CN104671723A - Paste injecting material of expansive soil cement paste - Google Patents
Paste injecting material of expansive soil cement paste Download PDFInfo
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- CN104671723A CN104671723A CN201410803445.3A CN201410803445A CN104671723A CN 104671723 A CN104671723 A CN 104671723A CN 201410803445 A CN201410803445 A CN 201410803445A CN 104671723 A CN104671723 A CN 104671723A
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- grout
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- swelling soil
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a paste injecting material of expansive soil cement paste. The expansive soil cement paste comprises expansive soil, cement and water, wherein the weight ratio of the expansive soil and the cement is 3:7, the pastes ratio is 1.24-1.36. Through replacing common clay by expansive soil, the expansive soil-cement paste is better than clay-cement paste in every respect, in two pastes with the same ratio, the expansive soil-cement paste can achieve a better paste injecting effect. During the paste injecting under the same base plate condition, with the pastes having the same proportion, the stone forming ratio of the expansive soil-cement paste is higher, and a better water plugging effect is achieved.
Description
Technical field
The present invention relates to a kind of mine injecting paste material, in particular a kind of injecting paste material of swelling soil grout.
Background technology
The performance of slurries is vital to Grouting engineering, so research and develop slurries that are cheap, excellent property to have good economic benefit.Cement-clay slurries, because having low, impervious strong, the calculus rate advantages of higher of cost, are widely used in the water reinforcement solved under various different hydrogeological conditions and seepage control project.Cement-clay slurries or cement grout is all have employed in floor water-bearing rock transformation.But because the proportioning of clay-grout is different, so the effect of slip casting is not identical yet.Facts have proved, in the design of Grouting engineering, the selection of slurries is important rings, and it directly affects the quality of slip casting and the cost of engineering.Because the object of slip casting is different with requirement, the slurries selected should also be different.In order to improve slip casting effect, reduce Grouting engineering cost, the physical and mechanical property for slurries carries out the experimental study of system, and it is very necessary for grasping its Changing Pattern.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of injecting paste material of swelling soil grout, replace common clay with swelling soil.
The present invention is achieved by the following technical solutions, the present invention includes swelling soil, cement and water, and the weight ratio of described swelling soil and cement is 3: 7, and slurries ratio is 1.24 ~ 1.36.
As one of optimal way of the present invention, described swelling soil crosses 200 mesh sieves, and the liquid limit of swelling soil is 36.7%, and plastic limit is 19.7%, and plasticity index is 17.0.
As one of optimal way of the present invention, the pH value of described water is 7.81, and salinity is 665.30mg/L.
As one of optimal way of the present invention, described cement is PO42.5 ordinary Portland cement.
The present invention has the following advantages compared to existing technology: the present invention adopts swelling soil to substitute common clay, and swelling soil-grout is all better than clay-grout in every respect, and two kinds of slurries of identical proportioning, swelling soil-grout can reach better slip casting effect.Slip casting under same soleplate condition, adopts the slurries of identical proportion, and the calculus rate of swelling soil-cement grout is higher, reaches better water plugging effect.
Accompanying drawing explanation
Fig. 1 is that cement-clay is starched with cement-swelling soil pulp-water admittedly than comparison diagram; ;
Fig. 2 is cement-expansion soil paste and cement-clay slurry viscosity comparison diagram;
Fig. 3 is that cement-expansion soil paste and cement-clay starch syneresis rate comparison diagram;
Fig. 4 is that cement-expansion soil paste and cement-clay are starched slurries calculus rate and contrasted (3d);
Fig. 5 is that cement-expansion soil paste and cement-clay are starched slurries calculus rate and contrasted (7d);
Fig. 6 is that cement-expansion soil paste and cement-clay are starched slurries calculus rate and contrasted (28d);
Fig. 7 is that cement-expansion soil paste and cement-clay starch slurries presetting period comparison diagram;
Fig. 8 is that cement-expansion soil paste and cement-clay starch slurries final setting time comparison diagram; .
Embodiment
Elaborate to embodiments of the invention below, the present embodiment is implemented under premised on technical solution of the present invention, give detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
Embodiment 1
The present embodiment comprises swelling soil, cement and water, and the weight ratio of described swelling soil and cement is 3: 7, and solid material is chosen to be 120g, and slurries ratio is 1.24.Swelling soil crosses 200 mesh sieves, and the liquid limit of swelling soil is 36.7%, and plastic limit is 19.7%, and plasticity index is 17.0.The pH value of water is 7.81, and salinity is 665.30mg/L.Cement is PO42.5 ordinary Portland cement.
Embodiment 2
The slurries ratio of the present embodiment is 1.26, and other embodiments are identical with embodiment 1.
Embodiment 3
The slurries ratio of the present embodiment is 1.28, and other embodiments are identical with embodiment 1.
Embodiment 4
The slurries ratio of the present embodiment is 1.30, and other embodiments are identical with embodiment 1.
Embodiment 5
The slurries ratio of the present embodiment is 1.32, and other embodiments are identical with embodiment 1.
Embodiment 6
The slurries ratio of the present embodiment is 1.34, and other embodiments are identical with embodiment 1.
Embodiment 7
The slurries ratio of the present embodiment is 1.36, and other embodiments are identical with embodiment 1.
The slurries character that test above-described embodiment obtains is as follows:
1, each proportion water consumption is configured as shown in table 1;
The each proportion water consumption of table 1 cement-expansion soil paste
| Proportion | 1.24 | 1.26 | 1.28 | 1.30 | 1.32 | 1.34 | 1.36 |
| Water consumption (g) | 260 | 239 | 218 | 200 | 187 | 176 | 166 |
2, density
Swelling soil-cement grout density is in table 2.
Table 2 cement-each weight density of expansion soil paste
| Proportion | 1.24 | 1.26 | 1.28 | 1.30 | 1.32 | 1.34 | 1.36 |
| Density/g/cm 3 | 1.25 | 1.26 | 1.27 | 1.31 | 1.33 | 1.33 | 1.37 |
3, viscosity
The viscosity of each proportion slurries of swelling soil-grout is in table 3.
The each proportion viscosity of table 3 cement-expansion soil paste
| Proportion | 1.24 | 1.26 | 1.28 | 1.30 | 1.32 | 1.34 | 1.36 |
| Viscosity/S | 18"54 | 19"75 | 21"15 | 22"26 | 23"13 | 24"01 | 24"68 |
4, syneresis rate
The syneresis rate of each proportion slurries of swelling soil-grout is in table 4.
The each proportion syneresis rate of table 4 cement-expansion soil paste
| Proportion | 1.24 | 1.26 | 1.28 | 1.30 | 1.32 | 1.34 | 1.36 |
| Syneresis rate/% | 51.2 | 47.1 | 44.6 | 37.6 | 35.4 | 34.3 | 30.5 |
5, calculus rate
The calculus rate of each proportion slurries of swelling soil-grout is in table 5.
Table 5 cement-expansion soil paste each proportion calculus rate
6, ultimate compression strength
The ultimate compression strength of each proportion slurries of swelling soil-grout is in table 6.
The each proportion ultimate compression strength of table 6 cement-expansion soil paste
7, time of coagulation
The each proportion slurries of swelling soil-grout just, final setting time is in table 7.
Table 7 cement-expansion soil paste each proportion time of coagulation
| Proportion | 1.24 | 1.26 | 1.28 | 1.30 | 1.32 | 1.34 | 1.36 |
| Presetting period/h | 77h53’ | 63h36’ | 58h43’ | 56h53’ | 54h33’ | 27h11’ | 25h57’ |
| Final setting time/h | 93h56’ | 79h38’ | 75h40’ | 73h33’ | 71h11’ | 58h53’ | 54h58’ |
Contrast by swelling soil-grout with the clay-grout character of proportioning, interpretation of result is as follows:
(1) contrast by swelling soil-grout with the water-solid ratio of the clay-grout of proportioning, result as shown in Figure 1.As can be seen from the figure: with the increase of proportion, water-solid ratio reduces, and both trend is consistent; The slurries of the identical proportion of identical proportioning, swelling soil-grout is less than the water-solid ratio of clay-grout, and namely preparation time institute's water requirement is few.This is more bigger than the proportion of swelling soil relevant with the proportion of common clay.
(2) swelling soil-grout and clay-grout viscosity contrast as shown in Figure 2.As can be seen from the figure: along with the increase of proportion, the viscosity of two kinds of slurries all has increase trend; The viscosity of identical proportion slurries, the viscosity of swelling soil-grout is bigger compared with clay-grout.
(3) swelling soil-grout and clay-Water-Seepage rate are to such as Fig. 3.Mountain is in the characteristic of swelling soil water-swelling, and the syneresis rate of swelling soil-cement grout is lower than clay-grout; The syneresis rate of two kinds of slurries maximum specific weights and minimum proportion is more or less the same, and when proportion is 1.30, the syneresis rate difference of two kinds of slurries is maximum.
(4) swelling soil-grout and clay-grout calculus rate contrast as shown in Figure 4,5, 6.Contrasted as can be seen from the calculus rate of two kinds of slurries, the calculus rate of each slurries increases with the increase of proportion; The calculus rate of two kinds of slurries is substantially close when proportion is less than 1.32, and after proportion is greater than 1.32, the calculus rate of swelling soil-grout is greater than clay-grout.
(5) swelling soil-grout and clay-grout contrast as shown in Figure 7,8 time of coagulation.As can be seen from the figure, the time of coagulation of swelling soil-grout is short compared with clay-grout.When needing slurries to condense within a short period of time in slip casting process, pressure injection swelling soil-grout can be considered.
In sum, swelling soil-grout is all better than clay-grout in every respect, and two kinds of slurries of identical proportioning, swelling soil-grout can reach better slip casting effect.Slip casting under same soleplate condition, adopts the slurries of identical proportion, and the calculus rate of swelling soil-cement grout is higher, reaches better water plugging effect.
Claims (4)
1. an injecting paste material for swelling soil grout, is characterized in that, comprises swelling soil, cement and water, and the weight ratio of described swelling soil and cement is 3: 7, and slurries ratio is 1.24 ~ 1.36.
2. the injecting paste material of a kind of swelling soil grout according to claim 1, it is characterized in that, described swelling soil crosses 200 mesh sieves, and the liquid limit of swelling soil is 36.7%, and plastic limit is 19.7%, and plasticity index is 17.0.
3. the injecting paste material of a kind of swelling soil grout according to claim 1, is characterized in that, the pH value of described water is 7.81, and salinity is 665.30mg/L.
4. the injecting paste material of a kind of swelling soil grout according to claim 1, is characterized in that, described cement is PO42.5 ordinary Portland cement.
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| CN201410803445.3A CN104671723A (en) | 2014-12-12 | 2014-12-12 | Paste injecting material of expansive soil cement paste |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060818A (en) * | 2017-01-10 | 2017-08-18 | 重庆交通建设(集团)有限责任公司 | A kind of combined type TBM synchronous grouting materials and grouting method |
| CN112065320A (en) * | 2020-09-30 | 2020-12-11 | 长江岩土工程总公司（武汉） | Method for plugging engineering drilled hole by adopting cement-soil slurry and application of cement-soil slurry |
| CN112341073A (en) * | 2020-11-12 | 2021-02-09 | 中冶成都勘察研究总院有限公司 | Cement slurry for weakening expansibility of expansive soil |
| CN114315272A (en) * | 2021-12-23 | 2022-04-12 | 中国科学院武汉岩土力学研究所 | Grouting material for expansive soil dam cracks and preparation method thereof |
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| CN104074489A (en) * | 2014-06-27 | 2014-10-01 | 陕西延长石油（集团）有限责任公司（延长油矿管理局）油气勘探公司 | Oil-gas well drainage pressurized water shutoff method |
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| CN101024963A (en) * | 2007-03-14 | 2007-08-29 | 东南大学 | Crack-seam-free seepage-proof stable sweeled ground excavation dyke slope construction method |
| US20120216720A1 (en) * | 2009-08-06 | 2012-08-30 | American Accutech Ltd. Co. | Effective Approach to Preventing and Remedying Distresses in Soils and Construction Materials |
| CN102503311A (en) * | 2011-11-08 | 2012-06-20 | 中南大学 | Cement-based waterproof and crack-resistant material suitable for foundation bed of railroad bed in expansive rock area |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107060818A (en) * | 2017-01-10 | 2017-08-18 | 重庆交通建设(集团)有限责任公司 | A kind of combined type TBM synchronous grouting materials and grouting method |
| CN112065320A (en) * | 2020-09-30 | 2020-12-11 | 长江岩土工程总公司（武汉） | Method for plugging engineering drilled hole by adopting cement-soil slurry and application of cement-soil slurry |
| CN112341073A (en) * | 2020-11-12 | 2021-02-09 | 中冶成都勘察研究总院有限公司 | Cement slurry for weakening expansibility of expansive soil |
| CN114315272A (en) * | 2021-12-23 | 2022-04-12 | 中国科学院武汉岩土力学研究所 | Grouting material for expansive soil dam cracks and preparation method thereof |
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