阅读说明：本技术 一种加气混凝土制备工艺 (Preparation process of aerated concrete ) 是由 张�杰 顾明杰 赵丙见 霍根生 于 2020-04-21 设计创作，主要内容包括：本发明公开了一种加气混凝土制备工艺,属于建筑材料技术领域,原料准备：按照重量分数计,包括以下原料：加气混凝土基料90～150份、缓凝剂25～30份、沸石5～10份、胶粉8～12份、硫酸铝3～8份、抗收缩剂10～15份和膨胀材料20～25份；混合搅拌：将原料进行粉碎并破碎并研磨,且与适量的水混合搅拌均匀；浇筑成型：将混合均匀的原料倒入模具中浇筑成型,并停留2～3h,发气膨胀并凝固成型；切割蒸压：利用切割刀将凝固成型的加气混凝土进行切割成小块,并输入进入蒸压釜中进行蒸压8h。本发明通过彭化材料经过蒸压釜长时间高温高压蒸制能够使加气混凝土快速定型,将陶瓷废料进行蒸制能够增强加气混凝土的硬度。(The invention discloses a preparation process of aerated concrete, which belongs to the technical field of building materials, and comprises the following steps: the composite material comprises the following raw materials in parts by weight: 90-150 parts of aerated concrete base material, 25-30 parts of retarder, 5-10 parts of zeolite, 8-12 parts of rubber powder, 3-8 parts of aluminum sulfate, 10-15 parts of anti-shrinkage agent and 20-25 parts of expansion material; mixing and stirring: crushing and grinding the raw materials, and mixing and stirring the raw materials with a proper amount of water uniformly; pouring and forming: pouring the uniformly mixed raw materials into a mold for casting and molding, staying for 2-3 h, and performing gas expansion and solidification molding; cutting and steaming: cutting the solidified and formed aerated concrete into small blocks by using a cutting knife, and inputting the small blocks into a still kettle for steaming and pressing for 8 hours. According to the invention, the aerated concrete can be rapidly shaped by steaming the swelling material in the autoclave at high temperature and high pressure for a long time, and the hardness of the aerated concrete can be enhanced by steaming the ceramic waste.)

1. The preparation process of the aerated concrete is characterized by comprising the following steps of:

preparing raw materials: the composite material comprises the following raw materials in parts by weight: 90-150 parts of aerated concrete base material, 25-30 parts of retarder, 5-10 parts of zeolite, 8-12 parts of rubber powder, 3-8 parts of aluminum sulfate, 10-15 parts of anti-shrinkage agent and 20-25 parts of expansion material;

mixing and stirring: crushing and grinding the raw materials, and mixing and stirring the raw materials with a proper amount of water uniformly;

pouring and forming: pouring the uniformly mixed raw materials into a mold for casting and molding, staying for 2-3 h, and performing gas expansion and solidification molding;

cutting and steaming: cutting the solidified and formed aerated concrete into small blocks by using a cutting knife, and inputting the small blocks into a still kettle for still pressing for 8 hours;

and (5) maintaining and leaving factory: and (5) cooling the aerated concrete after the steam pressing is finished, and stacking the aerated concrete in order to obtain the finished product aerated concrete.

2. The process of claim 1, wherein the aerated concrete base material comprises ceramic waste, cement, coal dust, sand, calcium silicate and slag, and the anti-shrinkage agent comprises a photosensitive gum, a styrene copolymer and a fatty acid methyl ester ethylate.

3. The aerated concrete preparation process of claim 2, wherein the aerated concrete base material comprises, by weight, 25-30 parts of ceramic waste, 5-15 parts of cement, 10-20 parts of pulverized coal, 15-25 parts of sand, 25-30 parts of calcium silicate and 10-30 parts of slag.

4. The process for preparing aerated concrete according to claim 3, wherein the aerated concrete base material comprises 28 parts of ceramic waste, 13 parts of cement, 18 parts of coal powder, 23 parts of sand, 25 parts of calcium silicate and 20 parts of slag.

5. The process for preparing aerated concrete according to claim 1, wherein the anti-shrinkage agent comprises 4-6 parts by weight of photosensitive gum, 3-4 parts by weight of styrene copolymer and 3-5 parts by weight of fatty acid methyl ester ethylate.

6. The process for preparing aerated concrete according to claim 1, wherein the anti-shrinkage agent comprises 5 parts of photosensitive gum, 3 parts of styrene copolymer and 4 parts of fatty acid methyl ester ethyl-nourishing compound.

7. The process for preparing aerated concrete according to claim 1, wherein the retarder is anhydrite.

8. The process for preparing aerated concrete according to claim 1, wherein the expansive material is a concrete expansive agent.

9. The preparation process of the aerated concrete according to claim 1, wherein the autoclave is maintained at a temperature of 180-190 ℃ and 10-13 MPa for 8 hours.

Technical Field

The invention relates to a concrete preparation process, in particular to an aerated concrete preparation process, and belongs to the technical field of building materials.

Background

The aerated concrete is a light porous silicate product prepared by taking siliceous materials and calcareous materials as main raw materials, adding a gas former, and carrying out the processes of batching, stirring, pouring, precuring, cutting, autoclaving, curing and the like. The aerated concrete is named as aerated concrete because the aerated concrete contains a large amount of uniform and fine air holes.

The existing aerated concrete has the following defects: (1) the compressive strength of the existing aerated concrete is low; (2) the contractibility is low, and the wall is unstable due to long-time accumulation, so that cracks appear on the wall.

Disclosure of Invention

The invention mainly aims to solve the defects of the prior art and provide a preparation process of aerated concrete.

The purpose of the invention can be achieved by adopting the following technical scheme:

the preparation process of the aerated concrete comprises the following steps:

preparing raw materials: the composite material comprises the following raw materials in parts by weight: 90-150 parts of aerated concrete base material, 25-30 parts of retarder, 5-10 parts of zeolite, 8-12 parts of rubber powder, 3-8 parts of aluminum sulfate, 10-15 parts of anti-shrinkage agent and 20-25 parts of expansion material;

mixing and stirring: crushing and grinding the raw materials, and mixing and stirring the raw materials with a proper amount of water uniformly;

pouring and forming: pouring the uniformly mixed raw materials into a mold for casting and molding, staying for 2-3 h, and performing gas expansion and solidification molding;

cutting and steaming: cutting the solidified and formed aerated concrete into small blocks by using a cutting knife, and inputting the small blocks into a still kettle for still pressing for 8 hours;

and (5) maintaining and leaving factory: and (5) cooling the aerated concrete after the steam pressing is finished, and stacking the aerated concrete in order to obtain the finished product aerated concrete.

Preferably, the aerated concrete base material comprises ceramic waste, cement, coal dust, sand, calcium silicate and slag, and the antishrinking agent comprises photosensitive gum, styrene copolymer and fatty acid methyl ester ethyl ester substrate.

Preferably, the aerated concrete base material comprises, by weight, 25-30 parts of ceramic waste, 5-15 parts of cement, 10-20 parts of coal powder, 15-25 parts of sand, 25-30 parts of calcium silicate and 10-30 parts of slag.

Preferably, in the aerated concrete base material, 28 parts of ceramic waste, 13 parts of cement, 18 parts of coal powder, 23 parts of sand, 25 parts of calcium silicate and 20 parts of slag.

Preferably, the anti-shrinking agent comprises 4-6 parts of photosensitive gum, 3-4 parts of styrene copolymer and 3-5 parts of fatty acid methyl ester ethyl radical compound by weight.

Preferably, the antishrinking agent comprises 5 parts of photosensitive gum, 3 parts of styrene copolymer and 4 parts of fatty acid methyl ester ethyl radical compound.

Preferably, the retarder is anhydrite.

Preferably, the expanding material is a concrete expanding agent.

Preferably, the autoclave is autoclaved for 8 hours at 180-190 ℃ and 10-13 MPa.

The invention has the beneficial technical effects that: according to the preparation process of the aerated concrete, the anti-shrinkage agent is added in the preparation of the raw materials, so that the anti-shrinkage capacity of the concrete can be effectively improved, and the anti-deformation capacity of the aerated concrete can be improved through the interaction of the zeolite and the anhydrite; the expanded material can be quickly shaped by steaming the expanded material in an autoclave at high temperature and high pressure for a long time, and the hardness of the aerated concrete can be enhanced by steaming the ceramic waste.

Detailed Description

In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail with reference to the following examples, but the embodiments of the present invention are not limited thereto.

The preparation process of the aerated concrete provided by the embodiment comprises the following steps:

preparing raw materials: the composite material comprises the following raw materials in parts by weight: 90-150 parts of aerated concrete base material, 25-30 parts of retarder, 5-10 parts of zeolite, 8-12 parts of rubber powder, 3-8 parts of aluminum sulfate, 10-15 parts of anti-shrinkage agent and 20-25 parts of expansion material;

mixing and stirring: crushing and grinding the raw materials, and mixing and stirring the raw materials with a proper amount of water uniformly;

pouring and forming: pouring the uniformly mixed raw materials into a mold for casting and molding, staying for 2-3 h, and performing gas expansion and solidification molding;

cutting and steaming: cutting the solidified and formed aerated concrete into small blocks by using a cutting knife, and inputting the small blocks into a still kettle for still pressing for 8 hours;

and (5) maintaining and leaving factory: and (5) cooling the aerated concrete after the steam pressing is finished, and stacking the aerated concrete in order to obtain the finished product aerated concrete.

The aerated concrete base material comprises ceramic waste, cement, coal powder, sand, calcium silicate and furnace slag, and the antishrinking agent comprises photosensitive gum, styrene copolymer and fatty acid methyl ester ethyl ester. The aerated concrete base material comprises, by weight, 25-30 parts of ceramic waste, 5-15 parts of cement, 10-20 parts of coal powder, 15-25 parts of sand, 25-30 parts of calcium silicate and 10-30 parts of furnace slag. The aerated concrete base material comprises 28 parts of ceramic waste, 13 parts of cement, 18 parts of coal powder, 23 parts of sand, 25 parts of calcium silicate and 20 parts of slag.

The anti-shrinking agent comprises 4-6 parts of photosensitive gum, 3-4 parts of styrene copolymer and 3-5 parts of fatty acid methyl ester ethyl radical compound by weight. 5 parts of photosensitive gum, 3 parts of styrene copolymer and 4 parts of fatty acid methyl ester ethyl acylate in the anti-shrinking agent. The retarder is anhydrite. The expansion material is a concrete expanding agent. And (4) carrying out steam pressing for 8 hours in a steam pressing kettle at the temperature of 180-190 ℃ and under the pressure of 10-13 MPa.