BSI对欧洲混凝土建筑标准进行了修订

BSI日前对BS EN 206 混凝土产品的规格、性能、生产和一致性标准进行了修订。此项标准适用于工地水泥浇筑、预铸框架以及建筑和市政工程的预铸框架产品。

       这项标准涵盖了所有类型的混凝土和几乎全部预铸混凝土种类。BS EN 206同时还包含用于道路铺面的混凝土，关于道路铺面混凝土，该标准引用欧洲混凝土路面标准对其进行另外的增补要求。

       修订后的标准强调混凝土的使用寿命要求达到甚至超过100年，这样才能保证在公平的基础上对其与其他建筑材料的耐久性进行比较。

BS EN 206包括：

l  混凝土的成分

l  新拌和硬化混凝土的特质以及它们的鉴定

l  混凝土成分的限制

l  混凝土的规格

l  新拌混凝土的运输

l  生产控制步骤

l  产品一致性的标准和评估

这项标准对于提供或需要关于预拌混凝土信息的建筑项目内涉及的所有人员都大有用处，包括工程承包商、专家、生产商、技术顾问和建筑工程师。

       BS EN 206的制定是在各方合作达成共识的基础上再结合专家意见。这些专家都是来自建筑产品行业，例如英国现拌混凝土协会、建筑工程师、建筑产品生产商、技术顾问和行业协会代表。

       BSI的建筑环境部门负责人安东尼.伯德说道，对于混凝土特性的需求取决于其最终用途。其中就包括防止外露混凝土离析的强度和最大骨料粒径。这些差异为技术顾问和生产商提供指南，让他们以BS EN 206进行选择。修订后的标准更为清晰明了，让选择过程也更为简单。

       BS EN 206的修订是BSI参与CEN/TC 104的结果。BS EN 206不包括混凝土生产和运输过程中保护工人的健康和安全要求。

European Standard for concrete structures is revised

BSI, the business standards company, has revised BS EN 206 Concrete - Specification, performance, production and conformity. The European Standard applies to concrete for structures cast in situ, precast structures, and structural precast products for buildings and civil engineering structures.

The standard covers all types of concrete and nearly all types of precast concrete*. BS 206 also covers concrete for pavements where there are additional complementary requirements cited in the European Standard for Concrete pavements.

The revision specifically addresses that concrete may be designed for a working life of up to and over 100 years. This ensures that when its sustainability credentials are compared to other building materials the comparison may be carried out on an equitable basis. 
 

BS EN 206 covers:

.         Constituents of concrete

.         Properties of fresh and hardened concrete and their verification

.         Limitations for concrete composition

.         Specification of concrete

.         Delivery of fresh concrete

.         Production control procedures

.         Conformity criteria and evaluation of conformity

The standard will be of use to all members of a construction project who provide or require information on ready mix concrete, including construction contractors, specialists, manufacturers, specifiers and structural engineers.

BS EN 206 was developed using a collaborative consensus-based process with input from experts within the construction product sector such as the British Ready Mix Concrete Association, as well as structural engineers, construction product manufacturers, specifiers and trade association representatives.

Anthony Burd, Head of Built Environment at BSI, said: “The characteristics of concrete that may be needed depends on its end use application. These can range from such things as strength, maximum aggregate size or consistency to visual concretes where is on display. With such an array of variations possible it is useful to have guidelines for the specifier and the producer to refer to. BS EN 206 can help with this, and now with the added clarity this amendment brings, this process is much easier.”

The amendment to BS 206 was a result of BSI’s participation in the CEN technical committee CEN/TC 104. BS EN 206 does not cover health and safety requirements for the protection of workers during production and delivery of concrete.