German Committee for Structural Concrete (DAfStb): Recommendations for the Use of DIN EN , DIN etc. — Heft , Beuth-Verlag Berlin, DIN DIN und DIN ; Deutscher Ausschuß für Stahlbeton, Heft , Beuth Verlag, Berlin, Beton-und Stahlbetonbau, Heft 1, , S . (E4 E6) cubes. ( mm) cylinders cylinders cubes. ( mm) cubes. ( mm). (DAfStb), Heft , Beuth,  Strauss, A.
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Beton — Festlegung, Eigenschaften, Herstellung und Konformit? In keeping with current practice in standards published by the International Organization for Standardization ISOa comma dafatb been used throughout as the decimal marker.
Contents Page Page Foreword to this standard. In case of doubt, the German-language original should be consulted as the authoritative text.
Veröffentlichungen von Prof. Dr.-Ing. H. S. Müller
Relationship between DIN EN and DINcodes of practice relating to concrete construction, standards for design and workmanship, standards and approvals for constituent materials, and test standards.
Grading curves for 8 mm maximum particle size. Grading curves for 16 mm maximum particle size. Grading curves for 32 mm maximum particle size. Grading curves for 63 mm maximum particle size.
IMB-Veröffentlichungen – Veröffentlichungen von Prof. Dr.-Ing. H. S. Müller
Maximum chloride content of concrete. Limiting values for composition and properties of concrete. 562 cement content for standardized prescribed concrete with cement of strength class 32,5 as specified in DIN EN and with a maximum aggregate size of 32 mm.
Additional control of constituent materials of high-strength concrete. Additional control of equipment for production of high-strength concrete. Additional control of production procedures and of properties of high-strength concrete. Design and construction — Part 2: Workmanship — Part 4: Supplementary specifications governing the production and conformity hedt precast elements This Part of the standard applies to in-situ and precast concrete, including precast elements, used for buildings and civil engineering works.
It is to be used in conjunction with DIN ENand is based on that standard, containing supplementary national specifications to take into account German climatic and geographic conditions, safety levels and established regional practices. Previous editions DIN Page 4 DIN Page 5 DIN This standard does not cover concrete with porous cement paste, concrete with a maximum aggregate size of 4 mm or less with the exception geft cement mortar as specified in subclause 5.
This hefg incorporates, by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text, and the titles of the publications are listed below. For dated references, subsequent amendment geft or revisions of any of these publications apply to this standard only when incorporated in it by amendment or revision.
For undated references, the latest edition of the publication referred to applies including any amendments. The clause is supplemented by the following: Determination of chloride, carbon dioxide and alkali content of cement DIN EN Cement — Composition, specifications and conformity criteria — Part 1: Test sieves of metal 5526 cloth ISO Test sieves of perforated metal plate ISO I German Federal Law Gazettep.
Federal Law Gazette I, No. The following concepts are added: NOTE See table 6. Page 8 DIN In particular, corrosion due to wear is now taken into account see 7. The moisture conditions relate to those in the concrete cover to reinforcement or other embedded metal, but in many cases, conditions in the concrete cover dasftb be hwft as being the same as those of the ambient conditions.
However, this hef not be the case if there is a barrier between the concrete and its environment. Dry or permanently wet Components in rooms with normal air humidity including kitchens, bathrooms, laundries in residential buildings ; concrete permanently submerged in water Wet, rarely dry Moderately humid Parts of water tanks; foundation members Components to which outside fafstb constantly or frequently has access heftt.
In exposure class XA3 or under environmental actions outside the limits of table 2 of DIN ENif other aggressive chemicals are present, ground water or soil is chemically polluted, or there is a combination of high water velocity and chemicals from table 2 of DIN ENthe requirements relating to concrete or protective measures given in subclause 5.
See for the occurrence and effects of chemically aggressive soil and ground water. Paragraph 2 of table 2 is supplemented by the following: A special study may be dispensed with if no value lies in the upper quarter dafsbt pH, in the lower quarter.
Page hetf DIN Page 12 DIN In cases of doubt, the water shall be examined for its suitability for use in concrete production.
For standardized prescribed concrete, the following restrictions shall apply: The composition of the aggregate is characterized by the grading curves or characteristic values described in Annex L.
The assessment and use of aggregate which is known to contain or which cannot be ruled out to contain harmful quantities of alkali-soluble silica, and any counteractive action the concrete may require, are governed by DAfStb-Richtlinie Alkalireaktion im Beton.
Aggregate known not to be alkali-soluble shall be used for production of high-strength concrete. Page 13 DIN DAfStb-Richtlinie Beton mit rezykliertem Hfet shall be taken into account when using recycled aggregate. Expanded clay and expanded slate conforming to DIN may be used as lightweight aggregate for lightweight concrete. The use of recycled water is not permitted for production of high-strength concrete.
Subject to the specifications of subclause 9. Type II additions as specified in sublause 5.
The suitability of the k-value concept is established for fly ash and silica fume. If cement containing silica fume is used as the main constituent, silica fume shall not also be used as an addition.
For prestressed concrete in which the tendons are to be in direct contact with the concrete, only fly ash and silica fume or inert mineral filler to DIN and pigments known not to have an inadvertent effect on prestressing steel shall be used as additions.
The actual value of k depends on the specific addition. If fly ash or silica fume is taken into account under the conditions stated in darstb 5. When ueft concrete with a high sulfate resistance, a mixture of cement and fly ash may be used instead of high-sulfate cement to DIN providing the following conditions are met: If silica fume is taken into account when calculating the minimum cement content, the latter may be reduced to the level specified in line 4 of hfet F. Page 15 DIN If both fly ash and silica fume are taken dafztb account when calculating the minimum cement content, the latter may be reduced to the level specified in line 4 of tables F.
The specifications of subclause 5. The use of fly ash and silica dfastb in combination is not permitted for other types of cement. A specific check of the admixture content is not necessary in cases heftt concrete contains more than one type of admixture and the total admixture content is not more than 60 g per kilogram of cement including the additions that are taken into account in calculations of the cement content.
For high-strength heeft, the maximum permitted content of plastifying admixtures shall be 70 g per kilogram or 70 ml per kilogram of cement. When more than one type of admixture is used, the total admixture content shall be not more than 80 g per kilogram or 80 ml per kilogram of cement. The wording of the note is replaced as follows: Page 16 DIN Maximum chloride content of concrete Concrete use Not containing steel reinforcement or other embedded metal except corrosion-resisting lifting devices Containing steel reinforcement or other embedded metal Containing prestressing steel reinforcement Where type II additions are used and are taken into account when calculating the cement content, the chloride content is expressed as the percentage chloride ions by mass of cement plus total mass of additions that are taken into account.
A fourth paragraph is added: The requirements relating to chloride content as given in table 10 are deemed satisfied if the chloride content of each constituent material except aggregate and cement of type CEM III meets the requirements for hefg lowest class in the provision hefft to the constituent material.
DIN 增强、钢筋和预 应力混凝土 第2部分 混凝土 规范性能生产和适用性_百度文库
The following limiting values shall apply for the chloride content of aggregate: In accordance with DINthe following shall apply: Chloride content class Maximum chloride content by mass of cement a 5. The following is added to the end of the last paragraph: The subclause is supplemented by the following: Requirements relating to concrete composition and properties are given in tables F.
In addition, the following provisions shall apply: The values in tables F.
The ranges of application of cement types are given in tables F. Page 17 DIN The maximum permitted ultrafines content from table F.
The maximum permitted ultrafines content from tables F. Where concrete is exposed to chemical attack of exposure class XA3 or higher, or to fast flowing water combined with chemical attack as set out in table 2 of DIN ENmeasures shall be taken to protect the concrete such as the application of protective coatings or permanent cladding unless expert opinion proposes an alternative solution.
In the presence of aggressive chemicals other than those given in table 2 of DIN EN or if the substrate is chemically contaminated, the impact of the chemical attack shall be investigated and precautionary action taken, where necessary. If concrete for loadbearing elements is required to be placed under water, it shall generally be of a soft consistence cf.
The fly ash content may be included in accordance with subclause 5. During placing, the concrete shall flow as a coherent mass so as to be of dense structure even without compaction. The ultrafines content may be greater than the limiting values specified in subclause 5. Where concrete with unsealed surfaces due to come into contact with fluid including liquefied gases or paste-like water pollutants is classed as being at risk according to the terms of the Gesetz zur Ordnung des Wasserhaushalts, the concrete shall comply with the requirements of this standard and the provisions laid down in DAfStb-Richtlinie Betonbau beim Umgang mit wassergef?
Further information is given in DAfStb-Heft Page 18 DIN Tables 22 to 24 and clauses H. Preferred methods are the flow diameter test and, for stiffer types of concrete, the degree of compactibility.