The use of ground calcium carbonate (GCC) and other mineral fillers can enhance the performance, economy, and sustainability of concrete mixtures. Modifications to the conventional proportioning method in ACI 211.1 are needed to incorporate these materials. This guide describes GCC and dust-of-fracture aggregate mineral fillers, including their properties, characterization, and qualification, and effects on concrete properties and sustainability. Recommendations are provided for proportioning concrete mixtures with these materials.
Keywords:
aggregate mineral filler; dust-of-fracture; ground calcium carbonate; ground lime
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This report provides general information regarding the evaluation of corrosion damage in structures reinforced with grouted multistrand and bar tendons. A review of current practice is included along with the historical background. Specific potential problem areas for grouted tendons are discussed for each critical part of the tendon. Current methods for evaluating corrosion damage and typical repair schemes are included.
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Architectural precast concrete is a subcategory of concrete construction that involves the same basic entities as other concrete construction, but is cast in a plant and has a more decorative appeal by using color, texture, distinguished surface finishes, or all of these. This document outlines the responsibilities for various parties of the design/construction team for architectural precast concrete projects and does not necessarily apply to concrete or precast concrete in general.
Keywords:
architect; architectural precast concrete; construction manager; general contractor; owner; precaster; specialty structural engineer; structural engineer of record.
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The need to control volume change induced primarily by temperature change in mass concrete often requires thermal control of concrete. This report reviews these thermal control methods such as precooling, postcooling, and insulating systems. A simplified method for computing the temperature of freshly mixed concrete cooled by various systems is also presented.
Keywords:
cement content; coarse aggregate; creep; formwork; heat of hydration; mass concrete; modulus of elasticity; precooling; postcooling; pozzolan; restraint; specific heat; strain; stress; temperature rise; tensile strength; thermal conductivity; thermal diffusivity; thermal expansion; thermal gradient; thermal shock.
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This guide describes the technology and applications of fiber-reinforced shotcrete (FRS) with a focus on synthetic and steel macrofibers. It serves as a bridge between information given in documents reported by ACI Committee 506 and ACI Committee 544. Proportions of typical mixtures, batching, mixing, and application procedures are described, including modification of mixture proportions and equipment needed for FRS. General performance criteria of FRS, particularly postcracking flexural strength and toughness, are described along with other typical properties and benefits, such as increased resistance to shrinkage cracking and impact resistance. Corresponding test methods are also discussed. The document presents general FRS design considerations. Applications of FRS are described, including construction and repair of tunnel and mining linings, slope stabilization, retaining structures, fire-explosive-spalling-resistant linings, and architectural structures. The report also gives guidance on the specification and quality control of FRS.
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Posted by: pezhmankhan - 12-03-2021, 06:26 AM - Forum: Archive
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ASCE 7-22, Minimum Design Loads and Associated Criteria for Buildings and Other Structures
Edition: 2022 Publish Date: 2022 ISBN: 9780784483497 Published By: ASCE Related Links:
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ACI 562-21
Assessment, Repair, and Rehabilitation of Existing Concrete Structures - Code and Commentary
Possible source is as below:
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Posted by: poolmand - 12-01-2021, 07:01 AM - Forum: ACI
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ACI 310.1-20: Specification for Polished Concrete Slab Finishes
| Size: 3.2 MB| Format:PDF| Quality:Original preprint| Publisher: American Concrete Institute| Year: December 16, 2020 | ISBN: 1641951273
This is a Reference Specification that the Architect/Engineer can apply to any construction project involving polished concrete slab finishes by citing it in the Project Specifications. A mandatory requirements checklist and an optional requirements checklist are provided to assist the Architect/Engineer in supplementing the provisions of this Specification as required or needed by designating or specifying individual project requirements. The first section of this Specification covers general requirements for polished concrete slab finishes. The second section covers requirements for products and equipment, and the third section covers construction requirements. Provisions governing testing, evaluation, and acceptance of polished concrete slab finishes are included. This Specification for polished concrete slab finishes is applicable to both slabs-on-ground and suspended slabs.
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This document presents recommended methods and procedures for measuring, mixing, transporting, and placing heavyweight concretes that are used principally for radiation shielding in nuclear construction. Also covered are recommendations on cement, heavyweight aggregates, water, and admixtures. Mixture proportioning of heavyweight concrete is discussed. Mixing equipment, form construction, placing procedures, and methods of consolidation are described. Quality control, inspection, and testing are emphasized, and a list of references is included. Preplaced heavyweight concrete is not discussed in this version of 304.3R. It is covered in the 2004 version of the document.
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This Specification covers minimum requirements for the construction of pervious concrete pavement. This Specification covers materials, preparation, forming, lacing, finishing, jointing, curing, and quality control of pervious concrete pavement. Provisions governing testing, evaluation, and acceptance of pervious concrete pavement are included.
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