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A3.5 B05 grade autoclaved aerated concrete block made of quartz weathered sand, and making method thereof

A technology of quartz weathered sand and concrete blocks, which can be applied to ceramic products, other household utensils, applications, etc., can solve the problems of few building materials enterprises, and achieve the effects of high SiO2 content, inhibition of digestion reaction, and large specific surface area

Active Publication Date: 2015-08-19
HUBEI YITONG CONSTR ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are very few building material enterprises that can adapt to local conditions and produce A2.0 B04, A3.5 B05 grade autoclaved aerated concrete blocks and thin blocks in large quantities and with a high pass rate

Method used

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  • A3.5 B05 grade autoclaved aerated concrete block made of quartz weathered sand, and making method thereof
  • A3.5 B05 grade autoclaved aerated concrete block made of quartz weathered sand, and making method thereof
  • A3.5 B05 grade autoclaved aerated concrete block made of quartz weathered sand, and making method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Quartz weathered sand and phosphogypsum are measured with a belt scale at a mass ratio of 100:6.2, and transported to the feed port of the ball mill, and mixed with water and waste slurry (the flow ratio of water and waste slurry is 7:1) to obtain a fineness of 26% slurry with mass percentage concentration of 62.0%; crush quicklime and ball mill to prepare quicklime powder with a fineness of 12%, digestion time of 9min, digestion temperature of 81°C, A (CaO+MgO) mass fraction of 78%; water and The aluminum powder paste is stirred evenly at a mass ratio of 9:1 to form an aluminum paste. The fineness is the mass percentage of the sieve residue of the dry material passing through the 180-mesh standard inspection sieve. The waste slurry described below is that after the leftover waste in the following enters the circulating water, the density formed by stirring is 1.28g / cm 3 The main components of the mixture include water, quartz weathered sand and silica provided by ...

Embodiment 2

[0048] Quartz weathered sand and phosphogypsum were measured with a belt scale at a mass ratio of 100:6.5, and mixed with water and waste slurry (the flow ratio of water and waste slurry was 7.2:1) to obtain a fineness of 25% and a mass percentage concentration of 62.3% slurry; crush quicklime, ball mill to prepare quicklime powder, the fineness is 12%, the digestion time is 12min, the digestion temperature is 82°C, and the mass fraction of A (CaO+MgO) is 76%; : 1 Stir evenly to form aluminum paste. The fineness is the mass percentage of the sieve residue of the dry material passing through the 180-mesh standard inspection sieve. The waste slurry is the density of 1.25g / cm formed by stirring after the leftovers in the following enter into the circulating water 3 The main components of the mixture include water, quartz weathered sand and silica provided by cement, lime and calcium hydroxide formed by hydration reaction of calcium oxide in cement, and calcium silicate hydrate. ...

Embodiment 3

[0053] Quartz weathered sand and phosphogypsum were measured with a belt scale at a mass ratio of 100:7, and transported to the feed port of the ball mill, and mixed with water and waste slurry (the flow ratio of water and waste slurry was 7.5:1) to obtain a fineness of 27%, mass percent concentration of 62.2% slurry; crushed quicklime, ball milled quicklime powder, fineness 11%, digestion time 12min, digestion temperature 81 ℃, A (CaO+MgO) mass fraction 80%; water and The aluminum powder paste is stirred evenly at a mass ratio of 9:1 to form an aluminum paste. The fineness is the mass percentage of the sieve residue of the dry material passing through the 180-mesh standard inspection sieve. The waste slurry is the density of 1.26g / cm formed by stirring after the leftovers in the following enter into the circulating water 3 The main components of the mixture include water, quartz weathered sand and silica provided by cement, lime and calcium hydroxide formed by hydration r...

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Abstract

The invention provides an A3.5 B05 grade autoclaved aerated concrete block made of quartz weathered sand. The high-performance A3.5 B05 grade autoclaved aerated concrete block is made by using the quartz weathered sand, cement, quicklime, industrial waste phosphogypsum, aluminum powder paste and water as raw materials. The dry density of the block is 509kg / m<3>, the average cubic compressive strength of the block is 3.6MPa, the single component minimum of the block is 3.2Mpa, the split-to-compression ratio is 0.20, the mass loss after freezing is 2.8%, the strength after freezing is 3.1Mpa, the heat conduction coefficient (dry state) is 0.1251W / (m.K), the drying shrinkage value (standard process) is 0.32mm / m, and the qualified rate is greater than 98%. The method has the advantages of reasonable treatment of raw materials, scientific formula calculation, concise production flow, recycling of production wastes. The block is a novel energy saving and environmental protection wall material, and can be industrially produced.

Description

technical field [0001] The invention relates to an A3.5 B05 grade autoclaved aerated concrete block prepared from quartz weathered sand and a preparation method thereof, belonging to the field of new energy-saving and environment-friendly wall materials. Background technique [0002] Quartz weathered sand is formed after natural quartz has been weathered for millions of years. Its original crystal form is transformed into fine grains, and some of them are transformed into amorphous. The main component is silicon dioxide (SiO 2 ), containing a small amount of alumina (Al 2 o 3 ), potassium oxide (K 2 O), iron oxide (Fe 2 o 3 ) and calcium oxide (CaO). The main role of quartz weathered sand in the production process of autoclaved aerated concrete blocks is to provide SiO 2 , its mineral composition is complex, the most abundant is quartz, followed by feldspar, mixed with mica, carbonate, clay, etc., which also contains a certain amount of Na 2 O and K 2 O, they genera...

Claims

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Application Information

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IPC IPC(8): C04B28/04C04B14/06C04B22/04C04B22/14
CPCC04B28/10C04B40/024C04B2201/20C04B2201/32C04B2201/50C04B7/02C04B14/06C04B22/144C04B22/04C04B38/02
Inventor 张晓东陶加林钟颂陈洁周宜
Owner HUBEI YITONG CONSTR ENG CO LTD
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