A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Preparation method of coal gangue foam concrete
The invention discloses a preparation method of coal gangue foam concrete. The preparation method comprises the steps of firstly, weighing 1 part by weight of a foaming agent KD-1 and 10-30 parts by weight of water, uniformly mixing, and then, foaming in a high-speed dispersion machine ( with the rotating speed being 2000-3000rad/min) for 3-5 minutes to prepare foam for later use; then, weighing 20 parts by weight of PO425 cement, 55-65 parts by weight of coal gangue with the particle size of 0.5-6mm, 15-20 parts by weight of water and an additional early strength agent accounting for 3-5% of the cement in weight, and then, uniformly stirring in a stirrer to prepare concrete slurry; next, adding the preparative foam into the concrete slurry, and stirring for 2-6 minutes until the slurry is uniform to obtain foam concrete slurry; and finally, injecting the prepared foam concrete slurry into a mould prepared in advance for molding, standing for 24 hours, then, placing the molded foam concrete slurry into a standard constant-temperature and constant-humidity concrete curing box (at the temperature being 19-21 DEG C, relative humidity being 95-99%) to cure until all stages of concrete are obtained. According to the preparation method, the coal gangue foam concrete is prepared by taking the uncalcined large-particle coal gangue as a raw material, so that the aim of changing waste materials into valuable things is achieved, the production cost is reduced, and the production efficiency is improved.
Preparation method of coal gangue foam concrete
The invention discloses a preparation method of coal gangue foam concrete. The preparation method comprises the steps of firstly, weighing 1 part by weight of a foaming agent KD-1 and 10-30 parts by weight of water, uniformly mixing, and then, foaming in a high-speed dispersion machine ( with the rotating speed being 2000-3000rad/min) for 3-5 minutes to prepare foam for later use; then, weighing 20 parts by weight of PO425 cement, 55-65 parts by weight of coal gangue with the particle size of 0.5-6mm, 15-20 parts by weight of water and an additional early strength agent accounting for 3-5% of the cement in weight, and then, uniformly stirring in a stirrer to prepare concrete slurry; next, adding the preparative foam into the concrete slurry, and stirring for 2-6 minutes until the slurry is uniform to obtain foam concrete slurry; and finally, injecting the prepared foam concrete slurry into a mould prepared in advance for molding, standing for 24 hours, then, placing the molded foam concrete slurry into a standard constant-temperature and constant-humidity concrete curing box (at the temperature being 19-21 DEG C, relative humidity being 95-99%) to cure until all stages of concrete are obtained. According to the preparation method, the coal gangue foam concrete is prepared by taking the uncalcined large-particle coal gangue as a raw material, so that the aim of changing waste materials into valuable things is achieved, the production cost is reduced, and the production efficiency is improved.
Preparation method of coal gangue foam concrete
ZHANG XIN (author) / ZHOU HAIBING (author) / ZHOU JIANLIN (author) / FENG TAO (author) / SHEN SHAOHUA (author) / WU ZEGUANG (author)
2015-04-01
Patent
Electronic Resource
English
IPC:
C04B
Kalk
,
LIME
Carbon sequestration type coal gangue foam concrete and preparation method thereof
| European Patent Office | 2024
Study on the High Performance Coal Gangue Foam Concrete
| British Library Online Contents | 2009
Coal gangue type concrete and preparation method thereof
| European Patent Office | 2023
Coal gangue pervious concrete and preparation method thereof
| European Patent Office | 2023
Preparation method of coal gangue coarse aggregate concrete
| European Patent Office | 2021