Method for cutting foaming cement board by means of wet process

A technology of foamed cement board and cutting method, which is applied in the field of foamed cement board, can solve the problems of large size deviation, short curing time, cracks, etc., and achieve the effects of improving product quality, increasing cutting efficiency, and reducing dust volume

Active Publication Date: 2012-10-24
JIANGSU NIGAO SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem mainly solved by the present invention is to provide a kind of short maintenance time before cutting, which can solve the cracks caused by the large amount of hydration heat generated in the foaming process of the foamed cement board, which is not easy to be released in time, and the foamed cement board when the strength is relatively low. A wet cutting method that is prone to problems such as large dimensional deviations when cutting at high temperatures

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  • Method for cutting foaming cement board by means of wet process

Examples

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Effect test

specific Embodiment 1

[0029] (1) Weighing 90 parts of special cement, 5 parts of fly ash and 0.3 part of reinforcing fiber, put into a mixer and mix;

[0030] (2) Put the above mixed masterbatch into water at a temperature of 35°C, add 15 parts of Portland cement, 0.2 parts of early strength naphthalene-based water reducer and 5 parts of hydride, and stir in a mixer. The speed is 160 rpm;

[0031] (3) Pour the above-mentioned uniformly stirred slurry into a foaming mould, and stop for maintenance to obtain a foamed cement board;

[0032] (4) Removing the formwork after curing the above-mentioned foamed cement board for 20 minutes, and then cutting it into foamed cement boards of required specifications through a cutting device;

[0033] (5) Surface treatment, packaging, film covering and curing of the cut foamed cement board will be completed after 14 days.

specific Embodiment 2

[0034] (1) Weigh 95 parts of special cement, 6 parts of fly ash and 0.5 parts of reinforcing fiber, and put them into the mixer for mixing;

[0035] (2) Put the above mixed masterbatch into water, the water temperature is 36°C, add 20 parts of Portland cement, 0.15 parts of early-strength naphthalene-based superplasticizer and 6 parts of aluminum powder, and stir in the mixer. The speed is 180 rpm;

[0036] (3) Pour the above-mentioned uniformly stirred slurry into a foaming mould, and stop for maintenance to obtain a foamed cement board;

[0037] (4) Removing the formwork after curing the foamed cement board for 25 minutes, and then cutting it into foamed cement boards of required specifications by a cutting device;

[0038] (5) Surface treatment, packaging, film covering and curing of the cut foamed cement board will be completed after 14 days.

specific Embodiment 3

[0039] (1) Weigh 100 parts by weight of special cement, 10 parts of fly ash and 1 part of reinforcing fiber, and put them into a mixer to mix;

[0040] (2) Put the above mixed masterbatch into water, the water temperature is 40°C, add 30 parts of Portland cement, 0.5 parts of early-strength melamine superplasticizer and 8 parts of aluminum powder, and stir in the mixer. The speed is 250 rpm;

[0041] (3) Pour the above-mentioned uniformly stirred slurry into a foaming mould, and stop for maintenance to obtain a foamed cement board;

[0042] (4) Removing the formwork after curing the above-mentioned foamed cement board for 30 minutes, and then cutting it into foamed cement boards of required specifications through a cutting device;

[0043] (5) Surface treatment, packaging, film covering and curing of the cut foamed cement board will be completed after 14 days.

[0044] Among them, during the preparation process of the foamed cement board, the stirring speed has a great influ...

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Abstract

The invention discloses a method for cutting a foaming cement board by means of a wet process. The method comprises the following steps: (1) mixing and stirring cement, pulverized fuel ash, reinforced fibers and an additive with water according to the proportion and performing mould pouring, foaming and standing to prepare the foaming cement board; (2) maintaining the foaming cement board for 20-30 minutes, performing mould removal and cutting the foaming cement board into required foaming cement boards with various specifications through a cutting device; and (3) performing surface treatment, package and film coating maintenance of the cut foaming cement boards for 14 days. When the strength of the foaming cement boards is low, the wet process cutting is performed, the amount of dust produced in the cutting process is reduced, the cutting efficiency is improved, and the product quality is improved greatly. The problems that large amount of hydration heat is produced in the foaming process of the foaming cement boards, caused cracks do not easily disperse, cutting size deviation is large when the strength of the foaming cement boards is high, and the like are solved. Accordingly, phenomena including leakage, cracks and the like of a foaming cement board outer wall external thermal insulation system caused by self size deviation, the cracks and other problems of the foaming cement boards are avoided.

Description

technical field [0001] The invention relates to the field of foamed cement boards, in particular to a wet cutting method for foamed cement boards. Background technique [0002] Foamed cement board is a thermal insulation material made of cement, fly ash, reinforced fiber, etc. through foaming, curing, cutting, surface treatment, etc. The surface layer and the like constitute the external thermal insulation system of the external wall of the foamed cement board. The system is an external thermal insulation form that integrates thermal insulation and fire prevention, and has the characteristics of excellent weather resistance and the same lifespan as the building. The system essentially improves the fire resistance of the external wall thermal insulation system, creates a new system that combines building energy saving and fire safety, and is applicable to external wall thermal insulation projects of various buildings. [0003] In recent years, the area of ​​new buildings co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B11/14B28B11/24
Inventor 刘小泉朱晓兵蒋青青雷文晗薛鹦琪袁丽华
Owner JIANGSU NIGAO SCI & TECH
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