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Low-density aerated concrete product and preparation method thereof

An air-entrained concrete, low-density technology, applied in the field of building materials, can solve the problems of hidden dangers of the environment and safety, low comprehensive utilization rate of output, etc., and achieve the effects of reducing the breakage rate, improving the appearance quality, and improving the pouring stability.

Inactive Publication Date: 2013-05-22
山东高阳建材有限公司
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Problems solved by technology

The existing domestic iron ore tailings have become the bulk solid waste with the largest industrial output and the lowest comprehensive utilization rate in my country, which has brought hidden dangers to the environment and safety

Method used

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  • Low-density aerated concrete product and preparation method thereof
  • Low-density aerated concrete product and preparation method thereof
  • Low-density aerated concrete product and preparation method thereof

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Embodiment Construction

[0024] A low-density air-entrained concrete product and its preparation method of the present invention will be further described through specific examples below, wherein Example 1 is the best example.

[0025] (1) Use the raw materials in parts by weight described in the examples in Table 1, wherein the lime is medium-speed digested lime, the effective CaO content is not less than 75%, MgO<5%, the digestion time is 10-15min, and the digestion temperature is 65-80°C , after being crushed, it is stored in the cylinder warehouse, and then enters the ball mill for grinding and then it is used for later use. Cement is stored in the batching silo for later use. Lime and cement are sent to the electronic weighing scale by the feeder for measurement. Iron tailings, quartz micropowder and gypsum are mixed with appropriate amount of water to make the fineness of the materials reach 8% of 200 mesh sieve, 12% of 200 mesh sieve and 4% of 200 mesh sieve respectively. The slurry is pumped...

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Abstract

The invention discloses a low-density aerated concrete product and a preparation method thereof, and belongs to the technical field of building materials. The preparation method adopting quartz micro powder and iron core tailing, which are respectively 25%-35% and 30%-40% of a dry material, as the primary materials comprises the following steps of: adding cement and lime for cementing; initiating by aluminum powder; and adjusting the component proportion and the steam-curing environment to prepare a light high-strength aerated concrete product with desiccated bulk density of 300kg / m<3>-525kg / m<3> and absolute-dry compressive strength of 2.0 MPa-3.0 MPa. According to the preparation method disclosed by the invention, low-carbon, environment-friendly and energy-saving production concept is adopted, and the quartz micro powder and iron ore tailing, which are discarded after quartz sand ore-dressing, are adopted as the primary materials for producing the low-density autoclaved aerated concrete product as the wall self-insulation material.

Description

technical field [0001] A low-density aerated concrete product and a preparation method thereof belong to the technical field of building materials. Background technique [0002] As the global energy problem becomes more and more obvious, the energy-saving issue of housing construction is getting more and more close attention from the whole society. It is imperative to develop green, environmentally friendly and energy-saving building materials, and green building energy-saving products will also be more and more favored by ordinary people. At present , my country puts forward newer and higher requirements for building exterior wall insulation materials, and the current building exterior wall insulation measures have serious fire hazards. [0003] Air-entrained concrete is a kind of thermal insulation material for building exterior walls. The main raw materials are siliceous materials such as sand, fly ash and silicon-containing tailings, and calcium materials such as lime and...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B38/02
Inventor 纪德志张本建张方耐崔丰国朱立勋董凤芝刘家第
Owner 山东高阳建材有限公司
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