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A kind of preparation method of lightweight concrete prefabricated slab

A light-weight concrete and prefabricated technology, which is applied to ceramic products, other household appliances, and other household appliances, can solve the problems that ordinary prefabricated large slabs are too heavy, unfavorable for transportation, lifting and installation, etc., to reduce construction noise and level off Good degree, improve the effect of construction accuracy

Active Publication Date: 2019-01-11
GUANGDONG PROVINCIAL ACAD OF BUILDING RES GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation method of lightweight concrete prefabricated slabs, which solves the problem that the weight of ordinary prefabricated slabs is too heavy and is not conducive to transportation, lifting and installation. The lightweight concrete prepared by this method Prefabricated large slabs are about 50% lighter than ordinary concrete prefabricated wall panels, effectively improving the construction efficiency of prefabricated wall panels

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The preparation method of the lightweight concrete prefabricated slab provided in this embodiment comprises the following steps:

[0027] (1) According to the fact that each cubic meter of lightweight concrete prefabricated slab contains 450kg of cement, 195kg of stone powder, 3.25kg of water reducing agent, and 0.05kg of foaming agent, the raw materials are selected. First, the foaming agent is foamed, and then the cement and stone powder Mix with water reducing agent to make cement mortar, then add the foamed foaming agent into cement mortar, stir well to make lightweight concrete;

[0028] (2) The lightweight concrete is poured into the mold, and the lightweight concrete assembly slab is made after demoulding and curing.

[0029] At the same time, before pouring lightweight concrete into the mould, the pre-embedding of the hydropower pipelines and the installation of steel wire mesh for the lightweight prefabricated large slabs are completed in the mold. When pouring...

Embodiment 2

[0039] The preparation method of the lightweight concrete prefabricated slab provided in this embodiment comprises the following steps:

[0040] (1) According to the fact that each cubic meter of lightweight concrete prefabricated slab contains 550kg of cement, 65kg of stone powder, 9.75kg of water reducing agent, and 0.01kg of foaming agent, the raw materials are selected. First, the foaming agent is foamed, and then the cement and stone powder Mix with water reducing agent to make cement mortar, then add the foamed foaming agent into cement mortar, stir well to make lightweight concrete;

[0041] (2) The lightweight concrete is poured into the mold, and the lightweight concrete assembly slab is made after demoulding and curing.

[0042] Wherein the water reducer in step (1) is a polycarboxylate water reducer, and the foaming agent is fatty alcohol polyoxyethylene ether sodium sulfate AES.

[0043] Step (2) The mold is pre-painted with a release agent, and the release agent ...

Embodiment 3

[0051] The preparation method of the lightweight concrete prefabricated slab provided in this embodiment comprises the following steps:

[0052] (1) According to the fact that each cubic meter of lightweight concrete prefabricated slab contains 500kg of cement, 100kg of stone powder, 6.25kg of water reducing agent, and 0.03kg of foaming agent, each raw material is selected. First, the foaming agent is foamed, and then the cement and stone powder Mix with water reducing agent to make cement mortar, then add the foamed foaming agent into cement mortar, stir well to make lightweight concrete;

[0053] (2) The lightweight concrete is poured into the mold, and the lightweight concrete assembly slab is made after demoulding and curing.

[0054] Wherein the water reducer in step (1) is a polycarboxylate water reducer, and the foaming agent is a rosin soap foaming agent.

[0055]Step (2) The mold is pre-painted with a release agent, and the release agent is phthalate.

[0056] The w...

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Abstract

The invention discloses a production method of lightweight concrete prefabricated big panels. The method comprises the following steps: 1, selecting raw materials according to a case that every cubic meter of lightweight concrete prefabricated big panels contains 450-550kg of cement, 65-195kg of stone flour, 3.25-9.75kg of a water reducer and 0.01-0.05kg of a foaming agent, foaming the foaming agent, uniformly mixing cement, the stone flour and the water reducer to prepare a cement mortar, adding the foamed foaming agent to the cement mortar, and uniformly stirring the foamed foaming agent and the cement mortar to prepare lightweight concrete; and 2, pouring the lightweight concrete in a die, and carrying out demolding treatment and curing to produce the lightweight concrete prefabricated big panels. The method solves the problem of adverseness of too large weight of common prefabricated big panels to transportation and hoisting installation, the weight of the lightweight concrete prefabricated big panels produced in the invention is about 50% lower than that of common concrete prefabricated big panels, and the construction efficiency of prefabricated wallboards is effectively increased.

Description

technical field [0001] The invention belongs to the technical field of prefabricated large slabs, and in particular relates to a preparation method of lightweight concrete prefabricated large slabs. Background technique [0002] The promotion of prefabricated houses is the core content of construction industrialization. The development of modern construction industry needs to promote prefabricated components and mechanized assembly construction. Concrete prefabricated houses are in line with the development direction of modern energy-saving buildings and green buildings. At present, the external wall system of my country's main building structure of "beam + column + infill wall" is no longer suitable for the needs of the development of modern construction industry. At the same time, the popularization of construction machinery and the progress of construction technology provide favorable conditions for the promotion of concrete prefabricated houses. Contents of the invent...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/10C04B28/00C04B111/40
CPCC04B28/00C04B38/10C04B2111/40C04B2201/20C04B2201/32C04B2201/50C04B14/02C04B24/24C04B24/16C04B24/166C04B24/34
Inventor 李建新杨仕超费飞龙陈培鑫李晓琛陈耿王新祥王元光
Owner GUANGDONG PROVINCIAL ACAD OF BUILDING RES GRP CO LTD
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