Non-shrinkage cement-based roofing material

A cement-based, non-shrinkage technology, applied in the direction of sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problems such as the uncommon application of rigid waterproof roofs, damage to the integrity of the roof, and increase the risk of leakage. Achieve excellent waterproof performance, low cost and convenient construction

Inactive Publication Date: 2009-11-18
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large thickness required, the roof load increases, and the waterproof effect is not good; in recent years, waterproof mortar has been used for roof waterproof construction; due to the poor deformation ability of these two materials, they cannot resist heat caused by temperature changes. Expansion and contraction, so the pouring area of ​​a single block is small, and many construction joints need to be set, which destroys the integrity of the roof and increases the risk of leakage
Therefore, the application of rigid waterproof roofing is not yet common

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The roofing material consists of 1 part of PII-42.5 Portland cement, 0.2 part of finely ground blast furnace slag powder, 0.12 part of expansion agent, 0.15 part of limestone powder, 0.001 part of polypropylene fiber, 0.012 part of naphthalene sulfonate water reducer, defoaming agent It consists of 0.003 parts each of agent and viscosity regulator, and 2.5 parts of sand. Add 0.3 parts of water at the construction site and mix evenly, then pave by hand or spray to form a flat roof waterproof layer with a thickness of 35 to 50 mm, and keep it moist for 5 to 7 days.

Embodiment 2

[0021] The roofing material consists of 1 part of rapid hardening sulfoaluminate cement with strength grade 52.5, 0.15 part of fly ash, 0.15 part of limestone powder, 0.025 part of alkali-resistant glass fiber, 0.012 part of naphthalene sulfonate water reducer, and 0.001 part of reinforcing agent. , 0.0015 parts of retarder, 3 parts of sand. Add 0.25 parts of water at the construction site and mix evenly, pave by hand or spray to form a flat roof waterproof layer with a thickness of 35-50 mm, and keep it moist for 5-7 days.

Embodiment 3

[0023] The roofing material consists of 1 part of CA-50 aluminate cement, 0.3 part of dihydrate gypsum, 0.15 part of metakaolin, 0.15 part of quartz powder, 0.025 part of alkali-resistant glass fiber, 0.012 part of naphthalene sulfonate superplasticizer, and retarder 0.0015 parts, defoamer and 0.003 parts, sand 3 parts. Add 0.25 parts of water at the construction site and mix evenly, pave by hand or spray to form a flat roof waterproof layer with a thickness of 35-50 mm, and keep it moist for 5-7 days.

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Abstract

The invention relates to a non-shrinkage cement-based roofing material, belonging to the technical field of building materials. The roofing material is formed by mixing cement, activated and inert mineral admixtures, plaster, expanding agents, glass fibers and organic synthesis fibers, chemical admixtures, sand and the like based on a certain proportion. At the construction field, right amount of water is added and stirred evenly, and is constructed by hand spreading or spraying. Regarding constructed roofing, the thickness of the waterproof layer is 35-50mm and the area of the separate bin is 50-300m. The non-shrinkage roofing material has high strength, good volume stability and excellent waterproof property, can be used for thin layer construction and is convenient, fast and flexible in construction. The roofing material is low in cost, convenient in production and changeable in production scale, and is applicable to the requirements of construction of villages and small towns. In addition, the roofing material utilizes a substantial proportion of industrial residues, thus not only reducing cost but also conducing to environment protection.

Description

technical field [0001] The invention relates to a rigid waterproof roof material suitable for building low-storey houses in villages and small towns, and can also be used for building roofs of ordinary residential houses in cities. Background technique [0002] The commonly used rigid waterproof roofing material is fine stone concrete. Due to the large thickness required, the roof load is increased, and the waterproof effect is not good; in recent years, waterproof mortar has been used for roof waterproof construction; due to the poor deformation ability of these two materials, they cannot resist heat caused by temperature changes. Expansion and contraction, so the pouring area of ​​a single block is small, and many construction joints need to be set, which destroys the integrity of the roof and increases the risk of leakage. Therefore, the application of rigid waterproof roofing is not yet common. [0003] Glass fiber reinforced cement-based materials (GRC) or synthetic f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/14C04B28/36C04B14/06C04B18/12
CPCC04B28/065C04B2111/34C04B2103/302C04B2111/27C04B28/06C04B28/04C04B2111/00586Y02W30/91C04B14/02C04B14/06C04B14/365C04B18/08C04B18/141C04B20/0048C04B22/008C04B32/02C04B2103/20C04B2103/50C04B2103/0079C04B24/226C04B24/2641
Inventor 阎培渝
Owner TSINGHUA UNIV
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