SONG Qiang (1990-), male, Ph.D. E-mail: songqiang3709@163.com
Foam concrete as one of the most widely used and investigated construction materials with integrated structural insulation has various unique properties such as low self-weight, fire resistance and air borne sound insulation. The compressive strength and thermal conductivity of foam concrete are the key factors affecting the application. The compressive strength of foam concrete increases while the thermal conductivity decreases with the increase of the density, thus hindering the application. In this review, the effects of foaming agent, density, porosity, admixture and water cement ratio on the compressive strength and thermal conductivity were discussed. Recent research work on lightweight foam concrete and integration of thermal insulation structure foam concrete were summarized. The existing problems (i.e., collapse of the slurry, incompatibility of mechanical and heat preservation properties and low durability) and the corresponding solutions to the problems were given. This review could provide a basis for future investigation and practical engineering application.
| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |