A3.5 B05 grade autoclaved aerated concrete block made of quartz weathered sand and its application on the wall

A technology of concrete block and quartz weathered sand, which is applied in the field of new energy-saving and environmentally friendly wall materials, can solve the problems of few building materials enterprises, and achieve the effects of high SiO2 content, fast digestion speed, and inhibition of digestion reaction.

Active Publication Date: 2017-11-14
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 its application on the wall
  • A3.5 B05 grade autoclaved aerated concrete block made of quartz weathered sand and its application on the wall
  • A3.5 B05 grade autoclaved aerated concrete block made of quartz weathered sand and its application on the wall

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Quartz weathered sand and phosphogypsum were measured with a belt scale according to the mass ratio of 100:6.2, and were 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 7:1) to obtain a fineness of 26%, mass percent concentration is 62.0% slurry; broken quicklime, ball milling to prepare quicklime powder, fineness is 12%, digestion time 9min, digestion temperature 81 ℃, A (CaO+MgO) mass fraction 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 cement...

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 percent concentration of 62.3% slurry; crush quicklime and 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%; water and aluminum powder paste are mixed in a mass ratio of 9 : 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 react...

Embodiment 3

[0053]Quartz weathered sand and phosphogypsum were measured with a belt scale according to the mass ratio of 100:7, transported to the feed port of the ball mill, mixed with water and waste slurry (the flow ratio of water and waste slurry was 7.5:1) and mixed to obtain a fineness of 27%, mass percent concentration is 62.2% slurry; broken quicklime, ball milling to prepare quicklime powder, fineness is 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 hydroxi...

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Abstract

The invention provides an A3.5B05 level autoclaved aerated concrete building block prepared from quartz weathered sand and application of the building block to a wall body. The A3.5B05 level high-performance autoclaved aerated concrete building block is prepared by using quartz weathered sand, cement, quicklime, industrial waste ardealite, aluminum powder paste and water as raw materials. The dry density of the building block is 509kg / m<3>; the average value of the cubic compressive strength is 3.6MPa; the single-unit minimum value is 3.2Mpa; the split pressure ratio is 0.20; the frozen mass loss is 2.8 percent; the frozen strength is 3.1Mpa; the heat conductivity coefficient (the dry state) is 0.1251 W / (m K); the drying shrinkage value (a standard method) is 0.32mm / m; the qualified rate is greater than 98 percent. The raw material treatment method is reasonable; the formula calculation is scientific; the production flow process is simple and compact; production waste materials can be cyclically utilized. The building block can be applied to heat insulation wall body materials.

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 generat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14C04B38/02
CPCC04B28/14C04B2111/40C04B14/06C04B18/0418C04B7/34C04B14/34C04B38/02
Inventor 周宜陶加林张晓东钟颂陈洁
Owner HUBEI YITONG CONSTR ENG CO LTD
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