Thermal characteristics analyses of clay bricks with wheat straw additives

Abstract

The production technology of the environmentally polluting baked bricks suggests that they can be replaced by bricks that are produced in an ecologically clean environment, such as the unbaked ones. In the present research work, different brick samples were made and studied, built with clay, sand and agricultural waste raw materials. With the development of the construction industry and increasing environmental requirements, research studies in the field continue to improve the thermal characteristics of the new construction materials. Thus, in the presented work bricks were made, which are a mixture of yellow clay and sand with added 5, 10, 15 and 20% wheat straw. The finished bricks are 0.35/0.08/0.17 m in size. Then, non-destructive measurements were carried out and thermal conductivity coefficient (k), specific heat capacity (Cp), thermal diffusivity (a) and density (ρ) were determined. The results of the measurements show that as the amount of wheat straw increases, the thermal characteristics of the samples improve. Finally, it is proved that the use of unbacked bricks from local clays and the utilization of binders from agricultural waste raw materials, will help to improve the energy performance of the produced environmentally friendly and economically beneficial structural building materials.

Hygrothermal Optimization for Excavated Soil Reuse in Various Climate Buildings: A Global Literature Meta-Analysis

“…The prevalent bioadditives commonly employed include hemp [37][38][39][40][41][42][43][44], wheat [10,41,[45][46][47][48][49], and barley [10,35,[50][51][52]. Additionally, alternative bioadditives encountered in various studies encompass reed [37,41,[53][54][55], olive [56][57][58], rice [53,59], straw [37,[60][61][62][63], flax [31,47,54,64], bagasse [59], corn [51], alfa [65,66], hibiscus cannabinus [67], kenaf [68], lavender [50], palm [69], pennisetum setaceum [70], pumice [43]…”

“…No mechanical [29,37,43,46,49,51,75,81] Compressed [9,10,23,[26][27][28][29][30][32][33][34]40,45,47,48,[50][51][52]57,59,[65][66][67][68][69][70][71]76,77,[84][85][86][87][88][89][90][91]95,96,[98][99][100]] Extruded [57,91,…”

“…Figure 7. Localisation of study and earth-based material technique production around the world: Afghanistan [29], Algeria[48,77,83], Argentina[21], Benin[68], Brazil[78], Bulgaria[49], Burkina Faso[23,27,74,84], Cameroon[22,28,71], Canada[85], China[34,[86][87][88][89][90], Cyprus[61], Egypt[10], Estonia[82], France[26,27,31,37-40,50,52,54,55,64,67,76,91-95] [31,41,42,44,47,63,81], Iran[30,32,96], Italy[35,56,58], Mexico[80], Morocco[45,57,65,66,69,70,[97][98][99][100], Nigeria[101], Peru[53], Poland[62], Portugal[75], Senegal[18,72,73]<...…”