Southeast University

Songyu Liu

Guanghua Cai

Xiang Zhang

Liang Wang

Ying Zhang

Chuan Qin

Yizhao Liu

Yitong Li

Zhenyang Yuan

The present application belongs to the technical field of civil and architectural engineering materials, and in particular relates to an environmental and low-carbon foamed lightweight soil prepared by using COand MgO as raw materials. Raw material compositions of the carbon sequestration foamed lightweight soil include, in parts by weight, 10 to 200 parts of MgO, 10 to 100 parts of a filler, 2 to 45 parts of a CObubble cluster and 20 to 400 parts of water. The present application is made in view of the problems of large carbon emission and serious energy consumption caused by a cement solidification agent used in traditional foamed lightweight soil.

Carbon sequestration foamed lightweight soil and preparation method thereof

The disclosure belongs to the technical field of materials for civil construction engineering, and specifically relates to a green and low carbon emission foamed lightweight soil prepared by using serpentine, magnesium oxide and COas raw materials. In the serpentine carbon sequestration foamed lightweight soil, the ingredients of raw material include: magnesium oxide, serpentine, a filler, CObubbles and water.

Serpentine carbon sequestration foamed lightweight soil and preparation method thereof

A method for an ex-situ carbonization and solidification of silt soil using an active magnesium oxide, pertaining to the field of civil and hydraulic engineering. The method includes the steps of silt pretreatment, homomixing of solidifying agents, silt granulation, carbonization by carbon dioxide, exhaust gas/waste liquid collection, and resource utilization. In the method, the supply amount of the solidifying agent is adjusted through the actual measurement of the moisture content, and the granule size and carbon dioxide pressure are adjusted according to the soil properties. Therefore, a full mixing of the silt with the solidifying agents and a rapid carbonization of the magnesium oxide solidified silt granules can be achieved. Moreover, the dust and carbon dioxide can be absorbed during the operation, thereby avoiding secondary pollution. The silt carbonized granules can be used as filling materials for roadbeds, airport runways, engineering backfills, etc.

Treatment system and method for ex-situ carbonization and solidification of silt soil using active magnesium oxide

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Nanjing, China

Songyu Liu