Haikou concrete plugging Welcome

 Haikou concrete plugging Welcome Welcome to the tripod Longtime plugging! The company dedicated to provide you with the best quality service! National toll-free 24-hour hotline: 400-0515-688 business service hotline: 15380582888 The company has offices in the country:... Eastern Region Northern Region Southern Region Central District, Northwest meet your company's needs, you can receive a call the day of arrival site, to provide satisfactory construction program and product pricing. Willing to cooperate with your company happy, mutually beneficial and win-win. A construction plan, prepared on the basis of 1: site conditions and material properties, scope of application. 2: "building waterproof engineering point of order" DBJ15-19-97 3: "building construction and acceptance of" 4: "underground waterproof engineering technical specifications" GB50108-2001 5: "underground waterproof engineering Quality Acceptance" GB50208-2002 6 : ******** structural design drawings 7: design requirements and the relevant provisions of two Project Overview ******** ******** is one, in the same platform transfer Line stations, including the main structure of the station and five entrances, station total length of 161.75m, the standard segment of the total width of the station 36.6m. Wulin Square underground station at the southern end of the commercial development of structures affected by the underground storey development, line depth is large, the station floor depth of about 26.4m. Standard segment of three underground stations across five island platform structure, the effective width of the largest platform for 29.3m, overburden roof approximately 4.0m. Four five underground stations across both ends of the structure, roof casing approximately 1.5m. 1200mm thick envelope station using underground continuous wall, standard wall segments and end well deep 45.5m, standard segment, end fittings are made of cross-well plate joints, brushing crystalline waterproofing cement walls and lining the wall between successive underground walls lined with concrete walls and intensity level are C30, impermeability grade P10. In addition to the station roof has several leaks focus, the rest mainly sidewall construction joints, cracks and vertical sidewall leakage caused by surface Honeycomb. Third, the leakage cause analysis according to the status of water leakage into the following four cases for analysis. 1, Pock formation Honeycomb cellular leaking concrete directly related. The main reason is leakage or vibration during the construction period and occurred less vibration, this Honeycomb in a concrete structure, some independent existence, while others were coherent. Therefore, in the event of seepage, leakage performance when seepage into pieces, drain or into shares of leakage phenomenon. 2, when the old and new concrete joints (construction joints) water leakage in the original concrete structure continues to pour concrete, the original surface of the concrete foundation no cutting hair treatment or after cutting hair is not clean or not rinse, poured concrete mixture on the original concrete foundation. This will result in the formation between the old and new concrete joints together seepage, leakage gap. 3, since the stress cracks in the concrete water leakage of concrete since the stress cracks in the concrete wall is often easy to produce, it is usually in the form of up and down through the cracks in the concrete walls of the entire exhibit regularity cracks, general In a 3 ~ 5m. This kind of self-stress concrete cracks are caused due to the heat of hydration of cement concrete reaches a certain extent, the expansion stress of concrete began to disappear at a time when the concrete began to produce contraction. This shrinkage is uniform shrinkage, so in such conditions, cracks concrete wall exhibits regularity of cracks. 4. Deformation of concrete water leakage in the construction process water stop not securely installed, resulting in a shift when tamping water stop. Another is near the concrete drain water stop ramming or tamping not dense, causing leaks exist on both sides of the concrete Deformation holes. Fourth, plugging measures based on the situation analysis of the causes of water leakage, the above four cases are now single SL-999 high pressure liquid plugging perfusion machine Sl-668 single-component PU foam injection sealing structure, the its reinforcing structure, in order to achieve the stanch effect. Fifth, the main construction material and highly performance 1, Sl-668 single-component PU foam sealing agent performance parameters indicators are as follows: Performance Project Specifications a specific gravity (25 ℃) ≥1.10 g / cm3 2 Viscosity (25 ℃, mpas ) 10003 shrinkable hardened foam does not shrink 4 Density (g / cm3 25 ℃) 0.15-0.26 5 10 to 25 times expansion ratio of 6% hardening time, mixed with 80% water, within 60 seconds 7 seconds reinforced corrosive chloride ion undetected 8 operating temperature (25 ℃) -5 ℃ -40 ℃ 2, SL-999 high-pressure perfusion plugging machine performance parameters SL-999 high-pressure perfusion plugging Weight: 7㎏ starting pressure again: <8,000psi / cm 2 The maximum output pressure: 15,000psi / cm 2 pressure pipe safe range: <13,500psi / cm 2 off valve safety range: <10,000psi / cm 2 main structure plugging construction Option 3, sealing the needle perfusion single-needle machine with high pressure fixed on drilling at ease into the foam material sealing agent six, construction method (a), filling stage of the process (b), the specific construction method 2, since leakage of water stress crack structure (1), the lowest in the cracks at 5 cm - 10 cm left or right tilt at half the thickness of the deep drilling to the structure, progressive uphill from the lower 20 cm - 30 cm distance between holes is appropriate, drilling to the highest point is once again buried seal needle, due to the general structure of the genus irregular cracks, so pay special attention shall be cross rupture surface drilling, injection will be effective. (2), after the completion of the high-pressure perfusion, you can remove the sealing needle, and then fill the hole with sealing compound.