Introduction Chemical Abstracts Service (CAS), a division of the American Chemical Society, is the most authoritative and comprehensive source for chemical information. CAS databases, including CAS REGISTRYSM, the g...Introduction Chemical Abstracts Service (CAS), a division of the American Chemical Society, is the most authoritative and comprehensive source for chemical information. CAS databases, including CAS REGISTRYSM, the gold standard for substance information, are curated and quality-controlled by CAS scientists. Combining these databases with advanced search and analysis technologies, CAS delivers the most complete, cross-linked, and effective digital information environment for scientific research and discovery through such products as SciFinder, STN, STN Express, and STN AnaVistTM, as well as services, such as Science IP.展开更多
Chemical Abstracts(CA),a reputable international search tool,which involves the widest disciplinary field,collects the most literature types,offers the most searching ways,and has the most prodigious volumes,is edited...Chemical Abstracts(CA),a reputable international search tool,which involves the widest disciplinary field,collects the most literature types,offers the most searching ways,and has the most prodigious volumes,is edited and published by CAS-Chemical Abstracts in the USA.CA has reported more than 10 000 kinds of technology journals,technology reports,meeting papers,academic dissertations,data chronicles,technique reports,new books,and audiovisuals。展开更多
Chemical Abstracts(CA),a reputable international search tool,which involves the widest disciplinary field,collects the most literature types,offers the most searching ways,and has the most prodigious volumes,is edited...Chemical Abstracts(CA),a reputable international search tool,which involves the widest disciplinary field,collects the most literature types,offers the most searching ways,and has the most prodigious volumes,is edited and published by CAS-Chemical Abstracts in the USA.展开更多
The aim of this study was to create a foaming agent and then evaluate its performance.This foaming agent is made up of Sodium lauryl sulfate,Ethanol,Lauryl alcohol and Water.On aeration,the diluted foaming solution pr...The aim of this study was to create a foaming agent and then evaluate its performance.This foaming agent is made up of Sodium lauryl sulfate,Ethanol,Lauryl alcohol and Water.On aeration,the diluted foaming solution produces a stable foam whose properties,density,capacity and drainage were studied.The compressive strength,water absorption and density of foamed concrete were also studied.Test results show that the initial foam density is 104kg/m3 at an optimum dilution ratio of 1:40.Foamed concrete’s density can vary from 450kg/m3 to 1 950bkg/m3 and its compressive strength is in0.5~23 MPa.Compressive strength test results of this foaming agent are higher than those produced with EABASSOC foaming agent.According to ASTM 869-91,this chemical composition qualifies to be used as a foaming agent.展开更多
文摘Introduction Chemical Abstracts Service (CAS), a division of the American Chemical Society, is the most authoritative and comprehensive source for chemical information. CAS databases, including CAS REGISTRYSM, the gold standard for substance information, are curated and quality-controlled by CAS scientists. Combining these databases with advanced search and analysis technologies, CAS delivers the most complete, cross-linked, and effective digital information environment for scientific research and discovery through such products as SciFinder, STN, STN Express, and STN AnaVistTM, as well as services, such as Science IP.
文摘Chemical Abstracts(CA),a reputable international search tool,which involves the widest disciplinary field,collects the most literature types,offers the most searching ways,and has the most prodigious volumes,is edited and published by CAS-Chemical Abstracts in the USA.CA has reported more than 10 000 kinds of technology journals,technology reports,meeting papers,academic dissertations,data chronicles,technique reports,new books,and audiovisuals。
文摘Chemical Abstracts(CA),a reputable international search tool,which involves the widest disciplinary field,collects the most literature types,offers the most searching ways,and has the most prodigious volumes,is edited and published by CAS-Chemical Abstracts in the USA.
文摘The aim of this study was to create a foaming agent and then evaluate its performance.This foaming agent is made up of Sodium lauryl sulfate,Ethanol,Lauryl alcohol and Water.On aeration,the diluted foaming solution produces a stable foam whose properties,density,capacity and drainage were studied.The compressive strength,water absorption and density of foamed concrete were also studied.Test results show that the initial foam density is 104kg/m3 at an optimum dilution ratio of 1:40.Foamed concrete’s density can vary from 450kg/m3 to 1 950bkg/m3 and its compressive strength is in0.5~23 MPa.Compressive strength test results of this foaming agent are higher than those produced with EABASSOC foaming agent.According to ASTM 869-91,this chemical composition qualifies to be used as a foaming agent.