CN103553541B - Pile bottom sediment curing agent - Google Patents
Pile bottom sediment curing agent Download PDFInfo
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- CN103553541B CN103553541B CN201310489396.6A CN201310489396A CN103553541B CN 103553541 B CN103553541 B CN 103553541B CN 201310489396 A CN201310489396 A CN 201310489396A CN 103553541 B CN103553541 B CN 103553541B
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- pile bottom
- bottom sediment
- curing agent
- solidifying agent
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The invention discloses a pile bottom sediment curing agent, and relates to a reinforcement composition for building operations. The curing agent comprises the following components in parts by weight: 100 parts of levigated slag, 10-20 parts of coal ash, 5-10 parts of levigated limestone powder, 30-60 parts of sodium silicate, 3-5 parts of sodium metasilicate pentahydrate, 1-2 parts of naphthalenesulfonate formaldehyde condensation compound, 1-2 parts of calcium lignosulphonate, and 30-40 parts of water. The setting time of the curing agent is controllable, the permeability and adsorption effect are good, and the cured body has high strength; the curing agent can be used for curing the pile bottom sediment, so that the complex deslagging reinjection grouting process after the reinforce concretion construction can be saved, the construction efficiency is greatly improved, and the construction cost is lowered.
Description
Technical field
The present invention relates to the reinforcing composition of building operation, specifically a kind of revolve dig drilled dry construction after for leaving over the solidifying agent of sediment at the bottom of reinforcing pile.
Background technology
In building operation, the throw out that mud takes away that is not recycled that rig precipitates in boring and cleanup process or collapse hole stays is pile bottom sediment, general clinker removal method is difficult to make sediment thickness meet code requirement, this can cause the depression of bearing force of stake, distortion increases, and there is serious quality and potential safety hazard.
Revolving in the process of digging drilled dry construction in prior art, removed by the sediment of scarfing cinder bucket to bottom after having holed, but generally still can leave the sediment of 20-30cm in actually operating, artificial scarfing cinder not only bothers also dangerous, along with the wearing and tearing passivation of scarfing cinder bucket, the effect of scarfing cinder also worse and worse, and also can introduce more sediment at the bottom of hole when descending reinforcing cage, and therefore common drilled dry construction is also more difficult meets related specifications requirement.At present also dryly do not turn over the solidifying agent directly pile bottom sediment is cured in journey revolving to dig.
Summary of the invention
For above shortcomings in prior art, the invention provides a kind of can effectively, the solidifying agent of pile bottom sediment that formed of rapid solidification drilling construction, this solidifying agent directly can be poured in pile bottom sediment after piercing and be cured process.
For realizing above-mentioned technical purpose, the technical solution used in the present invention is as follows:
A kind of pile bottom sediment solidifying agent, comprise the component of following weight proportion: ground slag 100 parts, 10 ~ 20 parts, flyash, levigate limestone powder 5 ~ 10 parts, water glass 30 ~ 60 parts, metasilicate pentahydrate sodium 3 ~ 5 parts, naphthalenesulfonate formaldehyde condensation compound 1 ~ 2 part, calcium lignin sulphonate 1 ~ 2 part, 30 ~ 40 parts, water.
Preferably, described ground slag meets following condition: basicity factor>=1.2, activity index>=0.30, specific surface area: 400 ~ 500m
2/ kg.
Preferably, the modulus of described water glass is 1 ~ 3.
Preferably, the specific surface area of described flyash and levigate limestone powder is all satisfied: 300 ~ 500m
2/ kg.
The present invention compared to existing technology, has following beneficial effect:
1) time of coagulation is controlled, by the ratio of each component of adjustment solidifying agent, can adjust time of coagulation within the scope of 30min ~ 5h.
2) the cured body 3h intensity that sediment is formed after solidification can reach 1 ~ 2MPa, and within 28 days, intensity can reach more than 30MPa.
3) solidifying agent class quasi-fluid provided by the invention, good penetrability, can infiltrate into rapidly in the hole of rock slag body in hole, be cured by slag body.
4) this solidifying agent and pile bottom sediment solidify the cured body formed, and its Young's modulus is close with periphery rock, can effectively by the Stress transmit of stake to ground.
5) solidifying agent can situ configuration after piercing, directly pour in pile bottom sediment and be cured process, need not remove pile bottom sediment completely, the process of slip casting is recharged in slagging-off complicated after saving reinforced concrete construction, thus substantially increases operating efficiency, reduces construction cost.
Embodiment
In order to make those skilled in the art, the present invention may be better understood, further illustrates technical solution of the present invention below in conjunction with embodiment.
A kind of pile bottom sediment solidifying agent, comprises following component: ground slag 100 parts, 10 ~ 20 parts, flyash, levigate limestone powder 5 ~ 10 parts, water glass 30 ~ 60 parts, metasilicate pentahydrate sodium 3 ~ 5 parts, naphthalenesulfonate formaldehyde condensation compound 1 ~ 2 part, calcium lignin sulphonate 1 ~ 2 part, 30 ~ 40 parts, water.Table one shows each constituent mass ratio chosen in different embodiment.
Each constituent mass number of the different embodiment of table one
Applicant points out that above-described embodiment is just for illustration of core concept of the present invention, the ratio of each component is adjusted by practical situation to control time of coagulation during embody rule, found through experiments, this time of coagulation can be controlled in 30min ~ 5h, the cured body 3h intensity formed after sediment solidification can reach 1 ~ 2MPa, and its 28 days intensity can reach more than 30MPa.
In order to improve the effect of solidifying agent further, can limit the physics and chemistry character of ground slag, the parameters such as such as basicity factor, activity index and specific surface area, wherein the basicity factor of ground slag refers to the ratio of basic oxide and acidic oxide, general by (CaO+MgO)/(SiO
2+ Al
2o
3) ratio represent.Be acid slag when basicity factor is less than 0.8, it is autolyzed slag when basicity factor is 0.8 ~ 1.2, be alkaline slag when basicity factor is greater than 1.2, the present invention is for improve solidification effect better, select the ground slag that basicity factor is greater than 1.2, such component reacts very fast, considers that the basicity of a large amount of mineral is generally no more than 2, for cost-saving, preferably select the slag of basicity factor 1.2 ~ 2.
The definition of activity index: substitute the cement of 50% with slag, mix production standard mortar specimen, then tests mortar 28 days intensity.Containing slag mortar strength with not containing slag benchmark mortar strength ratio, be exactly the activity index of slag.In cement, add slag can save cement input cost to replace part of cement, and the activity index of slag is more close to 1 (all activity indexs are all less than 1), illustrate that the activity index of slag is higher, and slag is thinner, cement later strength can be improved, therefore limit activity index >=0.30 of ground slag here simultaneously.
Specific surface area refers to the total area that unit mass material has, and it is that evaluate catalysts, sorbent material and other porous masses are as one of important indicator of asbestos, mineral wool, diatomite and clay minerals industrial utilization.For the ground slag in the present invention, its specific surface area can be defined as 400 ~ 500m
2/ kg.
In sum, for improving the solidification effect of solidifying agent of the present invention, further restriction can be carried out to the characteristic of ground slag, i.e. these ground slag demand fulfillment basicity factor>=1.2, activity index>=0.30, specific surface area: 400 ~ 500m
2/ kg.Owing to defining large specific surface area and higher activity index, configuration solidifying agent adsorptive power is out also strong.
The chemical formula of water glass is R
2onSiO
2, R in formula
2o is alkalimetal oxide, be generally sodium oxide, potassium oxide etc., silicon coefficient n is called modulus of water glass, it is the molecular ratio (or mol ratio) of silicon oxide in water glass and alkalimetal oxide, modulus of water glass is larger, water glass is more insoluble in water, when n is 1, normal-temperature water can be dissolved, n needs hot water to dissolve when strengthening, therefore in order to control the permeability effects of solidifying agent in sediment, modulus should not be too large, the present invention selects the modulus of water glass to be 1 ~ 3 better, such selection makes solidifying agent class quasi-fluid provided by the invention, good perviousness makes solidifying agent can infiltrate in the hole of rock slag body in hole rapidly, slag body is cured.
In like manner, the specific surface area of described flyash and levigate limestone powder is preferably 300 ~ 500 ㎡/kg, can improve the adsorptive power of solidifying agent equally.
Metasilicate pentahydrate sodium (Na
2siO
3.5H
2o) be the setting accelerator modulating mortar, concrete and cement, naphthalenesulfonate formaldehyde condensation compound and calcium lignin sulphonate are all water reducers, its water-reducing rate is high, not bleed, cement adaptability are good, and composite use can inhibition of slump-loss, and then improves the intensity of sediment cured body further.
Solidifying agent provided by the invention and pile bottom sediment solidify the cured body formed, its Young's modulus is close with periphery rock, can effectively by the Stress transmit of stake to ground, and after using this solidifying agent, staff need not remove pile bottom sediment completely, the process of slip casting is recharged in slagging-off complicated after eliminating reinforced concrete construction, thus substantially increases operating efficiency, reduces construction cost.
Above pile bottom sediment solidifying agent provided by the invention is described in detail.The explanation of specific embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
Claims (4)
1. a pile bottom sediment solidifying agent, it is characterized in that, comprise the component of following weight proportion: ground slag 100 parts, 10 ~ 20 parts, flyash, levigate limestone powder 5 ~ 10 parts, water glass 30 ~ 60 parts, metasilicate pentahydrate sodium 3 ~ 5 parts, naphthalenesulfonate formaldehyde condensation compound 1 ~ 2 part, calcium lignin sulphonate 1 ~ 2 part, 30 ~ 40 parts, water.
2. pile bottom sediment solidifying agent according to claim 1, is characterized in that, described ground slag meets following condition: basicity factor >=1.2, activity index >=0.30, specific surface area: 400 ~ 500 ㎡/kg.
3. pile bottom sediment solidifying agent according to claim 1, is characterized in that, the modulus of described water glass is 1 ~ 3.
4. pile bottom sediment solidifying agent according to claim 1, is characterized in that, the specific surface area of described flyash and levigate limestone powder is all satisfied: 300 ~ 500 ㎡/kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310489396.6A CN103553541B (en) | 2013-10-08 | 2013-10-08 | Pile bottom sediment curing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310489396.6A CN103553541B (en) | 2013-10-08 | 2013-10-08 | Pile bottom sediment curing agent |
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| CN103553541A CN103553541A (en) | 2014-02-05 |
| CN103553541B true CN103553541B (en) | 2015-02-25 |
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ID=50007961
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|---|---|---|---|
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271974A (en) * | 2015-09-18 | 2016-01-27 | 广西路佳道桥勘察设计有限公司 | New soil stabilizer and preparation method |
| CN105174872A (en) * | 2015-09-18 | 2015-12-23 | 广西路佳道桥勘察设计有限公司 | High-strength soil stabilizer and preparing method thereof |
| CN105906299A (en) * | 2016-04-07 | 2016-08-31 | 国网江苏省电力公司连云港供电公司 | Novel soft soil reinforcing material |
| CN106045437A (en) * | 2016-05-30 | 2016-10-26 | 刘文白 | Soft soil solidification reinforcing agent |
| CN109503050A (en) * | 2018-12-03 | 2019-03-22 | 嘉兴市康立德构件有限公司 | A kind of concrete and preparation method thereof |
| CN112225512B (en) * | 2020-09-04 | 2022-05-24 | 西安同鑫伟业环保科技有限公司 | Soil curing agent and using method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102603217B (en) * | 2011-12-02 | 2014-05-21 | 中国人民解放军63653部队 | Alkali-activated carbonate composite cementing material and preparation method thereof |
| CN103253899B (en) * | 2013-05-17 | 2014-12-10 | 连云港港口工程设计研究院有限公司 | Silt solidification method |
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| ASS | Succession or assignment of patent right |
Owner name: CHONGQING CONSTRUCTION ENGINEERING GROUP CO., LTD. Effective date: 20141224 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yang Xiang Inventor after: Jiang Zhen Inventor after: Yang Changjiang Inventor after: Weng Changyun Inventor after: Zhang Zhifei Inventor before: Yang Xiang Inventor before: Liu Pei Inventor before: Yang Changjiang Inventor before: Weng Changyun Inventor before: Zhang Zhifei |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: YANG XIANG LIU PEI YANG CHANGJIANG WENG CHANGYUN ZHANG ZHIFEI TO: YANG XIANG JIANG ZHEN YANG CHANGJIANG WENG CHANGYUN ZHANG ZHIFEI |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20141224 Address after: 400021 Chongqing City Park in Chongqing economic and Technological Development Zone C40 Building 9 floor Applicant after: Chongqing Jiangong Municipal Transportation Project Co., Ltd. Applicant after: Chongqing Construction Engineering Group Co., Ltd. Address before: 400021 Chongqing City Park in Chongqing economic and Technological Development Zone C40 Building 9 floor Applicant before: Chongqing Jiangong Municipal Transportation Project Co., Ltd. |
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