A. N. Blaznov, P. V. Vereshchagin, G. S. Zadvornykh, E. G. Sakoshev, D. V. Chashchilov, Z. G. Sakoshev, V. V. Firsov, N. V. Bychin
{"title":"添加矿物颗粒的石膏样品研究","authors":"A. N. Blaznov, P. V. Vereshchagin, G. S. Zadvornykh, E. G. Sakoshev, D. V. Chashchilov, Z. G. Sakoshev, V. V. Firsov, N. V. Bychin","doi":"10.1134/S1995421224700679","DOIUrl":null,"url":null,"abstract":"<p>The DSC method revealed endothermic effects (–613.9 J/g) during gypsum dihydrate heating associated with the heat absorption during the release of crystalline hydrate water in the range of 100–250°C during the heating process. Mass losses during water evaporation were determined by TGA and amount of up to 20%. The thermal conductivity coefficient of gypsum samples is 0.288 W/m K. The influence of mineral additives—glass spheres, wollastonite, and chopped basalt fiber—on changes in the properties of gypsum samples at curing times of 2 h and 1, 3, 7, and 14 days was studied. An addition of glass spheres up to 10 wt % reduces gypsum strength by 10–13% and density, by 16%, additive up to 20 wt % reduces strength by two times and density by 36–40%, and additive up to 50 wt % reduces strength by from five to six times and density by 80–85%, with the thermal conductivity coefficient decreasing to 0.236 W/m K. An addition of wollastonite 10–20 wt % increases the strength of gypsum samples by 13–16%, and addition of 50 wt % reduces the strength by two times. An addition of 0.5–1.5 wt % chopped basalt fibers increases strength by 10–16%, as well as the strength gain rate. Additions of wollastonite and basalt fibers practically do not change the density of gypsum samples, but increase the thermal conductivity coefficient to 0.320–0.373 W/m K.</p>","PeriodicalId":741,"journal":{"name":"Polymer Science, Series D","volume":null,"pages":null},"PeriodicalIF":0.5800,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Study of Gypsum Samples with Additions of Mineral Particles\",\"authors\":\"A. N. Blaznov, P. V. Vereshchagin, G. S. Zadvornykh, E. G. Sakoshev, D. V. Chashchilov, Z. G. Sakoshev, V. V. Firsov, N. V. Bychin\",\"doi\":\"10.1134/S1995421224700679\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The DSC method revealed endothermic effects (–613.9 J/g) during gypsum dihydrate heating associated with the heat absorption during the release of crystalline hydrate water in the range of 100–250°C during the heating process. Mass losses during water evaporation were determined by TGA and amount of up to 20%. The thermal conductivity coefficient of gypsum samples is 0.288 W/m K. The influence of mineral additives—glass spheres, wollastonite, and chopped basalt fiber—on changes in the properties of gypsum samples at curing times of 2 h and 1, 3, 7, and 14 days was studied. An addition of glass spheres up to 10 wt % reduces gypsum strength by 10–13% and density, by 16%, additive up to 20 wt % reduces strength by two times and density by 36–40%, and additive up to 50 wt % reduces strength by from five to six times and density by 80–85%, with the thermal conductivity coefficient decreasing to 0.236 W/m K. An addition of wollastonite 10–20 wt % increases the strength of gypsum samples by 13–16%, and addition of 50 wt % reduces the strength by two times. An addition of 0.5–1.5 wt % chopped basalt fibers increases strength by 10–16%, as well as the strength gain rate. Additions of wollastonite and basalt fibers practically do not change the density of gypsum samples, but increase the thermal conductivity coefficient to 0.320–0.373 W/m K.</p>\",\"PeriodicalId\":741,\"journal\":{\"name\":\"Polymer Science, Series D\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.5800,\"publicationDate\":\"2024-06-14\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Polymer Science, Series D\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S1995421224700679\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"Materials Science\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Polymer Science, Series D","FirstCategoryId":"1","ListUrlMain":"https://link.springer.com/article/10.1134/S1995421224700679","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Materials Science","Score":null,"Total":0}
Study of Gypsum Samples with Additions of Mineral Particles
The DSC method revealed endothermic effects (–613.9 J/g) during gypsum dihydrate heating associated with the heat absorption during the release of crystalline hydrate water in the range of 100–250°C during the heating process. Mass losses during water evaporation were determined by TGA and amount of up to 20%. The thermal conductivity coefficient of gypsum samples is 0.288 W/m K. The influence of mineral additives—glass spheres, wollastonite, and chopped basalt fiber—on changes in the properties of gypsum samples at curing times of 2 h and 1, 3, 7, and 14 days was studied. An addition of glass spheres up to 10 wt % reduces gypsum strength by 10–13% and density, by 16%, additive up to 20 wt % reduces strength by two times and density by 36–40%, and additive up to 50 wt % reduces strength by from five to six times and density by 80–85%, with the thermal conductivity coefficient decreasing to 0.236 W/m K. An addition of wollastonite 10–20 wt % increases the strength of gypsum samples by 13–16%, and addition of 50 wt % reduces the strength by two times. An addition of 0.5–1.5 wt % chopped basalt fibers increases strength by 10–16%, as well as the strength gain rate. Additions of wollastonite and basalt fibers practically do not change the density of gypsum samples, but increase the thermal conductivity coefficient to 0.320–0.373 W/m K.
期刊介绍:
Polymer Science, Series D publishes useful description of engineering developments that are related to the preparation and application of glues, compounds, sealing materials, and binding agents, articles on the adhesion theory, prediction of the strength of adhesive joints, methods for the control of their properties, synthesis, and methods of structural modeling of glued joints and constructions, original articles with new scientific results, analytical reviews of the modern state in the field.