Method for preparing insulation bonding agent for building and sintering insulation hollow building blocks
A technology of hollow blocks and binders, which is applied in the field of preparation of thermal insulation binders for masonry sintered thermal insulation hollow blocks, which can solve the problems of environmental pollution, poor thermal performance of products, and many new additions.
Inactive Publication Date: 2009-09-16
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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Problems solved by technology
The project aims at the problems of huge demand for wall materials in my country, poor thermal performance of products, high energy consumption, and serious waste of land resources. Due to the situation of large increments and environmental pollution, it is planned to use the above-mentioned industrial solid wastes to prepare new sintered insulating hollow blocks to solve the problems of building energy saving and production energy saving
Method used
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Embodiment 1
[0019] Take fly ash from a factory, pass through a 180-mesh sieve, and take the sieve material to dry. The chemical composition analysis result (wt%) of dry fly ash after drying is as follows:
[0020]
[0021] Conversion factor:
[0022] CaO→CaO: the conversion coefficient is 1;
[0023] NaOH→Na 2 O: The conversion factor is 0.775;
[0024] Weigh and dry fly ash 42.94kg (dry basis 40kg);
[0025] Add CaO to 12%, (12%-6.75%)×40kg=2.1kg
[0026] Join Na 2 O to 20%, (20%-2.03%)×40kg=7.19kg
[0027] The NaOH conversion coefficient is 0.775, that is, adding NaOH is: 7.19kg÷0.775=9.27kg
[0028] The total weight of dry base material is 40+2.1+7.19=51.39kg
[0029] Stir the raw materials evenly, add 70kg of water, put them into a high-pressure high-temperature reaction kettle, stir intermittently for 25min at a temperature of 140°C and a working pressure of 0.4MPa, keep them warm for 4 hours, and discharge them from the high-pressure high-temperature reaction kettle after...
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The invention discloses a method for preparing an insulation bonding agent for building and sintering insulation hollow building blocks. The method uses pulverized fuel ash as a main raw material, and adds CaO and Na2O as exciting agents in the pulverized fuel ash, wherein CaO is added into the pulverized fuel ash to adjust the content of CaO in the pulverized fuel ash to between 10 and 15 percent; after the mixture is stirred and mixed evenly, the mixture is arranged in a high pressure high temperature autoclave and is added with water, heated and stirred for 20 to 30 minutes under a condition that temperature is between 130 and 150 DEG C, and the working pressure is between 0.3 and 0.5 MPa and the temperature is preserved for 3 to 5 hours; after naturally cooling, the mixture is taken out from the high-pressure high-temperature autoclave; and borax with 3 to 5 percent of gross amount of a dry bas material as a water soluble slow release acid curing agent is added into the mixture and the mixture is mixed evenly so as to prepare the insulation bonding agent for sintering the insulation hollow building blocks with proportion of between 1.3 and 1.4. After seven days, the flexural bonding strength is between 4 and 7.0MPa, and the insulation performance of the insulation hollow building blocks is obviously superior to sintered insulation hollow building blocks.
Description
technical field [0001] The invention relates to a heat-preserving small mortar joint adhesive for load-bearing and sintered wall materials masonry in the construction industry, in particular to a preparation method for a heat-insulating adhesive for masonry sintered heat-insulating hollow blocks. Background technique [0002] At present, lime mortar is mostly used for masonry with large cavities and hollow bricks. The brick joints are thick and the thermal insulation is poor. Neither brick nor mortar can meet the requirements of 50% and 65% energy saving for a single building material wall. [0003] The dense small-hole sintered thermal insulation hollow block developed by the National Eleventh Five-Year Science and Technology Support Program meets the requirements of building energy-saving standards. Studies have proved that 70% of the heat loss of the "Porton" brick wall is lost through the mortar joints, so it is necessary to develop the matching thin brick joints for the...
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IPC IPC(8): C04B7/26
CPCC04B7/26Y02P40/10
Inventor 薛群虎杨源邓少霞王科颖
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY