CN1047644C - Stabilization method for concrete structure pressed and filled by expanded agent cement paste - Google Patents
Stabilization method for concrete structure pressed and filled by expanded agent cement paste Download PDFInfo
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- CN1047644C CN1047644C CN 92110168 CN92110168A CN1047644C CN 1047644 C CN1047644 C CN 1047644C CN 92110168 CN92110168 CN 92110168 CN 92110168 A CN92110168 A CN 92110168A CN 1047644 C CN1047644 C CN 1047644C
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Abstract
The present invention relates to a strengthening method for concrete structures pressed and filled by expanding agents and cement paste. The strengthening method of the present invention is characterized in that (1) vertical holes, slant holes and horizontal holes are drilled during drilling holes; (2) during cleaning and flushing, an elbow bend bevel flushing pipe is used to pass through the vertical holes, and high-pressure water is used to jet water to the surrounding for flushing; (3) moving openings for discharging sedimentation water, checking quality and horizontal grouting are prearranged when a weir is constructed; (4) during grouting, the vertical holes (or the slant holes) are combined with the horizontal holes so as to grout a strengthening range via static pressure; (5) the opening is smoothed. The strengthening method of the present invention has the advantages of short construction period, low project cost, good engineering quality, small and flexible device, little ground occupation, etc., and is suitable for strengthening various underground concrete structures.
Description
The invention belongs to damaged basis or the reparation of foundation structure thing, the particularly reinforcing of underground concrete structure thing.
In underground concrete engineering structure generation micro-cracks and when leaking, common sealing worker method is to make a call to a through hole above the concrete wall place of leaking laterally from the inboard, pressurization is injected in the outer soil of concrete wall mixed liquor with water and cement----cement paste through through hole, cement paste is increased gradually, in cement paste, mix coagulating agent at last, form the body that thes cement solidifies in the concrete wall outside and stop water, as Japanese kokai publication sho 62-276129 patent.Because the scrambling and the disguise of the inner hole of concrete structure, this method are difficult for inner large tracts of land space and the cave reinforcing that occurs of concrete structure,
The objective of the invention is, a kind of method that adopts boring, static pressure grouting to carry out the reinforcing concrete structure is provided, the reinforcing requirement during with solution concrete structure occurrence of large-area space and hole.
The activities of stabilization method for concrete structure pressed and filled by expanded agent cement paste of the present invention is, boring, and the weir is built in the cleaning flushing, and slip casting is sealed, and it is characterized in that, during boring, to the degree of depth that needs reinforcement, is drilled with upright opening, oblique hole and lateral aperture with engineering geological drilling rig boring;
During the cleaning flushing, adopt elbow bend groove cleaning hose to place between base plate and the waterproofing course concrete cushion, with pressure 1.5～5.0MPa water under high pressure jetting flushing towards periphery reinforcing scope by upright opening;
When building the weir, build the cofferdam around the works by laying bricks or stones, reserve discharging precipitation water and check on the quality and the movable port of lateral aperture slip casting;
During slip casting, adopt upright opening or inclined hole and lateral aperture to combine, to the reinforcing scope static pressure grouting, expanded agent cement paste is made up of No. 425 cement and expansion agent, and its mixing ratio by weight is: cement 85～95%, and expansion agent 5～15%, water/binder ratio are 0.5～0.65; Or cement is slurries, form by cement, water glass, calcium chloride (or sodium sulphate), triethanolamine, its mixing ratio by weight is: cement, water glass, calcium chloride (or sodium sulphate), triethanolamine=100: 1～5: 1～4: 0.01～0.06, water/binder ratio is 0.5～0.65.Static pressure grouting pressure is 0.3～1MPa;
When sealing, the water of discharging precipitation is earlier mended slurry to the aperture, adds chemicals and mixes and stirs quick-setting early strength cement, seal floatingly, and mending and starching pressure is 1.0～3.0MPa.
Elbow bend groove cleaning hose of the present invention is the seamless steel pipe of diameter 14～22mm, and length is not less than 300mm, and there is the reducer union that connects high-pressure rubber pipe the upper end, and lower end elbow length is 30～45mm, 40～50 ° at slop shape port inclination angle.
Stabilization method for concrete structure pressed and filled by expanded agent cement paste of the present invention has the following advantages: because the static pressure grouting that has adopted upright opening, oblique hole and lateral aperture to combine can make and fill with slurries in the reinforcing scope; The employing discharging precipitates water, benefit is starched repeatedly, can make add solid to the absorption of slurries, shrink the space that causes and filled, expansion agent in the slurries can make concrete produce microdilatancy in addition, strengthen concrete density, thereby the intensity and the quality that add solid have been improved, guarantee that concrete structure joins together, form the structure of consolidated compacting, good integrity.Because the present invention compared with the prior art, basic difference is the static pressure grouting technology that has adopted upright opening, oblique hole and lateral aperture to combine, having adopted expanded agent cement paste or cement is slurries, therefore has short construction period, and construction costs is low, good engineering quality, equipment is little, and occupied ground is few and flexible, and the operation vibration is little, noiselessness, advantage such as pollution-free.Be applicable to the reinforcing of various underground concrete structures.
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the artwork of stabilization method for concrete structure pressed and filled by expanded agent cement paste.
Fig. 1 (1) is step 1 a boring schematic diagram.
Fig. 1 (2) is step 2 a cleaning schematic diagram.
Fig. 1 (3) is that step 3 is built the cofferdam schematic diagram by laying bricks or stones.
Fig. 1 (4) is step 4 a slip casting schematic diagram.
Fig. 1 (5) is that step 5 is sealed schematic diagram.
Fig. 2 is the constructional drawing of elbow bend groove cleaning hose.
Embodiment: the base plate of a reinforced concrete frame structure box foundation and bed course break away from, and the about 100mm in cavity, gap adopts stabilization method for concrete structure pressed and filled by expanded agent cement paste of the present invention, and upright opening is bored in (1) appropriate location on base plate, and periphery is established lateral aperture; (2) cleaning, and adopt elbow bend groove cleaning hose and plastic pipe to inject water under high pressure and wash disengaging face; (3), reserve discharging precipitation water and check on the quality and the movable port of lateral aperture slip casting with the brick cofferdam of building; (4) be slurries from lateral aperture and upright opening static pressure injection cement, slurries cooperate weight ratio to be: cement, water glass, calcium chloride, triethanolamine=100: 3: 3: 0.05, and water/binder ratio is 0.60.Static pressure grouting pressure is 0.3～1.5MPa; (5) seal, the water of discharging precipitation is earlier mended slurry to the aperture, and adding water glass and cement, to mix and stir sealing floating, and through the 7 day length of time, recording test block compressive strength was 26.4MPa.
Claims (4)
1, a kind of stabilization method for concrete structure pressed and filled by expanded agent cement paste, its activities is: boring, the weir is built in the cleaning flushing, and slip casting is sealed, and it is characterized in that, during boring, is drilled with upright opening, oblique hole and lateral aperture; During the cleaning flushing, adopt elbow bend groove cleaning hose to place between base plate and the waterproofing course concrete cushion, with the jetting flushing towards periphery of pressure 1.5～5.0MPa water under high pressure by upright opening; Around works, build the cofferdam by laying bricks or stones, reserve the movable port of draining and inspection and horizontal grouting; During slip casting, adopt upright opening or inclined hole and lateral aperture to combine, to the reinforcing scope static pressure grouting, expanded agent cement paste is made up of No. 425 cement and expansion agent, and its mixing ratio by weight is: cement 85～95%, and expansion agent 5～15%, water/binder ratio are 0.5～0.65; Static pressure grouting pressure is 0.3～1.5MPa;
When sealing, the water of discharging precipitation is earlier mended slurry to the aperture, adds chemicals and mixes and stirs quick-setting early strength cement, seal floatingly, and mending and starching pressure is 1.0～3.0MPa.
2, stabilization method for concrete structure pressed and filled by expanded agent cement paste as claimed in claim 1, it is characterized in that, elbow bend groove cleaning hose is the seamless steel pipe of diameter 14～22mm, length is 800mm, there is the reducer union that connects high-pressure water pipe the upper end, lower end elbow length is 30～46mm, and the slop shape port inclination angle is 40～50 °.
3, stabilization method for concrete structure pressed and filled by expanded agent cement paste as claimed in claim 1, it is characterized in that, cement is that slurries are made up of cement, water glass, calcium chloride, triethanolamine, its mixing ratio by weight is: cement: water glass: calcium chloride: triethanolamine=1 00: 1～4: 1～4: 0.01～0.06, and water/binder ratio is 0.5～0.65.
4, as claim 1,3 described stabilization method for concrete structure pressed and filled by expanded agent cement paste, it is characterized in that, cement is that slurries are made up of cement, water glass, sodium sulphate, triethanolamine, its mixing ratio by weight is: cement: water glass: sodium sulphate: triethanolamine=100: 1～5: 1～4: 0.01～0.0 6, water/binder ratio are 0.5～0.65.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92110168 CN1047644C (en) | 1992-09-03 | 1992-09-03 | Stabilization method for concrete structure pressed and filled by expanded agent cement paste |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 92110168 CN1047644C (en) | 1992-09-03 | 1992-09-03 | Stabilization method for concrete structure pressed and filled by expanded agent cement paste |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1069093A CN1069093A (en) | 1993-02-17 |
| CN1047644C true CN1047644C (en) | 1999-12-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 92110168 Expired - Fee Related CN1047644C (en) | 1992-09-03 | 1992-09-03 | Stabilization method for concrete structure pressed and filled by expanded agent cement paste |
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| Country | Link |
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| CN (1) | CN1047644C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114615A (en) * | 2013-02-06 | 2013-05-22 | 北京现代金宇工程建设有限公司 | Reinforcement method of cement constructional element under underground water level by using permeating sipping poly-coagulation cementation body |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103193454A (en) * | 2013-02-04 | 2013-07-10 | 陕西煤业化工建设（集团）有限公司 | Grouting material applicable to reinforcement of sand layer and grouting method |
| CN103741730A (en) * | 2014-01-13 | 2014-04-23 | 龚金京 | Method for reinforcing cement components above underground water level by using permeated, dipped and condensed bonding body |
| CN103866804B (en) * | 2014-03-17 | 2016-08-24 | 北京顺鑫天宇建设工程有限公司 | Cement components is combined the infiltration dipping concrement strenthening member formed under original place |
| CN108560611B (en) * | 2018-01-19 | 2020-07-14 | 江苏沪武建设集团有限公司 | Anchoring structure for basement after inclined floating, resetting and leveling and construction method |
| CN111809606A (en) * | 2020-07-21 | 2020-10-23 | 四川童燊防水工程有限公司 | Basement exterior wall leaking stoppage grouting and reinforcing construction method |
| CN111809670A (en) * | 2020-07-21 | 2020-10-23 | 四川童燊防水工程有限公司 | Leaking stoppage grouting and reinforcing construction method for basement exterior wall construction joint |
-
1992
- 1992-09-03 CN CN 92110168 patent/CN1047644C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114615A (en) * | 2013-02-06 | 2013-05-22 | 北京现代金宇工程建设有限公司 | Reinforcement method of cement constructional element under underground water level by using permeating sipping poly-coagulation cementation body |
| CN103114615B (en) * | 2013-02-06 | 2014-10-01 | 北京现代金宇岩土工程有限公司 | Reinforcement method of cement constructional element under underground water level by using permeating sipping poly-coagulation cementation body |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1069093A (en) | 1993-02-17 |
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| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |