moisture content.Compactness according to 98%, " the unconfined compressive strenght test method (T0805-94) of the stabilized with inorganic binder soil in the highway engineering stabilized with inorganic binder testing of materials rules (JTJ 057-94) makes a strength test in employing.Its ultimate compression strength is as table-4.
Short-term strength cement stabilization gravel pressure resistance kilsyth basalt-4
| The length of time, h | 16 | 24 |
| Ultimate compression strength, MPa | 3.69 | 4.16 |
As table-4, the cement stabilized macadam intensity 16h of admixture early-strength repairing agent just can reach 3.69MPa.
Embodiment 4
The early-strength repairing agent of cement stabilized base course, composed of the following components by weight percentage:
Sucrose 0.03%
Na
2SO
4 19.27％
NaCl 8.4％
Fluoroaluminate cement 18.0%
Aluminosulfate cement 50.8%
FDN high efficiency water reducing agent 3.5%
Present embodiment preparation temperature is 25 ℃, and 16h can overlay the short-term strength cement stabilization gravel of surface layer.Above-mentioned each component is made specific surface area earlier greater than specific surface area 〉=3000cm
2The powder body material of/g mixes by above-mentioned mass ratio and to make healant.Pressing 15% of cement weight in cement stabilized macadam adds.Carry out compaction test according to the compaction test method (T0804-94) of the stabilized with inorganic binder soil in " highway engineering stabilized with inorganic binder testing of materials rules " (JTJ 057-94) then and determine maximum dry density and optimum moisture content.Compactness according to 98% adopts the unconfined compressive strenght test method (T0805-94) of the stabilized with inorganic binder soil in " highway engineering stabilized with inorganic binder testing of materials rules " (JTJ 057-94) to make a strength test.Its ultimate compression strength is as table-5.
Short-term strength cement stabilization gravel pressure resistance kilsyth basalt-5
| The length of time, h | 16 | 24 |
| Ultimate compression strength, MPa | 3.78 | 4.25 |
As table-5, admixture early-strength repairing agent 16h just can reach requirement of strength.
Embodiment 5
The early-strength repairing agent of cement stabilized base course, composed of the following components by weight percentage:
Sucrose 0.09%
Na
2SO
4 14.91％
NaCl 11.0％
Fluoroaluminate cement 12.0%
Aluminosulfate cement 59.0%
FDN high efficiency water reducing agent 3.0%
Present embodiment preparation temperature is 17 ℃, and 48h can overlay the short-term strength cement stabilization gravel of surface layer.Above-mentioned each component is made specific surface area earlier greater than specific surface area 〉=3000cm
2The powder body material of/g mixes by above-mentioned mass ratio and to make healant.Pressing 8% of cement weight in cement stabilized macadam adds.Carry out compaction test according to the compaction test method (T0804-94) of the stabilized with inorganic binder soil in " highway engineering stabilized with inorganic binder testing of materials rules " (JTJ 057-94) then and determine maximum dry density and optimum moisture content.Compactness according to 98%, " the unconfined compressive strenght test method (T0805-94) of the stabilized with inorganic binder soil in the highway engineering stabilized with inorganic binder testing of materials rules (JTJ 057-94) makes a strength test in employing.Its ultimate compression strength is as table-6.
Table-6 short-term strength cement stabilization gravel ultimate compression strength
| The length of time, h | 48 | 72 |
| Ultimate compression strength, MPa | 3.96 | 4.23 |
As table-6, admixture early-strength repairing agent 48h just can reach requirement of strength.
Embodiment 6
The early-strength repairing agent of cement stabilized base course, composed of the following components by weight percentage:
Sucrose 0.10%
Na
2SO
4 15.51％
NaCl 10.0％
Fluoroaluminate cement 14.0%
Aluminosulfate cement 57.29%
FDN high efficiency water reducing agent 3.1%
Present embodiment preparation temperature is 20 ℃, and 36h can overlay the short-term strength cement stabilization gravel of surface layer.Above-mentioned each component is made specific surface area earlier greater than specific surface area 〉=3000cm
2The powder body material of/g mixes by above-mentioned mass ratio and to make healant.Pressing 15% of cement weight in cement stabilized macadam adds.Carry out compaction test according to the compaction test method (T0804-94) of the stabilized with inorganic binder soil in " highway engineering stabilized with inorganic binder testing of materials rules " (JTJ 057-94) then and determine maximum dry density and optimum moisture content.Compactness according to 98%, " the unconfined compressive strenght test method (T0805-94) of the stabilized with inorganic binder soil in the highway engineering stabilized with inorganic binder testing of materials rules (JTJ 057-94) makes a strength test in employing.Its ultimate compression strength is as table-7.
Table-7 short-term strength cement stabilization gravel ultimate compression strength
| The length of time, h | 36 | 48 |
| Ultimate compression strength, MPa | 3.18 | 3.65 |
As table-7, admixture early-strength repairing agent 36h can reach requirement of strength.
Claims (7)
1. the early-strength repairing agent of a cement stabilized base course is characterized in that, and is composed of the following components by weight percentage:
Sucrose 0.02%～0.13%
Na
2SO
4 6.6％～31.5％
NaCl 3.2％～22.1％
Fluoroaluminate cement 6.2%～23.4%
Aluminosulfate cement 41.3%～79.8%
FDN high efficiency water reducing agent 1.0%～5.0%
2. the early-strength repairing agent of cement stabilized base course according to claim 1 is characterized in that, and is composed of the following components by weight percentage:
Sucrose 0.05%
Na
2SO
4 7.45％
NaCl 8.0％
Fluoroaluminate cement 7.0%
Aluminosulfate cement 75.0%
FDN high efficiency water reducing agent 2.5%
3. the early-strength repairing agent of cement stabilized base course according to claim 1 is characterized in that, and is composed of the following components by weight percentage:
Sucrose 0.07%
Na
2SO
4 18.63％
NaCl 12.5％
Fluoroaluminate cement 12.3%
Aluminosulfate cement 54.0%
FDN high efficiency water reducing agent 2.5%
4. the early-strength repairing agent of cement stabilized base course according to claim 1 is characterized in that, and is composed of the following components by weight percentage:
Sucrose 0.11%
Na
2SO
4 19.99％
NaCl 19.3％
Fluoroaluminate cement 14.3%
Aluminosulfate cement 42.8%
FDN high efficiency water reducing agent 3.5%
5. the early-strength repairing agent of cement stabilized base course according to claim 1 is characterized in that, and is composed of the following components by weight percentage:
Sucrose 0.03%
Na
2SO
4 19.27％
NaCl 8.4％
Fluoroaluminate cement 18.0%
Aluminosulfate cement 50.8%
FDN high efficiency water reducing agent 3.5%
6. the early-strength repairing agent of cement stabilized base course according to claim 1 is characterized in that, and is composed of the following components by weight percentage:
Sucrose 0.09%
Na
2SO
4 14.91％
NaCl 11.0％
Fluoroaluminate cement 12.0%
Aluminosulfate cement 59.0%
FDN high efficiency water reducing agent 3.0%
7. the early-strength repairing agent of cement stabilized base course according to claim 1 is characterized in that, and is composed of the following components by weight percentage:
Sucrose 0.10%
Na
2SO
4 15.51％
NaCl 10.0％
Fluoroaluminate cement 14.0%
Aluminosulfate cement 57.29%
FDN high efficiency water reducing agent 3.1%
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100430848A CN1298664C (en) | 2005-08-11 | 2005-08-11 | Instant coagulant and mending agent for cement stabilized base |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100430848A CN1298664C (en) | 2005-08-11 | 2005-08-11 | Instant coagulant and mending agent for cement stabilized base |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1736939A CN1736939A (en) | 2006-02-22 |
| CN1298664C true CN1298664C (en) | 2007-02-07 |
Family
ID=36079926
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100430848A Expired - Fee Related CN1298664C (en) | 2005-08-11 | 2005-08-11 | Instant coagulant and mending agent for cement stabilized base |
Country Status (1)
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|---|---|
| CN (1) | CN1298664C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100450966C (en) * | 2006-04-30 | 2009-01-14 | 江苏博特新材料有限公司 | Quick repairing agent for cement concrete |
| CN105271873A (en) * | 2015-11-27 | 2016-01-27 | 长安大学 | Early-strength anti-cracking admixture for cement-stabilized base as well as preparation and using methods of early-strength anti-cracking admixture |
| CN106277968B (en) * | 2016-08-08 | 2018-12-11 | 中铁二局集团有限公司 | A kind of mixture for high altitudes and cold region road cement treated material cracking resistance |
| CN106833568B (en) * | 2017-01-19 | 2020-10-20 | 安徽理工大学 | Early-strength mining hole sealing material |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271701A (en) * | 1999-04-26 | 2000-11-01 | 曾再鉌 | Repairing agent for structural cement members |
| CN1357507A (en) * | 2001-11-10 | 2002-07-10 | 李乃珍 | Fast concrete road and bridge repairing material |
| CN1454867A (en) * | 2003-05-26 | 2003-11-12 | 四川嘉华企业（集团）股份有限公司 | Road rapid mending agent |
-
2005
- 2005-08-11 CN CNB2005100430848A patent/CN1298664C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1271701A (en) * | 1999-04-26 | 2000-11-01 | 曾再鉌 | Repairing agent for structural cement members |
| CN1357507A (en) * | 2001-11-10 | 2002-07-10 | 李乃珍 | Fast concrete road and bridge repairing material |
| CN1454867A (en) * | 2003-05-26 | 2003-11-12 | 四川嘉华企业（集团）股份有限公司 | Road rapid mending agent |
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| Publication number | Publication date |
|---|---|
| CN1736939A (en) | 2006-02-22 |
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