Non-cement-based inorganic anchoring bonded bar adhesive and preparation method thereof
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A reinforced rubber, non-cement technology, applied in the field of anchoring materials, can solve the problems of poor moisture and heat resistance, easy to become brittle, easy to change, etc., and achieve the effect of excellent working performance
Active Publication Date: 2012-03-21
GUANGZHOU INSTITUTE OF BUILDING SCIENCE CO LTD
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Problems solved by technology
[0004] (1) The elastic modulus of concrete is too different, poor heat and humidity resistance, easy aging, toxicity, high price and other physical and chemical defects;
[0005] (2) The construction conditions are strict and cannot be constructed at too low or too high temperature
It is not easy to solidify at low temperature; it is easy to denature at high temperature, and it is difficult to realize the welding process after planting at the construction site, which increases the difficulty of construction, etc.
[0006] (3) The operating temperature range is narrow, and it cannot be constructed and used at too low or too high temperature
If it is used at low temperature (0°C and below), it is easy to become brittle; if it is used at high temperature (100°C and above) for a long time, it is easy to denature and the mechanical properties will decrease;
[0007] As a result, inorganic type anchoring and planting glue came into being. At present, most of the inorganic type planting glue on the market is cement-based inorganic planting glue. High temperature, no aging, and similar elastic modulus to concrete, etc., but at the same time, there are many obvious defects that hinder the development and engineering application of inorganic planting reinforcement. For example, it takes a long time for inorganic planting reinforcement to reach a certain strength. time; the overall strength of the inorganic-type planting bar glue is not high, and the bond strength between the adhesive bonded steel bar and the substrate concrete under the condition of constrained drawing cannot reach the planting bar specified in GB50367-2006 "Code for Design of Reinforcement of Concrete Structures". The performance requirements of the glue; to achieve the bearing capacity that meets the design requirements, the depth of the cement-based rebar-planting glue should be as large as about 15d, which is basically not applicable when it encounters a concrete wall or concrete slab structure
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Embodiment 1
[0026] Mix 10 parts of metakaolin, 3 parts of slag powder, 5 parts of fly ash, 15 parts of heavy calcium carbonate, 50 parts of quartz sand, and 2 parts of expansion agent in a mixer for 15 minutes, and pack them for use; 60 parts of sodium silicate solution , 2 parts of industrial caustic soda, 20 parts of water, 1 part of high-efficiency superplasticizer, mix well and let stand until the emulsion is clear, pack for use; add the packaged emulsion to the powder, stir with a hand-held mixer for 5 minutes, until the glue is planted The powder and emulsion are evenly mixed to form a fluid viscous slurry, which can be used for construction.
Embodiment 2
[0028] 20 parts of metakaolin, 8 parts of slag powder, 5 parts of heavy calcium carbonate, 80 parts of quartz sand, and 1 part of expansion agent were mixed in a mixer for 30 minutes, and packed for use; 60 parts of industrial sodium silicate, 10 parts of industrial caustic soda, Mix 10 parts of water evenly and let it stand until the emulsion is clear, pack it for use; add the packaged emulsion to the powder, and stir with a hand-held mixer for 5 minutes until the planting rubber powder and emulsion are evenly mixed to form a fluid viscous slurry The body can be constructed.
Embodiment 3
[0030] Mix 15 parts of metakaolin, 3 parts of slag fine powder, 2 parts of fly ash, 10 parts of heavy calcium carbonate, and 70 parts of quartz sand in a mixer for 30 minutes, and pack them for use; mix 40 parts of sodium silicate solution, 8 parts of phosphoric acid Sodium solution, 8 parts of industrial caustic soda, 11 parts of water, and 1 part of admixture (superplasticizer) are mixed evenly and packaged for use; add the packaged emulsion to the powder, and stir for 5 minutes with a hand-held mixer until the glue is planted Mix the powder and emulsion evenly to form a fluid viscous slurry.
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Abstract
The invention discloses a non-cement-based inorganic anchoring bonded bar adhesive and a preparation method thereof. The preparation method of the non-cement-based inorganic anchoring bonded bar adhesive disclosed by the invention comprises the following steps of: uniformly mixing one or several kinds of powder of slag powder, metakaolin powder, coal ash, coarse calcium powder, quartz sand, a swelling agent and the like; mixing a sodium silicate solution, a sodium phosphate solution, a sodium hydroxide solution, water and the like into emulsion; and weighing threes parts of bonded bar adhesive powder and one part of the emulsion in terms of weight part, and uniformly mixing to prepare the non-cement-based inorganic anchoring bonded bar adhesive. The non-cement-based inorganic anchoring bonded bar adhesive disclosed by the invention has the advantages of early strength, high strength, stable volume, good durability, high-temperature resistance, large bond stress to reinforcing steel bars, high anchoring strength, seismic resistance, impact resistance and favorable fatigue resistance, and can be widely applied to surrounding rock anchoring for engineering, equipment foundation bar bonding, building structure bar bonding, reinforcing steel bar anchoring for water conservancy, hydropower, roads, bridges, tunnels and other projects, and the like.
Description
technical field [0001] The invention relates to an anchoring material for construction, in particular to a non-cement based inorganic anchoring glue and a preparation method thereof. Background technique [0002] Anchor planting glue belongs to building structure glue, and anchoring planting glue can be divided into organic type planting glue and inorganic type planting glue in terms of material composition. At present, the commonly used planting glue on the market is organic planting glue. [0003] At present, there are two types of organic type planting adhesives commonly used, one is epoxy resin type planting adhesive represented by JGN building structural adhesive, and the other is polyurethane represented by Hilti series structural adhesive High performance resin glue. Organic planting glue has its remarkable advantages, such as high early strength and mature development, etc., but organic planting glue also has its shortcomings that are difficult to overcome, such as...
Claims
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/34
Inventor 徐海军钟开红王果
Owner GUANGZHOU INSTITUTE OF BUILDING SCIENCE CO LTD
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