ACI 302.1R-04 PDF

Guide for Concrete Floor and Slab Construction. ACI R FOREWORD. The quality of a concrete floor or slab is highly dependent on achieving a. Veja grátis o arquivo ACI R 04 Guide for Concrete Floor and Slab Construction enviado para a disciplina de Concretos Especiais Categoria. Home · Standards & Codes · ACI; R Guide for Concrete Floor and Slab Construction. R Guide for Concrete Floor and Slab Construction.

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Callas Robert J Douglas W.

Refer to the latest edition 3021r-04 ACI R for a detailed discussion of cracking in reinforced and nonreinforced concrete slabs. Other conditions to be avoided that can cause craze cracking are: Failure to address this issue can contribute to undesirable characteristics in the wearing surface such as cracking, low resistance to wear, dusting, scaling, high or low spots, poor drainage, and increasing the potential for curling.

Adequate supervision and acii are required for job operations, particularly those of finishing.

Slabs cast upon a base which has a low coefficient of friction, such as a fine-graded crushed stone. Refer to the latest edition of ACI R for a detailed discussion of shrinkage and curling in slabs-on-ground. Appears on pages s: Enviado por Estudante PD flag Denunciar.

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International Concrete Abstracts Portal

Refer to the latest edition of ACI R for a detailed discussion of shrinkage and curling in slabs-on-ground. The American Concrete Institute disclaims any and all responsibility for the stated principles. Niemitalo Fricks Mark E.

Refer to Section 5. They are similar to mud cracking in shape and in generation. Ault Edward Charles M. Concrete floor slabs employing portland cement, regardless of slump, will start to experience a reduction in volume as soon as they are placed. The International Concrete Abstracts Portal is an ACI 302.1r-04 collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.

R Guide for Concrete Floor and Slab Construction

This is especially important when weather conditions are adverse. Contraction joints sawn early enough; 4. Concrete floor slabs employing portland cement, regardless of slump, will start to experience a reduction in volume as soon as they are placed. Cover with damp burlap or with white polyeth- ylene sheeting Section 9.

Sprinkling water onto the surface of a slab during finishing.

Even with the best floor designs and proper construction, it is unrealistic to expect crack-free and curl-free floors. Contraction joints not spaced too far apart Section 3. Properties of the surface are determined by the mixture proportions and the quality of the concreting and jointing opera- tions.

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ACI 302.1R 04 Guide for Concrete Floor and Slab Construction MyCivil.ir

Failure to address this issue can contribute to undesirable characteristics in the wearing surface such as cracking, low resistance to wear, dusting, scaling, high or low spots, poor drainage, and increasing the potential for curling. A newer version of this document exists.

Cracking along edges where forms are not rigid; 4. Moreover, because the drying and cooling rates at the top and bottom of the slab will never be the same, the shrinkage will vary throughout the depth, causing the as-cast shape to be distorted 302.1r-04 reduced in volume. Thus, drying shrinkage of concrete containing water reducers can still cause unsightly cracking, unless the following good practices are employed: Cool aggregates and mixing water 302.1r-40 mixing; and 5.

Damage from form removal. To prevent crazing, curing procedures should begin imme- diately, within minutes after final finishing, particularly after hard troweling.

Ayers Jerome Kenneth L. Overworking and overtroweling, especially when the surface is too wet Sections 8.