Concrete extrusion wallboard and preparation method thereof

A technology of concrete and wall panels, applied in the field of building materials, can solve the problems of large thermal expansion and contraction coefficient, large drying shrinkage value, and unstable compactness, etc., and achieve small thermal expansion and cold contraction coefficient, large drying shrinkage value, and low cost low effect

Pending Publication Date: 2021-01-26
GUANGDONG BOZHILIN ROBOT CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] As a new type of wall material, lightweight concrete extruded wallboard has the characteristics of light weight, high strength, easy installation, energy saving and environmental protection, fire prevention, sound insulation, waterproof, heat preservation, antifreeze, shockproof, direct putty decoration and civilized construction, etc. , Widely used in various fields, such as large-scale underground foundation templates, hospital partition walls, administrative office building partition walls, KTV box partition walls, hotel box partition walls, hotel room partition walls, toilet partition walls, chemical warehouse partition walls, etc. At present, some housing construction projects use lightweight concrete extruded wall panels, but the lightweight concrete extruded wall panels on the market generally have high surface density, unstable compactness, reduced strength, large drying shrinkage, and thermal expansion and contraction coefficients. Big problem, causing wall panel seams to crack

Method used

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  • Concrete extrusion wallboard and preparation method thereof
  • Concrete extrusion wallboard and preparation method thereof

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preparation example Construction

[0043] A method for preparing a concrete extruded wallboard, comprising the following steps:

[0044] Mix Portland cement, sulphoaluminate cement, gypsum, aggregate and water and stir to prepare concrete blank;

[0045] performing vibratory extrusion on the concrete billet to prepare a concrete extruded wallboard;

[0046] The technological parameter of described vibration extrusion comprises:

[0047] The vibration amplitude of the vibration is 0.9mm-1.1mm, and the main vibration frequency is 45Hz-55Hz;

[0048] The helix pitch of the reamer is 65mm-80mm, the helix length is 290mm-310mm, the taper of the helix bottom diameter is 35°-45°, and the reamer speed is 210r / min-230r / min;

[0049] The boosting frequency for controlling the travel speed of the concrete slab is 35Hz-39Hz.

[0050] Based on the traditional use of Portland cement as the gel material, the present invention mixes sulphoaluminate cement and gypsum to optimize the performance of lightweight concrete, formi...

Embodiment 1

[0103] This embodiment provides a concrete extruded wallboard and a preparation method thereof, the steps are as follows:

[0104] In parts by weight, weigh 19 parts of P.O 42.5 Portland cement, 4 parts of Yunyan low-alkali 42.5 sulfoaluminate cement, 1.5 parts of anhydrous gypsum, 5.5 parts of secondary fly ash, 15 parts of recycled aggregate; stone powder 10 parts; cinder 30 parts; ceramsite 15 parts.

[0105] First pre-wet the recycled aggregate and ceramsite. During production, mix the pre-wetted recycled aggregate and ceramsite with stone powder and cinder, stir for 30 seconds, add fly ash, gypsum, and Yunyan low-alkali 42.5 sulfoaluminate cement , P.O 42.5 Portland cement, stir for 30s, then add a certain amount of water (water-cement ratio is 0.25), stir for 60s to get dry hard concrete, that is, concrete blank.

[0106] The above-mentioned concrete billet is conveyed to the feeding port of the extrusion molding machine through the belt, and the concrete billet is cont...

Embodiment 2

[0111] This embodiment provides a concrete extruded wallboard and a preparation method thereof, the steps are as follows:

[0112] In parts by weight, weigh 20 parts of P.O 42.5 Portland cement, 5 parts of Yunyan low-alkali 42.5 sulfoaluminate cement, 2 parts of anhydrous gypsum, 3 parts of secondary fly ash, 16.5 parts of recycled aggregate; stone powder 6 parts; cinder 34 parts; ceramsite 13.5 parts.

[0113] First pre-wet the recycled aggregate and ceramsite. During production, mix the pre-wetted recycled aggregate and ceramsite with stone powder and cinder, stir for 30 seconds, add fly ash, gypsum, and Yunyan low-alkali 42.5 sulfoaluminate cement , P.O 42.5 Portland cement, stir for 30s, then add a certain amount of water (water-cement ratio is 0.23), stir for 60s to get dry hard concrete, that is, concrete blank.

[0114] The above-mentioned concrete billet is conveyed to the feeding port of the extrusion molding machine through the belt, and the concrete billet is conti...

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Abstract

The invention relates to a concrete extrusion wallboard and a preparation method thereof, and relates to the technical field of building materials. The preparation method of the concrete extrusion wallboard comprises the following steps that portland cement, sulphate aluminium cement, gypsum, aggregate and water are mixed and stirred to prepare a concrete blank; and vibration extrusion is conducted on the concrete blank to prepare the concrete extrusion wallboard. The technological parameters of vibration extrusion comprise the vibration amplitude of vibration of 0.9 mm to 1.1 mm, and the mainvibration frequency of 45Hz to 55Hz; and the spiral spacing of a reamer of 65 mm to 80 mm, the spiral length of 290 mm to 310 mm, the taper of the spiral bottom diameter of 35 degrees to 45 degrees,and the rotating speed of the reamer of 210r / min to 230r / min; And the assisting frequency of the advancing speed of the concrete blank is controlled to be 35Hz to 39Hz. The prepared concrete extrusionwallboard is small in surface density, large in compactness, high in strength, large in drying shrinkage value, small in thermal expansion and cold contraction coefficient and small in cracking rateafter installation.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a concrete extruded wallboard and a preparation method thereof. Background technique [0002] As a new type of wall material, lightweight concrete extruded wallboard has the characteristics of light weight, high strength, easy installation, energy saving and environmental protection, fire prevention, sound insulation, waterproof, heat preservation, antifreeze, shockproof, direct putty decoration and civilized construction, etc. , Widely used in various fields, such as large-scale underground foundation templates, hospital partition walls, administrative office building partition walls, KTV box partition walls, hotel box partition walls, hotel room partition walls, toilet partition walls, chemical warehouse partition walls, etc. At present, some housing construction projects use lightweight concrete extruded wall panels, but the lightweight concrete extruded wall panels...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B28B3/20B28B3/22C04B28/06
CPCB28B3/205B28B3/22C04B28/06C04B2201/20C04B2201/50C04B7/02C04B22/143C04B18/16C04B14/28C04B18/06C04B18/027C04B18/08
Inventor 唐振中李朗杨强李达
Owner GUANGDONG BOZHILIN ROBOT CO LTD
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