Light clay

Abstract: The invention provides a method for enhancing the thermal-insulation performance of a well-frame wall body by adopting a light raw soil material and a composite thermal-insulation wall body, and belongs to the technical field of buildings. The method comprises the following steps: light clay slurry formed by mixing raw soil, cement and plant fiber is used for filling slits on the well-frame wall body, so as to form a flatting layer; pre-cast light clay building blocks are built on the surface of the flatting layer; and slurry formed by mixing raw soil and cement or a surface finishing material such as board is adopted as a surface layer. The composite thermal-insulation wall body mainly comprises a beam, a wood ridge, a light clay flatting layer filled in the slits on the surface of the wood ridge, and a light clay building block thermal-insulation layer built on the surface of the flatting layer. The invention has the advantages that the materials are mainly local construction materials; the building block building method is adopted; the thickness of the thermal-insulation layer of the wall body can be designed according to local conditions; the slits in the wall body are reduced; the poor thermotechnical performance of a well-frame building is improved effectively; the construction is simple; the construction cost is low; the purpose of ecological and environmental protection is realized; and the local advantages can be played.

Abstract: Clay mineralogy, together with silt and sand mineralogy and some chemical and physical characteristics, was investigated for samples from 10 profiles of Red-Yellow Podzolic soils (Inceptisols, Alfisols, and Ultisols) from Korea. The soils were generally strongly acid in reaction, except for those developed on limestone and from cultivated lands. Soil texture varied with profiles and horizons, ranging generally from silty clay to light clay to heavy clay. The silt fraction consisted, in all the profiles, principally of quartz with a small amount of feldspars and layer silicates, and the sand fraction was dominated by quartz and feldspars, with fair amounts of dolomite, micas, rock fragments, iron concretions, or clay aggregates depending on the profiles. Such mineralogical composition of the silt and sand fractions reflected well the Iithological nature of the parent materials or the stage of soil development. Clay mineralogical composition varied from profile to profile, though not very much in the sequen...

Abstract: The invention provides ultra-light clay and a preparation method thereof. The ultra-light clay is prepared from the following raw material components in percentage by mass: 20%-50% of rubber powder, 45%-75% of water, 2%-5% of foaming powder and 1%-5% of glutaraldehyde. The ultra-light clay is prepared through the following steps: mixing the formula amount of water and glutaraldehyde firstly, adding the formula amount of foaming powder for mixing, and finally, adding the formula amount of rubber powder for mixing to obtain the ultra-light clay. Compared with traditional boron-containing ultralight clay, the provided ultralight clay is nontoxic and environmentally friendly, and has better aggregation stability.

Abstract: Some notes are given about the genetics of clays from the Upsala region and the Gota River Valley. Three types of clays appear — heavy clay, silty medium clay, and sandy light clay — according to the granulometric composition which gives us information about their settling environments. The distribution of CaCO3 and Na in Glacial and Post-Glacial clay of Upsala are also discussed.