Anti-cracking protective mortar for roof waterproof layer

A waterproof layer and mortar technology, which is applied in the field of protective mortar, can solve the problems of short service life, waterproof layer tearing, roof water seepage, etc., and achieve the effect of improving durability and service life, preventing waterproof layer tearing, and small crack width

Active Publication Date: 2013-01-30
西安五和新材料科技集团股份有限公司
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

These materials are brittle, have poor crack resistance, and are often easy to crack, causing the waterproof layer to be torn, and then the roof seeps or even leaks. It can be seen that the performance of the roof waterproof protective layer is a key to the effect of the roof waterproof layer. factor
Investigation and research shows that the service life of existing roof waterproofing is relatively short, about 10 years

Method used

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  • Anti-cracking protective mortar for roof waterproof layer

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Embodiment 1

[0015] Following the technical solution of the present invention, the components of the anti-crack protective mortar of the roof waterproof layer of this embodiment are cement, fly ash, silica fume, sand, PVA fiber, water reducing agent and water, wherein, by mass percentage, Cement: fly ash: silica fume: sand: water = 1: 0.9: 0.1: 0.76: 0.58; based on the total volume of cement, fly ash, silica fume, sand and water mixed uniformly, PVA fiber (polyethylene Alcohol fiber) volume content is 1.5%; the addition of water reducer is 0.8% of the total amount of fly ash and cement. Among them: the maximum particle size of sand is 1.26mm; the length of PVA fiber is 6-12mm, the diameter is more than 26μm, the tensile strength is more than 1200MPa, and the elastic modulus is more than 30GPa; the cement is P.O.52.5R Portland cement; The coal ash is Class I fly ash; the silica fume has an ignition loss of 5%, a silicon dioxide content of 88%, and a specific surface area of ​​18,000m 2 / kg...

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Abstract

The invention discloses anti-cracking protective mortar for a roof waterproof layer, which solves the problems that the conventional roof waterproof layer is high in brittleness, easy to crack and poor in durability. The anti-cracking protective mortar consists cement, fly ash, silica fume, sand, polyvinyl alcohol (PVA) fiber and water, wherein in percentage by mass, the ratio of the cement, the fly ash, the silica fume, the sand to the water is 1: 0.9: 0.1: 0.76: 0.58; and based on the total volume after the cement, the fly ash, the silica fume, the sand and the water is mixed uniformly, the volume of the PVA fiber is 1.5 percent. The anti-cracking protective mortar has the characteristics of high strength, high ductility, durability and good anti-cracking performance, and can effectively prevent tearing of the waterproof layer due to temperature stress, improve and ensure the waterproof performance and the anti-penetrability performance of a roof, also improve the durability of the roof waterproof layer and prolong the service life of the roof waterproof layer.

Description

technical field [0001] The invention relates to a protective mortar for a roof waterproof layer, in particular to an anti-crack protective mortar for a roof waterproof layer with high ductility mortar as a raw material. Background technique [0002] Roof waterproofing is an essential link in roof construction and an effective way to prevent roof rainwater leakage. Due to the large seasonal and diurnal temperature differences on the roof, the influence of temperature stress is significant. Traditional uninhabited roofs generally use asphalt glue to adhere a layer of coarse sand or quartz sand on the surface of the waterproof layer as a protective layer. On the waterproof layer, ordinary roofs generally pour a 30-40mm thick fine stone surface layer on the waterproof layer or lay it with cement mortar. Prefabricated blocks act as a protective layer. These materials are brittle, have poor crack resistance, and are often easy to crack, causing the waterproof layer to be torn, a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/04
Inventor 邓明科梁兴文孙宏哲秦萌
Owner 西安五和新材料科技集团股份有限公司
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