In the existing waterproofing and leakage-stopping construction handbook (as " construction engineering waterproof material handbook,, China Construction Industry Press in 1994), patching materials generally is that to add a certain proportion of water glass in Portland cement be that the main inorganic fast component that coagulates is formulated.These components such as fast dry essence, alum salt water-repellent, 801 plugging agents etc.These short components that coagulate will be processed separately, can use at the scene with behind the cement mix, make troubles to constructing operation.In addition, this class patching materials condenses too fast, and wayward, mix inequality often, difficult quality guarantee.The intensity of this class material is lower, and shrinkability is bigger, and weather resistance is relatively poor, thereby has influenced waterproof effect greatly.
Patching materialss such as leak stopping spirit are to be base material with the Portland cement, add that one or more are inorganic or the organic waterproof base material is formulated.This class material need not on-the-spot preparation, can use after only needing to add certain water gaging, has made things convenient for operation, but has also existed time of coagulation longer, and hour intensity is low, and shortcomings such as shrinkability are arranged.
External " when the guaranteeing " introduced is to utilize external waterproof masterbatch, and it is formulated to add white cement and quartz sand, mainly as waterproof paint, when being used for leak stopping the setting and harden time longer, intensity is lower, and cost is higher.
The objective of the invention is to utilize special cement, develop a kind of fast solidifying, hour intensity height, expansion is not shunk, cost is lower, constructing operation agent to rapidly block up leakage easily.
Agent to rapidly block up leakage of the present invention is by the aluminate cement grog, adds the short component, short hard component, expansion component of coagulating again and forms.
Aluminate cement grog of the present invention is a kind of monocalcium aluminate (CA) and two calcium aluminate (CA of containing
2) be main high aluminium cement clinker, this cement clinker is to be fired by Wingdale, alumina to form, and requires its label more than or equal to No. 525.
Short component with fixed attention of the present invention is calcium oxide (CaO), is commonly called as lime, requires CaO content>90% in the lime, and its effect is to improve basicity, promotes to condense quickening.
Short hard component of the present invention is industrial lithium carbonate (li
2CO
3), its purity>98%, its effect is to promote hardening of cement, improves early strength.
Expansion component of the present invention is made up of alunite and gypsum.Require SO in the gypsum
3>45%, crystal water<5%, Al in the alunite
2O
3>12%, SO
3>13%.Its objective is that the aquation calcium sulphoaluminate that utilizes its generation produces expansion, increase density, improve cohesiveness and waterproof weather resistance.
The proportioning of agent to rapidly block up leakage of the present invention (weight percent) is:
High aluminium cement clinker: 70~80%
Lime: 0.2~1.0%
Quilonum Retard: 0.01~0.05%
Alunite: 5~15%
Gypsum: 10~20%
With the above-mentioned raw materials combined grinding to specific surface area>400m
2/ kg promptly makes agent to rapidly block up leakage.
The technical feature of agent to rapidly block up leakage of the present invention:
Clean slurry amount of water (%) | Time of coagulation (min) | Clean slurry ultimate compression strength (MPa) | The polar expansion (%) of clean slurry |
Initial set | Final set | 15min | 30min | 1h | 1d | 28d | 4h | 1d | 7d | 28d |
30~33 | 1~3 | 3~5 | >10 | >17 | >25 | >35 | >55 | 0.05 | 0.10 | 0.12 | 0.15 |
The performance of condensing: be not less than 0.8MPa in 4 hours
Be not less than 1.5MPa in 1 day.
Impervious: clean slurry examination body water was supported 3 days, and is waterproof under 1.0MPa hydraulic pressure.
The application of agent to rapidly block up leakage of the present invention:
The present invention can be widely used in the plugging watertight of concrete structure engineering and other engineerings, between bathing as building basement, subway, people's air defense, cable trench, lavatory, pond, swimming pool etc., the quick seam that also can be used for running water pipe, gas pipe, and the rush construction of public works and repairing etc.
Using method: 1. at first leakage point or leaky seam are cut a hole into hydraucone narrow under the length and width, foreign material are cleaned out.2. one kilogram of agent to rapidly block up leakage is put into pot, put into 0.30~0.33 kg of water, mix becomes slurry rapidly.When being lower than 10 ℃, stir with 40 ℃ of water.3. the leak stopping clay of mixing is placed on hand, feels that clay scalds one's hand when hardening a little, meet the direction of leaking rapidly and depress, certain time just can be loosed one's grip.Generally in several minutes, can live water blocking.4. behind the water blockoff, in order to guarantee surfacing, wipe one's face with mortar or the conventional cement mortar of mixing U type swelling agent, surface maintenance got final product in 3 days again.5. for soakaway, can tramp with one's feet just loose pin after waiting to harden then directly in the agent to rapidly block up leakage dry powder input hole.6. for serious leaky seam, adopt drainage method, the stifled earlier seam of going up, the stifled seam down in back, stifled at last conduction hole.7. for the big area seepage, find out leakage point, block with agent to rapidly block up leakage earlier, and then mix U type swelling agent cement sand plaster.