Relationship between operational properties of peat heat-insulating materials and the content of mineral binders in them

Abstract

<jats:p>This work presents the main results of calculation and experimental study on relation between the operational properties of peat heat-insulating materials (HIM) and the content of mineral binders in them aiming at reducing heat energy costs by energy-consuming objects. It was experimentally proved that introduction of cement increases thermal conductivity, and introduction of calcium oxide as a mineral binder, on the contrary, promotes the development of material porosity while maintaining strength characteristics and elasticity and helps to reduce the thermal conductivity and specific density. The established relationship between the content of calcium oxide and the thermal conductivity enables modelling of technology for HIM producing based on peat and inorganic binders.</jats:p>

The Influence of the Relative Content of Peat and Mineral Binder on Thermal Insulation Composite Performance Characteristics

“…These characteristics are also comparable with the characteristics of thermal insulation material made of low-moor peat with binder, frame component (wooden aggregate), and additive (Vasiļjeva and Korjakins, 2017). Our previous studies (Sinitsyn et al, 2020; have shown that introducing a three-component polymer into a composite mixture consisting of high-lying peat, sawdust and gypsum increases mechanical strength while decreasing average density and thermal conductivity. However, further testing showed that the polymer engulfs the gypsum, peat, and sawdust particles, causing a gradual decrease in porosity during the formation of a solid structure.…”

Pros and Cons of Strategies to Reduce Greenhouse Gas Emissions from Peatlands: Review of Possibilities

“…Using different methods, peat can produce thermal insulation and raw materials in various construction materials substrates, and pharmaceutical products [152][153][154][155][156]. Also, an agro-industrial resource, peat, has a high but not fully used potential [57,58].…”

“…Peat soil can be a promising addi-tive in construction materials, strengthening the durability of masonry blocks to meet necessary building standards. It is possible to improve building materials' characteristics, including insulation properties, using peat as an additive or producing the products themselves [99,[152][153][154][155][156]. In building materials, cement has often been used with high-lying peat, moistening peat with water first.…”

“…In building materials, cement has often been used with high-lying peat, moistening peat with water first. Then, after the peat is wholly saturated with water, calcium oxide, which can be obtained by calcining limestone, is added to the peat [154]. The search for alternative and innovative thermal insulation solutions in renovation has been more common recently, including using peat as a raw material or additive in thermal insulation panels [57,93,155,156].…”

Investigation of the Influence of the Degree of Composition of Peat on the Characteristics of Composite Thermal Insulation Materials

“…При производстве ТИМ с применением кремнийорганических полимеров в качестве вяжущих и природных теплоизоляторов используют низинный торф, в том числе из торфяников Грязовецкого и Вологодского районов Вологодской области [13]. Степень гумификации верховой торф составляет 14…16 % (слаборазложившийся); низинного -39 % (сильноразложившийся).…”