ASTM C171-2007 养护水泥用薄板材的标准规范

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                   【英文标准名称】:     Standard Specification for Sheet Materials for Curing Concrete            【原文标准名称】:     养护水泥用薄板材的标准规范            【标准号】:     ASTM C171-2007            【标准状态】:     现行            【国别】:                 【发布日期】:     2007    【实施或试行日期】: 【发布单位】: 美国材料与试验协会(US-ASTM)【起草单位】: C09.22【标准类型】: (Specification)【标准水平】: ()【中文主题词】: 护理;集料;混凝土;建筑;施工材料;薄板材【英文主题词】: concrete curing materials;  polyethylene film;  sheet material for curing concrete;  curing paper;  white burlap-polyethylene sheet【摘要】: 1.1 This specification covers materials in sheet form used for covering the surfaces of hydraulic cement concrete to inhibit moisture loss during the curing period and, in the case of the white reflective type materials, to also reduce temperature rise in concrete exposed to radiation from the sun. The following types are included:1.1.1  Curing Paper.1.1.1.1. Regular.1.1.1.2 White.1.1.2  Polyethylene Film: 1.1.2.1 Clear.1.1.2.2 White Opaque.1.1.3 White-Burlap-Polyethylene Sheet1.2 The values stated in SI units are to be regarded as the standard. Inch-pound units are provided in parentheses for information only. Note 1 This specification does not cover materials such as burlap, cotton mats, or rugs used with additional applications of water to maintain a water-saturated environment on such surfaces. Procedures employing these materials are discussed in ACI 308R. Sheet materials having additional characteristics such as insulating properties and the ability to carry additional water to the curing region are commercially available but are not currently addressed in this specification.1.3 The text of this standard references notes and footnotes which provide explanatory material. These notes and footnotes shall not be considered as requirements of the standard.【中国标准分类号】: Q14【国际标准分类号】: 91_100_30【页数】: 2P.;A4【正文语种】:           
         

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