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Large-mixed flyash waterproof and heat-insulating material and construction method thereof

A technology of thermal insulation material and fly ash, applied in chemical instruments and methods, other chemical processes, etc., can solve the problems of many processes, poor material complementarity, and high engineering cost.

Inactive Publication Date: 2003-11-12
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The continuous emergence of new roof waterproof and thermal insulation materials has indeed improved the waterproof life of the roof and reduced energy consumption, but its fatal weakness has gradually been recognized by people: ①Material complementarity is poor, and the loss of control of waterproof materials often leads to the failure of thermal insulation materials; ② There are many processes, which inevitably increases the probability of leakage; ③ The cost of high-level waterproof projects is expensive, while the quality of low-level waterproof projects cannot be guaranteed

Method used

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  • Large-mixed flyash waterproof and heat-insulating material and construction method thereof
  • Large-mixed flyash waterproof and heat-insulating material and construction method thereof

Examples

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Effect test

Embodiment 1

[0030] Example 1: 30m2 small-scale project overall pouring. No cracking or leakage after multiple continuous rainy days for more than 1 week. Construction thickness: heat insulation and waterproof main layer 8cm, mortar protection layer 2cm. Measured at 2 o'clock in the afternoon on a sunny day, the outdoor air temperature is 36°C, the top surface temperature is 72°C, the indoor temperature (air conditioner) is 26°C, and the bottom surface temperature of the roof panel is 28°C. Before the transformation, T-shaped cement boards were used for heat insulation, and two felts and three oils were used for waterproofing. After the renovation, the same air conditioner is used to maintain the indoor temperature at 26°C, which saves 1.2kW·h of electricity per hour compared with that before the renovation.

Embodiment 2

[0031]Example 2: Brick paving, old house surface repair project, with complex roof structure, roof attached exhaust fan, original chimney, etc. After using 1:4 cement mortar for slope finding, three layers of ARPE flexible water prevention materials were laid. The joints of ARPE materials and special parts of the roof were waterproofed with neoprene latex water-soluble bitumen waterproof coating and high-performance adhesives. On the waterproof layer, large-volume fly ash waterproof and heat-insulating material blocks are used for roofing construction, and the expansion mortar prepared by self-developed AN micro-expansion agent is used between the blocks to fill the joints. When the temperature reaches 65°C, there is no significant difference between the indoor air temperature and the outdoor shade (30°C-32°C), so it can be seen that the waterproof and heat-insulating effect of this material is excellent.

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Abstract

The present invention relates to a flyash water-proof heat-insulating material, which characterized by that it is made up by using flyash and waste old foamed plastics as main raw material, and its composition comprises (wt%) 60%-70% of flyash, 2%-5% of foamed plastics, in which the coarse aggregate (1mm-2mm) is 65%-75% and the fine aggregate (0.5mm-1mm) is 15%-30%, AN microexpanding agent addition quantity is 0.5%-1%, water-reducing agent is 0.5-1%, water repellent is 0.5%-1% and cement addition quantity is 15-30%. Under the flyash water-proof heat-insulating material with large addition quantity of flyash are laid three-layers of high-quality ageing-resisting plastic film (ARPE) as flexible pre-water-proofing layer, so that it not only has the water-proofing function, but also can resist the irradiation of 100% UV ray.

Description

Technical field: [0001] The invention belongs to the field of building materials, in particular to a fly ash waterproof and heat insulating material. Background technique: [0002] Waterproofing and thermal insulation are two important functions of building roofs. At present, building roof waterproof materials at home and abroad mainly include asphalt and polymer waterproof membranes, waterproof coatings, building sealant and metal roof panel waterproofing. Building roof insulation and energy-saving materials basically include the following categories: expanded perlite, Air-entrained concrete, cement polystyrene board, extruded polystyrene and polyurethane foam materials, etc. [0003] The continuous emergence of new roof waterproof and thermal insulation materials has indeed improved the waterproof life of the roof and reduced energy consumption, but its fatal weakness has gradually been recognized by people: ①Material complementarity is poor, and the loss of control of wa...

Claims

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Application Information

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IPC IPC(8): C09K3/18C09K21/02
Inventor 牛福生万林海倪文
Owner UNIV OF SCI & TECH BEIJING
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