Inorganic anchoring agent / structural adhesive 1 Introduction Extension of inorganic anchoring agent is a special inorganic material made of special cement, imported from Germany, chemical additives and auxiliary materials, with fast-setting, rapid hardening, high strength, non-shrink / micro-expansion, scissors high shear strength, penetration resistance and other characteristics, and can operate cold construction and environmental pollution. Mainly used for construction and installation, railway tunnels, water conservancy and hydropower, roads, bridges and other projects in the steel anchor. When used spike anchor, the anchor spike eliminating the need to boil when sulfur heating process, avoid concrete sleepers, bridge pillow due to local heating may crack and reduce spike life. Allow construction at above ambient temperatures of -10 ℃, after 2 million times good fatigue test results. 2, performance characteristics 2.1 standard Railways TB / T2093-2002 "water suction anchor packet technology conditions." 2.2 initial setting time ≥5min, about the final setting time 20 min. 1h compressive strength ≥15MPa, 3d compressive strength ≥50MPa; 3d vertical expansion ≥0.1%. Model TD-MG1 TD-MG2 compressive strength (MPa) 30min ≥12 1d ≥40 60min ≥15 3d ≥50 28d ≥50 28d ≥75 setting time (min) ≥90 Final setting Initial setting Initial setting ≥5 ≤20 final setting ≤240 reinforced bond strength (MPa) ≥6.5 bar ≥6.5 bar steel rebar ≥13 ≥13 free expansion rate (%) 0.1 0.1 2.3 0.25 0.25 water-cement ratio recommended by engineering and technical parameters bar diameter (mm) drilling Depth (mm) hole diameter (mm) pulling force design value KN pulling force Found KN Φ6 90 Φ12 9 12 Φ8 120 Φ14 17 26 Φ10 150 Φ16 26 40 Φ12 180 Φ18 38 57 Φ14 210 Φ22 52 79 Φ16 240 Φ25 67 100 Φ18 270 Φ25 85 130 Φ20 300 Φ28 105 158 Φ22 330 Φ30 127 180 Φ25 375 Φ32 164 220 3, the application 1, suitable for railway concrete sleepers, bridge pillow spike anchor, prefabricated bridge cemented joints, machinery and equipment to anchor anchor bolt. 2, for railways, tunnels, water tunnels, coal, pier reinforcement, aseismic, metallurgy, mining and other underground engineering support bolt for quick construction of rock and concrete structure reinforcement project led nail anchor, and to meet Welded claim 4, anchor site construction process 3.1 aperture and depth of the hole should be consistent with the requirements of the table. Clean hole in the rock powder, pre-wet with water, do not stay out of water. The anchoring agent in a container, according to 20% of the amount of anchoring agent is added to clean water, stir, squeeze into the aperture, the gas discharge holes, insert steel eyelets until filled, and achieve the required depth, to ensure that the hole Extrusion dense. 3.2, when used with horizontal or vertical lifting anchor should reduce the amount of water anchoring agent, hit with a hammer into the hole can be reinforced. 3.3 from Anchorage add water until the anchor is installed, it should be completed within 20 minutes. 3.4 installation can not tap bolt or hanging weights within two hours. 3.5 Anchoring the dosage according to density calculated as 2100Kg / m3. Each spike amount of about 0.4 kg. 3.6 Bolt damp cloth covering sprinkler installation application maintenance, three days later to do pull-out test. 3.7 rock, concrete, brick and other basic strength should be greater than C20. 3.8 remaining after hardening slurry can not re-add water use, re-use and shall not be incorporated into the new Anchorage. 3.10 according to project needs, the user can adjust the recipe statement, to be met. 5, packaging, storage 1, standard Packing: 50 kg / bag, non-toxic, odorless, non-flammable, non-explosive, according to general cargo transport. 2, this product should be stored in a dry, cool place, storage period of six months. 6, the advantages and disadvantages of organic and inorganic anchoring agent, anchoring agent (please click here) advantages and disadvantages of organic and inorganic anchoring agent, anchoring agent: 1, the organic adhesive anchoring material is relatively expensive, toxic, complex construction technology, and high temperature refractory relatively poor performance, inorganic adhesive anchoring material relatively low price, simple process, high fire resistance, anti-aging, can be wet construction, and an organic binder material compared to anchor a large advantage. 2, since the elastic modulus of about concrete is 20000-40000MPa, while organic anchoring material elastic modulus is about 20000-30000MPa, both elastic modulus not in the same order of magnitude, easily lead to the anchor material is cured after deformation under stress and the with humidity changes in the environment caused by the deformation of the substrate and is anchored in a concrete material properties change accordingly inconsistent, uncoordinated. 3, anchorage anchoring structure is mainly reinforced concrete structures, due to the portland cement as the main component of cement and concrete to harden the body was highly alkaline liquid, PH value is generally above 12.5, in such a high alkalinity environment, organic type anchoring material easily alkalized brittle or bonding. 4, organic anchoring material of poor heat resistance, and bond strength steel construction influenced by the inorganic to good effect. 5, organic materials and are anchored anchoring structure interface with loads of sliding greater structural rigidity using anchor dropped, due to the material properties of inorganic material and structural properties are anchored close, slip amount is smaller. 6, anchoring organic material is expensive, narrow range of applications, easy-derived inorganic materials, low cost, widely used. 7. organic type anchoring material construction requirements, such as waterproof, anti-dust, etc., should not be controlled, and the inorganic material is not this conditions, to facilitate construction. 8, the presence of an inorganic material fixed anchor slow, low early strength, shrinkage large, anchoring strength and low and high organic material early strength anchoring, micro-expansion and strong bonding. Late considerable strength under similar conditions. Inorganic anchoring material can provide a sufficiently high liquid alkalinity, serve as adequate protection ribs performance, organic bonded anchor material sealing, water, retaining ribs better. 9, fire-resistant inorganic adhesive anchoring material, high temperature performance is better, inorganic adhesive anchoring material fixed relatively slow. 10, anchoring organic material deformation resistance is poor, and therefore less friction, in the same anchoring load displacement slightly larger than the inorganic material. 11, an organic adhesive anchoring material more toxic or slightly toxic materials, and inorganic binder material no toxic effects, than the use of the inconvenience and ventilation construction environment in more complex areas, reducing the hazards of construction workers, reducing environmental pollution.