Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Lightweight aggregate concrete suitable for high remote pumping
The invention relates to a lightweight aggregate concrete suitable for high remote pumping. The lightweight aggregate concrete is characterized by comprising the following components in percentage by weight: 30%-40% of cement paste, 25%-35% of light crude aggregate materials and 30%-40% of refined aggregate materials, wherein the density of the cement paste is not larger than 2000kg/m<3>, the apparent density of the light crude aggregate materials is not smaller than 1000kg/m<3> and the difference between the density of the cement paste and the apparent density of the light crude aggregate materials is smaller than 600kg/m<3>. According to the invention, the cement paste has a viscosity of not smaller than 10mPa.S and is obtained by uniformly mixing the following materials in percentage by weight: 40%-60% of cement, 10%-20% of fly ash, 0%-20% of lightweight powder, 3%-5% of wollastonite, 20%-32% of water, 1%-4% of an inorganic viscosity modifier, 0%-0.2% of cellulose ether and 0.5%-1.4% of a polycarboxylic acid high-performance water reducer. The lightweight aggregate concrete has good workability, uniformity and pumpability, and can be used for high remote pumping.
Lightweight aggregate concrete suitable for high remote pumping
The invention relates to a lightweight aggregate concrete suitable for high remote pumping. The lightweight aggregate concrete is characterized by comprising the following components in percentage by weight: 30%-40% of cement paste, 25%-35% of light crude aggregate materials and 30%-40% of refined aggregate materials, wherein the density of the cement paste is not larger than 2000kg/m<3>, the apparent density of the light crude aggregate materials is not smaller than 1000kg/m<3> and the difference between the density of the cement paste and the apparent density of the light crude aggregate materials is smaller than 600kg/m<3>. According to the invention, the cement paste has a viscosity of not smaller than 10mPa.S and is obtained by uniformly mixing the following materials in percentage by weight: 40%-60% of cement, 10%-20% of fly ash, 0%-20% of lightweight powder, 3%-5% of wollastonite, 20%-32% of water, 1%-4% of an inorganic viscosity modifier, 0%-0.2% of cellulose ether and 0.5%-1.4% of a polycarboxylic acid high-performance water reducer. The lightweight aggregate concrete has good workability, uniformity and pumpability, and can be used for high remote pumping.
Lightweight aggregate concrete suitable for high remote pumping
YANG WEN (Autor:in) / LIU LI (Autor:in) / LIU TONG (Autor:in) / HUANG HANYANG (Autor:in)
06.05.2015
Patent
Elektronische Ressource
Englisch
IPC:
C04B
Kalk
,
LIME
Preparation and pumping processes for lightweight aggregate concrete
| Europäisches Patentamt | 2021
Pumping structure lightweight aggregate concrete and preparation method thereof
| Europäisches Patentamt | 2021
Preparation method and pumping process of high-strength lightweight aggregate concrete
| Europäisches Patentamt | 2020
Preparation and Application of High-Rise Building for Pumping Lightweight Aggregate Concrete
| British Library Conference Proceedings | 2009
Preparation and Application of High-Rise Building for Pumping Lightweight Aggregate Concrete
| Trans Tech Publications | 2009