Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-strength light-weight concrete and preparation method thereof
The invention relates to high-strength light-weight concrete and a preparation method thereof. The preparation method comprises the following steps: step 1, ceramsites and pottery sand which are included in the raw material formula of the high-strength light-weight concrete are soaked in water to fully absorb water; step 2, adding the ceramsites and pottery sand absorbed with water and the rest of materials to a stirring machine, stirring for 3 min to obtain a high-strength light-weight concrete mixture. The high-strength light-weight concrete in the raw material formula comprises the following raw materials in percentage by weight: 18-27% of portland cement, 6-10% of vitrified microspheres, 2-6% of silica fume, 20-30% of ceramsites, 25-35% of pottery sand, 0.2-0.8% of a high-performance water reducing agent, 0.05-0.3% of molecular sieves, 0.05-0.8% of an air entraining agent and 8-12% of water. According to the high-strength light-weight concrete and the preparation method thereof, provided by the invention, through the combined action of the adopted molecular sieves and the air entraining agent, a large number of air holes causing little influence on the strength is introduced into the concrete, the unit weight of the high-strength light-weight concrete is reduced, the application range of the high-strength light-weight concrete is expanded, the possibility that aggregate in the concrete tends to float upwards due to density variation can be greatly reduced under the existence of the air holes.
High-strength light-weight concrete and preparation method thereof
The invention relates to high-strength light-weight concrete and a preparation method thereof. The preparation method comprises the following steps: step 1, ceramsites and pottery sand which are included in the raw material formula of the high-strength light-weight concrete are soaked in water to fully absorb water; step 2, adding the ceramsites and pottery sand absorbed with water and the rest of materials to a stirring machine, stirring for 3 min to obtain a high-strength light-weight concrete mixture. The high-strength light-weight concrete in the raw material formula comprises the following raw materials in percentage by weight: 18-27% of portland cement, 6-10% of vitrified microspheres, 2-6% of silica fume, 20-30% of ceramsites, 25-35% of pottery sand, 0.2-0.8% of a high-performance water reducing agent, 0.05-0.3% of molecular sieves, 0.05-0.8% of an air entraining agent and 8-12% of water. According to the high-strength light-weight concrete and the preparation method thereof, provided by the invention, through the combined action of the adopted molecular sieves and the air entraining agent, a large number of air holes causing little influence on the strength is introduced into the concrete, the unit weight of the high-strength light-weight concrete is reduced, the application range of the high-strength light-weight concrete is expanded, the possibility that aggregate in the concrete tends to float upwards due to density variation can be greatly reduced under the existence of the air holes.
High-strength light-weight concrete and preparation method thereof
GENG CHANGSHENG (Autor:in) / ZANG JUN (Autor:in)
29.07.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
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