A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Utilization of phosphogypsum for the preparation of non-autoclaved aerated concrete
Highlights Original phosphogypsum was utilized for the preparation of aerated concrete. Non-autoclaved process was adopted for the preparation of aerated concrete. A series of performances of non-autoclaved aerated concrete met the requirements of Chinese standard.
Abstract Phosphogypsum (PG) was used as raw material for the preparation of non-autoclaved aerated concrete, a series of technological parameters, such as water to solid ratio (W/S), quick lime content, steam temperature, and chemical activators, were investigated based on the density and compressive strength of specimens in this paper and the performances of products were also tested. The optimal mix proportion for preparing PG non-autoclaved aerated concrete (about 700kg/m3) is as follows: cement 15%, Ground Granulated Blast Furnace Slag (GGBFS) 30%, PG 55%, quick lime 7%, Na2SO4 1.6%, aluminum powder 0.074%, W/S 0.45. The best steam temperature used for curing the specimens is 90°C. The compressive strength, frost-resistance and thermal conductivity of products meet the requirements of Chinese autoclaved aerated concrete blocks standard, however, the shrinking of non-autoclaved aerated concrete is still a challenge and the durability also must be observed in the next work. The results also show that phosphogypsum not only plays the role of filler but also plays the role of activator.
Utilization of phosphogypsum for the preparation of non-autoclaved aerated concrete
Highlights Original phosphogypsum was utilized for the preparation of aerated concrete. Non-autoclaved process was adopted for the preparation of aerated concrete. A series of performances of non-autoclaved aerated concrete met the requirements of Chinese standard.
Abstract Phosphogypsum (PG) was used as raw material for the preparation of non-autoclaved aerated concrete, a series of technological parameters, such as water to solid ratio (W/S), quick lime content, steam temperature, and chemical activators, were investigated based on the density and compressive strength of specimens in this paper and the performances of products were also tested. The optimal mix proportion for preparing PG non-autoclaved aerated concrete (about 700kg/m3) is as follows: cement 15%, Ground Granulated Blast Furnace Slag (GGBFS) 30%, PG 55%, quick lime 7%, Na2SO4 1.6%, aluminum powder 0.074%, W/S 0.45. The best steam temperature used for curing the specimens is 90°C. The compressive strength, frost-resistance and thermal conductivity of products meet the requirements of Chinese autoclaved aerated concrete blocks standard, however, the shrinking of non-autoclaved aerated concrete is still a challenge and the durability also must be observed in the next work. The results also show that phosphogypsum not only plays the role of filler but also plays the role of activator.
Utilization of phosphogypsum for the preparation of non-autoclaved aerated concrete
Yang, Lin (author) / Yan, Yun (author) / Hu, Zhihua (author)
Construction and Building Materials ; 44 ; 600-606
2013-03-15
7 pages
Article (Journal)
Electronic Resource
English
Utilization of phosphogypsum for the preparation of non-autoclaved aerated concrete
| British Library Online Contents | 2013
Utilization of phosphogypsum for the preparation of non-autoclaved aerated concrete
| Online Contents | 2013
Preparation method of undisturbed phosphogypsum autoclaved aerated concrete
| European Patent Office | 2020
Production method of autoclaved aerated phosphogypsum concrete block
| European Patent Office | 2021
Autoclaved aerated concrete, autoclaved aerated concrete slab and preparation method thereof
| European Patent Office | 2020