Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Solid waste fly ash high-strength foam concrete and preparation method thereof
The invention belongs to the technical field of building materials, and relates to solid waste fly ash high-strength foam concrete which is prepared from the following components in parts by weight: 450-500 parts of ordinary Portland cement (42.5), 200-250 parts of fly ash, 550-850 parts of admixture, 280-320 parts of water, 1.5-2 parts of polypropylene fiber, 5-8 parts of a polycarboxylate superplasticizer, 10-15 parts of a foaming agent, 0.3-0.5 part of a foam stabilizer and 0-0.3 part of a catalyst. The preparation method comprises the following steps: (1) weighing the cementing material, the admixture, the fibers and the like, and uniformly stirring to obtain a mixed dry material; (2) mixing the polycarboxylate superplasticizer with water, adding the mixed dry material, and fully stirring to obtain slurry; (3) sequentially adding hydrogen peroxide, hydroxypropyl methyl cellulose and manganese dioxide, and stirring at a high speed to obtain foam concrete slurry; and (4) performing steps of pouring molding, demolding and maintenance on the foam concrete slurry. The foam concrete prepared from the industrial waste fly ash has the density of 1400-1500kg/m<3>, the compressive strength of 20-26Mpa and the heat conductivity coefficient of 0.221 W/(m.K)-0.249 W/(m.K), and the product has the advantages of environmental friendliness, high crack resistance, heat preservation, heat insulation and the like.
本发明属于建筑材料技术领域，所涉及的固废粉煤灰高强泡沫混凝土，按重量份，由下述组分制得：普通硅酸盐水泥(42.5)450～500份，粉煤灰200～250份，掺合料550～850份，水280～320份，聚丙烯纤维1.5～2份，聚羧酸高效减水剂5～8份，发泡剂10～15份，稳泡剂0.3～0.5份，催化剂0～0.3份。制备方法包括以下步骤：(1)称取胶凝材料、掺合料、纤维等搅拌均匀，得到混合干料；(2)将聚羧酸高效减水剂与水混合，加入混合干料充分搅拌，得到浆体；(3)依次加入双氧水、羟丙基甲基纤维素、二氧化锰，高速搅拌，得到泡沫混凝土浆体；(4)将泡沫混凝土浆体浇筑成型，脱模、养护。本发明利用工业废料粉煤灰制备的泡沫混凝土，密度为1400～1500kg/m3，抗压强度为20～26Mpa，导热系数为0.221W/(m·K)～0.249W/(m·K)，具有绿色环保、高强抗裂、保温隔热等优点。
Solid waste fly ash high-strength foam concrete and preparation method thereof
The invention belongs to the technical field of building materials, and relates to solid waste fly ash high-strength foam concrete which is prepared from the following components in parts by weight: 450-500 parts of ordinary Portland cement (42.5), 200-250 parts of fly ash, 550-850 parts of admixture, 280-320 parts of water, 1.5-2 parts of polypropylene fiber, 5-8 parts of a polycarboxylate superplasticizer, 10-15 parts of a foaming agent, 0.3-0.5 part of a foam stabilizer and 0-0.3 part of a catalyst. The preparation method comprises the following steps: (1) weighing the cementing material, the admixture, the fibers and the like, and uniformly stirring to obtain a mixed dry material; (2) mixing the polycarboxylate superplasticizer with water, adding the mixed dry material, and fully stirring to obtain slurry; (3) sequentially adding hydrogen peroxide, hydroxypropyl methyl cellulose and manganese dioxide, and stirring at a high speed to obtain foam concrete slurry; and (4) performing steps of pouring molding, demolding and maintenance on the foam concrete slurry. The foam concrete prepared from the industrial waste fly ash has the density of 1400-1500kg/m<3>, the compressive strength of 20-26Mpa and the heat conductivity coefficient of 0.221 W/(m.K)-0.249 W/(m.K), and the product has the advantages of environmental friendliness, high crack resistance, heat preservation, heat insulation and the like.
本发明属于建筑材料技术领域，所涉及的固废粉煤灰高强泡沫混凝土，按重量份，由下述组分制得：普通硅酸盐水泥(42.5)450～500份，粉煤灰200～250份，掺合料550～850份，水280～320份，聚丙烯纤维1.5～2份，聚羧酸高效减水剂5～8份，发泡剂10～15份，稳泡剂0.3～0.5份，催化剂0～0.3份。制备方法包括以下步骤：(1)称取胶凝材料、掺合料、纤维等搅拌均匀，得到混合干料；(2)将聚羧酸高效减水剂与水混合，加入混合干料充分搅拌，得到浆体；(3)依次加入双氧水、羟丙基甲基纤维素、二氧化锰，高速搅拌，得到泡沫混凝土浆体；(4)将泡沫混凝土浆体浇筑成型，脱模、养护。本发明利用工业废料粉煤灰制备的泡沫混凝土，密度为1400～1500kg/m3，抗压强度为20～26Mpa，导热系数为0.221W/(m·K)～0.249W/(m·K)，具有绿色环保、高强抗裂、保温隔热等优点。
Solid waste fly ash high-strength foam concrete and preparation method thereof
一种固废粉煤灰高强泡沫混凝土及其制备方法
HAO YUANHONG (Autor:in) / QIN LIDA (Autor:in)
05.02.2021
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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