CN1033206A

CN1033206A - Construction technology of preventing and controlling seepage in buildings

Info

Publication number: CN1033206A
Application number: CN 88108126
Authority: CN
Inventors: 刘忠义
Original assignee: SHANHAIGUAN BRIDGE PLANT MINISTRY OF RAILWAYS
Current assignee: SHANHAIGUAN BRIDGE PLANT MINISTRY OF RAILWAYS
Priority date: 1988-12-05
Filing date: 1988-12-05
Publication date: 1989-05-31
Also published as: CN1017366B

Abstract

A kind of construction technology of preventing and controlling seepage in buildings by effectively selecting several water-proof building materials for use, is adjusted proportioning and is changed construction technology, makes it have the excellent waterproof sealing performance, and feasible job practices is provided, thereby reach the regulation to the percolating water position.Be applicable to buildings in general, the seepage of point, line, surface.The deformation joint (settlement joint, shrinkage joint), constuction joint and the various pipeline that are specially adapted to underground building, civil air defense constructions and installations, railway underground road, railway tunnel, hydraulic engineering pass through the position of underground structure.

Description

Construction technology of preventing and controlling seepage in buildings

The invention belongs to the service technique of existing building thing, be specially adapted to underground structure deformation joint seepage water regulation.

The underground building is given when design and construction and is stayed some slits, and owing to concrete structure is subjected to some factor affecting generation sedimentation, the flexible crack that produces, the infiltration phenomenon usually occurs.It is stifled that prior art generally adopts cement to mix accelerating admixture, embeds the method leak stopping of ointment joint seal again, its weak effect.Reason is big, the easily generation be full of cracks of cement shrinkage of mixing accelerating admixture, and the multilayer pitch class that embeds owing to contain solvent, along with the volatilization hardening gradually of solvent, has reduced strain capacity, and continues the generation infiltration.Disclose a kind of loss circulation material and method in CN-GK87100498A, it utilizes ferric trichloride and frerrous chloride, with the ferric hydroxide colloid that is insoluble in water that forms behind the cement aquation.It is a kind of colloidal suspension particle, is filled in cement mortar or pore fluid of concrete, has improved the density of structure, has strengthened anti-permeability performance.In concrete structure or plastering waterproof layer, mix the iron chloride waterproof agent, its objective is and improve the structurally waterproof performance, but, spread or the stifled cement mortar that goes up, easily washed away loss, do not reach the purpose of water blockoff by infiltration at the percolating water position.

The objective of the invention is to propose a kind of novel preventing and controlling seepage technology, it has special construction technology and special third and coagulates the airtight slip casting zone that cement grout and tar polyurethane coating form, and can prevent seepage effectively, and job practices is simple.

Invention is achieved in that a kind of construction technology of preventing and controlling seepage in buildings; coagulate cement grout by third; airtight and watertight padding; tar polyurethane coating; the plugging watertight layer that cement mortar protective course is formed; wherein third coagulates cement grout and forms an airtight slip casting zone by the Grouting Pipe perfusion; Grouting Pipe is made up of the foaming flexible pipe; Grouting Pipe is imbedded in the groove; interval according to 0.3～1.0 meter is buried underground; dark 10～12 centimetres of groove; its airtight and watertight padding that is embedded in is expanded rubber or polyvinyl chloride band shape adhesive tape; third coagulates cement grout by first; two kinds of liquid of second are according to the constant weight percentage mix; first liquid contains acrylamide 7～16%; methylene-bisacrylamide 0.4-0.8%; triethanolamine 0.5-1%; water accounts for 24-35%, cement 5～10%, and second liquid contains Ammonium Persulfate 98.5 0.5-1%; water accounts for 40-45%; cement accounts for 5-10%, and tar polyurethane is by third; two kinds of liquid of fourth are formed, and third liquid contains polyethers resin 18～30%; toluene di-isocyanate(TDI) 2-10%; dibutyl phthalate accounts for 0.5-3%, and fourth liquid contains coal tar 60～75%, curing compound 1.5-4.5%.

Fig. 1: grouting remediation crack construction process schematic representation

Fig. 2: vertical fracture regulation schematic diagram

Now further narrate the present invention in conjunction with the accompanying drawings

Referring to Fig. 1: 1 place is with in the infiltration in the needs regulation, puts into Grouting Pipe 2, according to the physical dimension of groove, embed encapsulant 3, from up to down carry out, be coated with two-layer tar polyurethane coating then, thick 0.7～the 1.0mm of subbing, total paint thickness are 1.7～2mm.

Referring to Fig. 2: the vertical or annulus 1 of structure, to inject third in the Grouting Pipe 2 and coagulate cement mortar, expanded rubber or polyvinyl chloride band shape adhesive tape, tar polyurethane coating 4, cement mortar protective course 5 are adopted in airtight and watertight padding 3.

This construction technology can adopt corresponding structure pattern and regulation method according to different deformation behaviours and water percolating capacity, adopts third to coagulate the multi-level waterproofing materialss of formation such as cement mortar, tar polyurethane.Has easy construction, simple to operate, strong, characteristics such as good water-proof effect to distortion compliance.

Now further narrate construction sequence of the present invention in conjunction with the embodiments and use material:

1, with dark 10-12 centimetre of percolating water position groove, clear up smooth;

2, utilize the quick hardening cement flexible pipe that will foam to imbed in the groove, every about one meter, bury two of Grouting Pipe (annotate, row with) underground, form a slip casting zone, bury underground in proper order and carry out from top to bottom;

3, annotate third and coagulate that cement grout is top-down to carry out, after slurries solidify, be folded down Grouting Pipe, fill and lead up with the quick hardening cement sealing of hole;

4, press physical dimension embedding expanded rubber or polyvinyl chloride adhesive tape in the groove;

5, be coated with the secondary tar polyurethane in its surface, gross thickness is the 1.7-2.0 millimeter, and width is greater than groove width 12-15 centimetre;

6, behind second time coating tar polyurethane, sprinkle dry sand, after 24 hours, smear cement Ao ; げ

Cement grout composition such as table 1 are coagulated in third of employing:

Classification	The raw material title	Weight %
			First liquid	Acrylamide	7.78～15.54
Methylene-bisacrylamide	0.40～0.81
		Triethanolamine		0.98
Water	24.6～32.8
		Cement		8.2
Second liquid	Ammonium Persulfate 98.5				0.81
		Water	40.9
	Cement			8.2

The tar polyurethane coating composition such as the table 2 that adopt:

Classification	The raw material title	Weight %
			Third liquid	Polyether resin	22.98
Toluene di-isocyanate(TDI)	4.59～6.52
		Dibutyl phthalate (DBP)		1.14～2.17
Fourth liquid	Coal tar				68.96
		Curing compound	2.29～4.34

Claims

1, a kind of construction technology of preventing and controlling seepage in buildings; it is characterized in that: coagulate the plugging watertight layer that cement grout, airtight and watertight padding 3, tar polyurethane coating 4, cement mortar protective course 5 are formed by third, wherein third coagulates cement grout and is poured into by Grouting Pipe 2 and form an airtight slip casting zone.

2, according to the described construction technology of preventing and controlling seepage in buildings of claim 1, it is characterized in that: Grouting Pipe 2 is made up of the foaming flexible pipe, and Grouting Pipe 2 is imbedded in the groove, buries underground according to 0.3～1.0 meter interval;

3, according to claim 1 or 2 described construction technology of preventing and controlling seepage in buildings, it is characterized in that: the dark 10-12 of groove centimetre, its airtight and watertight padding that is embedded in 3 is expanded rubber or polyvinyl chloride band shape adhesive tape;

4, according to the described construction technology of preventing and controlling seepage in buildings of claim 1, it is characterized in that: third coagulate cement grout by two kinds of liquid of first, second according to the constant weight percentage mix, first liquid contains acrylamide 7～16%, methylene-bisacrylamide 0.4-0.8%, triethanolamine 0.5-1%, water accounts for 24～35%, and cement accounts for 5～10%; Second liquid contains Ammonium Persulfate 98.5 0.5-1%, and water accounts for 40～45%, and cement accounts for 5～10%;

5, according to the described construction technology of preventing and controlling seepage in buildings of claim 1, it is characterized in that: tar polyurethane by third, two kinds of liquid of fourth form, third liquid contains polyethers resin 18-30 toluene di-isocyanate(TDI) 2～10%, dibutyl phthalate accounts for 0.5-3%, fourth liquid contains coal tar 60～75%, curing compound 1.5-4.5%.