CN102603222A - Cement-stabilized macadam foundation reinforcing composite additive - Google Patents
Cement-stabilized macadam foundation reinforcing composite additive Download PDFInfo
- Publication number
- CN102603222A CN102603222A CN2012100839506A CN201210083950A CN102603222A CN 102603222 A CN102603222 A CN 102603222A CN 2012100839506 A CN2012100839506 A CN 2012100839506A CN 201210083950 A CN201210083950 A CN 201210083950A CN 102603222 A CN102603222 A CN 102603222A
- Authority
- CN
- China
- Prior art keywords
- cement
- stabilized macadam
- test
- compound additive
- composite additive
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention belongs to the technical field of materials, and discloses a cement-stabilized macadam foundation reinforcing composite additive (using pulverized fuel ash as a carrier) which comprises triethanolamine, naphthalene formaldehyde water reducers and sodium sulfate or calcium chloride, wherein the mass ratio of triethanolamine to naphthalene formaldehyde water reducers to sodium sulfate or calcium chloride is 1:(12-20):(30-40). Due to different weight proportions of the components, the composite additive is suitable for construction of cement-stabilized macadam foundations at different temperatures, and after the composite additive is soaked in cement-stabilized macadam, the early no-lateral confinement compressive strength of the cement-stabilized macadam is obviously improved, the 1d strength can meet the requirement of the designed 7d strength, and 90d indirect tensile strength and compressive rebound modulus both meet requirement; after the composite additive is soaked in the cement-stabilized macadam, the shrinkage character of the cement-stabilized macadam is effectively improved, and the capacities of resisting drying shrinkage and temperature shrinkage of the cement-stabilized macadam are improved.
Description
Technical field
The invention belongs to the material technology field, be specifically related to a kind of cement stabilized macadam base reinforcement compound additive.
Background technology
Quick growth along with the volume of traffic and load; The destruction of roadbase is increasing, and the basic unit of China 70%-80% is a cement stabilized macadam base, and the maintenance of cement stabilized macadam base needs 7 days at least usually; Open to traffic then needs 8 days, and this has just seriously hindered traffic.So the quick of cement stabilized base course repaired into extremely urgent problem.At present, cement stabilized macadam base fast repairing method commonly used in the construction has, and one, adopt fast hardening concrete to come the remedial cement stabilized macadam base; Though this method is repaired the intensity height; Speed is fast, but it shrinks seriously damage easy to crack; Young's modulus and surface layer do not match simultaneously, are prone to make surface layer to form rut; The quick supporting material that two, will be applicable to cement concrete is applied in the cement stabilized macadam, and whether this quick supporting material and cement stabilized macadam mate on the knees of the gods; Three, replace Portland cement to mix cement stabilized macadam base with super-rapid hardening cement, reach the effect of quick reinforcement, difficult preservation of this cement and volume are excessive, and cost is high, is not suitable for big area and promotes.
Therefore; For these reasons, develop a kind of cement stabilized base course that is applicable to, and volume is few, cost is low; Make the cement stabilized macadam early strength high; The quick supporting material of little cement stabilized macadam base is shunk in the later strength sustainable development, has realistic meaning for improving the cement stabilized macadam base rapid construction.
Summary of the invention
Technical problem to be solved by this invention is to overcome above-mentioned common quick supporting material volume height, cost is high and not exclusively to the problem of cement stabilized macadam base, a kind of cement stabilized macadam base reinforcement compound additive is provided.
For realizing above-mentioned purpose, the technical scheme that the present invention takes is following:
Cement stabilized macadam base reinforcement compound additive is made up of naphthalene water reducer, trolamine, sodium sulfate or calcium chloride, by mass ratio, and trolamine: naphthalene water reducer: sodium sulfate or calcium chloride=1:12 ~ 20:30 ~ 40.
Preferred JKSW-1 type, trolamine: naphthalene water reducer: sodium sulfate or calcium chloride=1:20:36, this optimum ratio are suitable for normal temperature (20 ℃) construction.
Preferred JKSW-2 type, trolamine: naphthalene water reducer: sodium sulfate=1:12:30, this optimum ratio are suitable for high temperature (30 ℃) construction.
Preferred JKSW-3 type, trolamine: naphthalene water reducer: calcium chloride=1:20:40, this optimum ratio are suitable for low temperature (10 ℃) construction.
The naphthalene water reducer proterties is a chocolate brown powder, and effect is to reduce water consumption, reduces dry-shrinkage deformed and improves the workability of cement stabilizing material; Trolamine, sodium sulfate or calcium chloride proterties are white powder, and effect is to quicken hydration rate behind the cement stabilizing forming materials, improves its early strength.
Compound additive of the present invention is applicable to the construction of cement stabilized macadam base under the differing temps owing to the difference of each proportioning; And mixing of compound additive improved the early stage unconfined compression strength of cement stabilized macadam significantly; 1d intensity can satisfy the 7d requirement of strength of design; And 90d indirect tensile strength and compression rebound modulu all meet the demands, and improve the shrinkage character of cement stabilized macadam effectively, have improved the ability that cement stabilized macadam opposing dry shrinkage and temperature are shunk.
Embodiment
All kinds of component proportionss of different composite admixture (mass ratio) are as shown in table 1.All kinds of components in certain proportion are mixed to be prepared into compound additive.
Performance test
The cement that adopts among the present invention is the ordinary Portland cement that Henan electricity cement ltd of group in the Meng (Jiao) produces, and strength grade is 42.5.
Sand-cement slurry pressure-proof and snap-resistent test during test 1--normal temperature
Prepare compound additive separately by table 1 proportioning; During construction ordinary Portland cement 450g, water 225g, medium sand 1350g and compound additive (account for cement quality 3%) are added stirrer simultaneously; Stir into sand-cement slurry, 20 ℃ of construction temperatures, test-results is seen table 2 and table 3.
This test-results shows: the sand-cement slurry 16h and the 1d intensity of mixing embodiment 1-8 or 2-8 compound additive are higher, and 3d and 7d intensity also improve a lot simultaneously, also satisfy construction requirement simultaneously their time of coagulation.
Sand-cement slurry pressure-proof and snap-resistent test during test 2--low temperature
Select embodiment 2-9 compound additive for use, make low-temperature test, and increase Comparative Examples 2-9-1 and 2-9-2.Trolamine in the embodiment 2-9-1 compound additive wherein: naphthalene water reducer: calcium chloride=1:20:50, trolamine in the embodiment 2-9-2 compound additive: naphthalene water reducer: calcium chloride=1:20:70).During construction ordinary Portland cement 450g, water 225g, medium sand 1350g and compound additive (account for cement quality 3%) are added stirrer simultaneously, stir into sand-cement slurry, 10 ℃ of construction temperatures, test-results is seen table 4.
This test-results shows: the early strength of admixture Comparative Examples 2-9-1,2-9-2 compound additive cement mortar is better, but the time of coagulation of admixture Comparative Examples 2-9-1,2-9-2 compound additive cement mortar is too short, can not satisfy construction requirement.Therefore, when low-temperature construction, select embodiment 2-9 compound additive for use.
Sand-cement slurry pressure-proof and snap-resistent test during test 3--high temperature
Select embodiment 1-1 compound additive for use, do high temperature test.During construction ordinary Portland cement 450g, water 225g, medium sand 1350g and compound additive (account for cement quality 3%) are added stirrer simultaneously, stir into sand-cement slurry, 30 ℃ of construction temperatures, test-results is seen table 5.
Cement stabilized macadam unconfined compression test during test 4--normal temperature
Unconfined compressive strenght test is confirmed the maximum dry density and the optimum moisture content of various cement dosage according to compaction test, is that (sample dimensions is Φ 150mm * 150mm) to controlling index hydrostatic profile test specimen with 98% compactness.Other is carried out by existing " highway road surface construction technique normalizing " (JTJ 034-2000).
For compound additive is dispersed in the cement stabilized macadam, with the flyash of oven dry, be mixed and made into mixing powder earlier with compound additive.The mass ratio of compound additive and flyash is 1.5:1.The ginseng mixing ratio (mass percent) of cement stabilized macadam: cement 5%, mixing powder 0.25%, (medium sand+stone) 90.2% that gather materials, all the other are water.The grating of gathering materials is synthetic " S " type grating, and is as shown in table 6.
Test used starting material: the ordinary Portland cement 42.5 that Henan electricity cement ltd of group in the Meng (Jiao) produces; Flyash, gather materials, water and compound additive; Compound additive is selected embodiment 1-8 and embodiment 2-8 for use, 20 ℃ of construction temperatures, and test-results is seen table 7.
This test-results shows:
The test specimen of health under the normal temperature condition, the unconfined compression strength behind the admixture compound additive is improved largely, and amplitude is bigger.The intensity of the cement stabilized macadam 1d of admixture compound additive surpasses the not intensity of admixture compound additive 7d, and the intensity of the cement stabilized macadam 7d of admixture compound additive surpasses the not intensity of admixture compound additive 28d.
Cement stabilized macadam unconfined compression strength during test 5--low temperature
Test used starting material: the ordinary Portland cement 42.5 that electricity cement ltd of group in Henan Meng (Jiao) produces, flyash, gather materials, water and compound additive, compound additive is selected embodiment 2-9 for use, 10 ℃ of construction temperatures.The TP of being selected for use, the ginseng mixing ratio and the grating of gathering materials with test in 4 identically, test-results is seen table 8.
This test-results shows:
With the unconfined compression strength of admixture compound additive health test specimen under coldcondition and low temperature not the intensity of admixture compound additive test specimen compare; The intensity of the cement stabilized macadam 1d of admixture compound additive surpasses the not intensity of admixture compound additive 7d, and the intensity of the cement stabilized macadam 7d of admixture admixture surpasses the not intensity of admixture compound additive 28d.
Cement stabilized macadam unconfined compression strength during test 6--high temperature
Test used starting material: the ordinary Portland cement 42.5 that electricity cement ltd of group in Henan Meng (Jiao) produces, flyash, gather materials, water and compound additive, compound additive is selected embodiment 1-1 for use, temperature is 30 ℃ during construction.The TP of being selected for use, the ginseng mixing ratio and the grating of gathering materials with test in 4 identically, test-results is seen table 9.
This test-results shows:
With the unconfined compression strength of admixture compound additive health test specimen under hot conditions and high temperature not the intensity of admixture compound additive test specimen compare; The intensity of the cement stabilized macadam 1d of admixture compound additive surpasses the not intensity of admixture compound additive 7d, and the intensity of the cement stabilized macadam 7d of admixture compound additive surpasses the not intensity of admixture compound additive 28d.
Test 7--cement stabilized macadam indirect tensile strength
The indirect tensile strength test is carried out by existing " highway road surface construction technique normalizing " (JTJ034-2000).
Test used starting material: the ordinary Portland cement 42.5 that electricity cement ltd of group in Henan Meng (Jiao) produces, flyash, gather materials, water and compound additive, compound additive is selected embodiment 1-1,1-8,2-8,2-9 for use.Ginseng mixing ratio of being selected for use and the grating of gathering materials are identical in 4 with test, and test-results is seen table 10.
This test-results shows:
Indirect tensile strength ratio behind the admixture compound additive not indirect tensile strength of admixture compound additive improves to some extent.
Test 8--cement stabilized macadam compression rebound modulu
The compression rebound modulu test is carried out the test of test specimen compression rebound modulu according to relevant end face method (T 0808-94) regulation in " highway engineering stabilized with inorganic binder testing of materials rules " (JTJ 057-94).
Test used starting material: the ordinary Portland cement 42.5 that electricity cement ltd of group in Henan Meng (Jiao) produces, flyash, gather materials, water and compound additive, compound additive is selected embodiment 1-1,1-8,2-8,2-9 for use.Ginseng mixing ratio of being selected for use and the grating of gathering materials are identical in 4 with test, and test-results is seen table 11.
This test-results shows:
Compression rebound modulu behind the admixture compound additive all increases.What wherein embodiment 2-9 improved is maximum, has improved 25%.
The test of test 9--dry shrinkage
The drying shrinkage test is with reference to " cement and cement concrete testing regulation " (JTG E30-2005), and the cement concrete dry shrinkage test method is carried out, probe temperature: 20 ℃, and humidity: 60%.Test used starting material: the ordinary Portland cement 42.5 that electricity cement ltd of group in Henan Meng (Jiao) produces, flyash, gather materials, water and compound additive, compound additive is selected embodiment 1-1,1-8,2-8,2-9 for use.Ginseng mixing ratio of being selected for use and the grating of gathering materials are identical in 4 with test, and test-results is seen table 12.
This test-results shows:
The drying shrinkage strained Changing Pattern of admixture compound additive and the cement stabilized macadam of not mixing compound additive is very similar, all is to increase along with the growth in the length of time.Identical test is during the length of time, and the cement stabilized macadam drying shrinkage strain of admixture compound additive is not maximum, the minimum of embodiment 1-1, and embodiment 1-8, embodiment 2-8 and embodiment 2-9 fall between.
The admixture compound additive is also very similar with the WL Changing Pattern of the cement stabilized macadam of not mixing compound additive; WL all is growth in time and increasing; Identical test is during the length of time; The cement stabilized macadam drying shrinkage strain of admixture compound additive is not maximum, the minimum of embodiment 1-1, and embodiment 1-8, embodiment 2-8 and embodiment 2-9 fall between.
Test 10--temperature shrinkage test
Temperature contracts coefficients by using with reference to " highway engineering stabilized with inorganic binder testing of materials rules " (JTG E51-2009); The stabilized with inorganic binder material temperature TP strain gauge method that contracts is carried out; Test used starting material: the ordinary Portland cement 42.5 that Henan electricity cement ltd of group in the Meng (Jiao) produces; Flyash, gather materials, water and compound additive, compound additive is selected embodiment 1-1,1-8,2-8,2-9 for use.Ginseng mixing ratio of being selected for use and the grating of gathering materials are identical in 4 with test, and test-results is seen table 13.
Can find out from above test-results, compound additive mix the temperature shrinkage character that can significantly improve the cement stabilized macadam material, improve the ability that cement stabilized macadam material opposing temperature is shunk.
Conclusion (of pressure testing)
(1) composite additive is applicable to the construction of cement stabilized macadam base under the differing temps owing to the difference of each proportioning; It mixes and has improved the early stage unconfined compression strength of cement stabilized macadam significantly; 1d intensity can satisfy the 7d requirement of strength of design, and 90d indirect tensile strength and compression rebound modulu all meet the demands.
(2) composite additive mix the shrinkage character of improving cement stabilized macadam effectively, improved the ability of cement stabilized macadam opposing dry shrinkage and temperature contraction.
Claims (4)
1. cement stabilized macadam base reinforcement compound additive is characterized in that being made up of naphthalene water reducer, trolamine, sodium sulfate or calcium chloride, by mass ratio, and trolamine: naphthalene water reducer: sodium sulfate or calcium chloride=1:12 ~ 20:30 ~ 40.
2. cement stabilized macadam base reinforcement compound additive as claimed in claim 1 is characterized in that: trolamine: naphthalene water reducer: sodium sulfate or calcium chloride=1:20:36.
3. cement stabilized macadam base reinforcement compound additive as claimed in claim 1 is characterized in that: trolamine: naphthalene water reducer: sodium sulfate=1:12:30.
4. cement stabilized macadam base reinforcement compound additive as claimed in claim 1 is characterized in that: trolamine: naphthalene water reducer: calcium chloride=1:20:40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100839506A CN102603222A (en) | 2012-03-27 | 2012-03-27 | Cement-stabilized macadam foundation reinforcing composite additive |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100839506A CN102603222A (en) | 2012-03-27 | 2012-03-27 | Cement-stabilized macadam foundation reinforcing composite additive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102603222A true CN102603222A (en) | 2012-07-25 |
Family
ID=46521082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100839506A Pending CN102603222A (en) | 2012-03-27 | 2012-03-27 | Cement-stabilized macadam foundation reinforcing composite additive |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102603222A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277968A (en) * | 2016-08-08 | 2017-01-04 | 中铁二局集团有限公司 | A kind of compound for high altitudes and cold region road cement treated material cracking resistance |
| CN106316287A (en) * | 2016-08-18 | 2017-01-11 | 大连地拓重工有限公司 | Method for preparing comprehensively stabilized pavement base material with iron tailings and waste rocks |
| CN113501682A (en) * | 2021-07-09 | 2021-10-15 | 杭州市城市建设基础工程有限公司 | Construction method of large-thickness cement stabilized macadam foundation |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154952A (en) * | 1996-01-15 | 1997-07-23 | 王永逵 | High-performance concrete special-use auxiliary material |
| JP2007131520A (en) * | 2005-10-14 | 2007-05-31 | Nippon Shokubai Co Ltd | Cement admixture |
-
2012
- 2012-03-27 CN CN2012100839506A patent/CN102603222A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1154952A (en) * | 1996-01-15 | 1997-07-23 | 王永逵 | High-performance concrete special-use auxiliary material |
| JP2007131520A (en) * | 2005-10-14 | 2007-05-31 | Nippon Shokubai Co Ltd | Cement admixture |
Non-Patent Citations (1)
| Title |
|---|
| 张军 等: "超早强混凝土研发及应用", 《混凝土》, no. 6, 31 December 2005 (2005-12-31), pages 104 - 106 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106277968A (en) * | 2016-08-08 | 2017-01-04 | 中铁二局集团有限公司 | A kind of compound for high altitudes and cold region road cement treated material cracking resistance |
| 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 |
| CN106316287A (en) * | 2016-08-18 | 2017-01-11 | 大连地拓重工有限公司 | Method for preparing comprehensively stabilized pavement base material with iron tailings and waste rocks |
| CN113501682A (en) * | 2021-07-09 | 2021-10-15 | 杭州市城市建设基础工程有限公司 | Construction method of large-thickness cement stabilized macadam foundation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Lim et al. | Effect of different sand grading on strength properties of cement grout | |
| CN105601199A (en) | Expansive anti-crack fiber concrete and preparation method therefor | |
| CN105236863B (en) | A kind of intumescent flowing cement base road surface grouting reinforcing material high and preparation method thereof | |
| CN104844099A (en) | Low-shrinkage, low-viscosity and ultrahigh strength concrete | |
| CN101935179A (en) | Composite mineral additive for high-strength and high-performance concrete and method for preparing concrete | |
| CN102040360B (en) | Tailing sand brick with high weather resistance and preparation method thereof | |
| CN103011659A (en) | Super retarding high-performance water reducer | |
| Elango et al. | Strength and permeability studies on PPC binder pervious concrete using palm jaggery as an admixture | |
| Aswathy et al. | Behaviour of self compacting concrete by partial replacement of fine aggregate with coal bottom ash | |
| CN109665769A (en) | A kind of super hardening high performance concrete and preparation method thereof | |
| CN105731919B (en) | A kind of superelevation concrete adulterated with fly ash | |
| CN107117914A (en) | High-strength freeze proof grouting material and preparation method thereof | |
| Sandhu et al. | Effect of River Indus Sand and Recycled Concrete Aggregates as Fine and Coarse Replacement on Properties of Concrete. | |
| Lim et al. | Strength properties of self-compacting mortar mixed with GGBFS | |
| Reddy et al. | Effect of fly ash on strength and durability parameters of concrete | |
| CN108164213A (en) | A kind of filling layer self-compacting concrete frozen for severe cold area anti-ice with dynamic load coupling | |
| CN110937868A (en) | Self-compacting hybrid fiber concrete and preparation method thereof | |
| CN102603222A (en) | Cement-stabilized macadam foundation reinforcing composite additive | |
| CN102180627B (en) | Reinforced concrete material with high corrosion resistance and preparation method thereof | |
| CN110451884A (en) | A kind of self-compaction jacking concrete and its application | |
| CN110059334A (en) | A method of concrete is prepared using coal ash instead fine aggregate | |
| KR100908675B1 (en) | Concrete composition for revealing high early strength | |
| Shi et al. | Investigation on the Properties of Concrete Containing Oil Shale Waste Ash as a Substitute for Cement | |
| Ramli et al. | Comparative study between flowable high strength mortar and flowing high strength concrete | |
| CN106082834A (en) | A kind of C60 machine-made sand concrete and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120725 |