ACI – PDF Standards Store

ACI SP 362 2024

Sun, 20 Oct 2024 10:30:51 +0000

Sponsored by: ACI, RILEM, Université de Sherbrooke, Université Toulouse III, CRIB, LMDC Toulouse In July of 1983, the Canada Centre for Mineral and Energy Technology of Natural Resources Canada (CANMET), in association with the American Concrete Institute (ACI) and the U.S. Army Corps of Engineers, sponsored a 5-day international conference in Montebello, Quebec, Canada, on the use of fly ash, silica fume, slag, and other mineral by-products in concrete. The conference brought together representatives from industry, academia, and government agencies to present the latest information on these materials and to explore new areas of needed research. Since then, eight other such conferences have been held around the world (Madrid, Trondheim, Istanbul, Milwaukee, Bangkok, Madras, Las Vegas, and Warsaw). The 2007 Warsaw Conference was the last in this series. In 2017, due to the renewed interest in alternative and sustainable binders and supplementary cementitious materials, a new series was launched by Sherbrooke University (Professor Arezki Tagnit-Hamou), American Concrete Institute (ACI), and the International Union of Laboratories and Experts in Construction Materials, Systems and Structures (RILEM)—in association with a number of other organizations in Canada, the United States, and the Caribbean—sponsored the 10th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete (ICCM2017). The conference was held October 2-4, 2017, in Montréal, Canada. The conference proceedings, containing 50 reviewed papers from more than 33 countries, were published as ACI SP-320. In 2021, UdeS, ACI, and RILEM, in association with Université de Toulouse and a number of other organizations in Canada, the United States, and Europe, sponsored the 11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete (ICCM2021). The conference was scheduled to take place in Toulouse, but due to COVID, it was held online June 7-10, 2021. The conference proceedings, containing 53 reviewed papers from more than 21 countries, were published as ACI SP-349. In 2024, the conference was finally held in-person in Toulouse from June 23 to 26, 2024, with the support of UdeS, ACI, and RILEM in association with Université de Toulouse (Martin Cyr) and a number of other organizations in Canada, the United States, and Europe. The purpose of this international conference was to present the latest scientific and technical information in the field of supplementary cementitious materials and novel binders for use in concrete. The new aspect of this conference is to highlight advances in the field of alternative and sustainable binders and supplementary cementitious materials for the transition to low carbon concrete. The conference proceedings, containing 78 reviewed papers from more than 25 countries, have been published as ACI SP-362. Thanks are extended to the members of the International Scientific Committee who reviewed the papers. The cooperation of the authors in accepting the reviewers’ suggestions and revising their manuscripts accordingly is greatly appreciated. The involvement of the steering committee and the organizing committee is gratefully acknowledged. Special thanks go to Chantal Brien (Université de Sherbrooke) for the administrative work associated with the conference and for processing the manuscripts for both the ACI proceedings and the supplementary volume.

PDF Catalog

PDF Pages	PDF Title
1	Frontmatter
5	Table of Contents
12	Interface Properties Between Reactive Magnesia Cement Matrix and GFRP Rebar
29	The Influence of TiO₂ Nanoparticles on the Smart Properties of Alkali-Activated Materials
49	Experimental Study on a Low-Carbon Pervious Concrete Based on Alkali-Activated Binder and Recycled Aggregates
60	Multiscale Mechanical Investigation of Ternary Binders Incorporating Calcined Clay and Slag
75	Effect of Supplementary Cementitious Materials (SCMs) on the Structural Build-Up of Cement Pastes
92	Structural Geopolymer Mortars with Maximum Amounts of Construction and Demolition Wastes
108	It’s not Rocket Science – Multiple SCM Blends give High Durability AND Low Carbon
119	Rheology of Stabilized Earth-Based Paste
138	Improving Sulfate Resistance in Alkali-Activated Self-Compacted Concrete: Utilizing Precursor Combinations and Dry-Powder Activators as a Novel Approach for Enhanced Durability
158	Workability of Low-Clinker Mortars with Recycled Fine Aggregatesand Different Polymers as Superplasticizer
175	Mechanical Performance and Microstructual Investigation of Bincary and Ternary Lime Binders with Silica Fume and Metakaolin
190	Control of Physical Deterioration of Foamed Geopolymers Exposed to High Temperature
200	Replacement of Natural Sand with Manufactured Sand While Maintaining Packing Density
213	Formulation of Self-Compacting Concrete with Limestone Tuff and Study of the Parameters Influence on the Responses
226	Evaluation of the AC Conductivity and the Percolation State in Cementitious Materials Based on Alumina Slag
251	Influence of the Polymer Structure on the Rheology of Portland Cement and LC³ Pastes Containing Superplasticizers
260	Machine Learning Models for Predicting Rheological Properties of Self-Consolidating Concrete (SCC)
279	Effects of Si/AlMolar Ratio on the Structure and Properties of Metakaolin-Based Alkali Activated Binders
294	Hydration Mechanism of MgO-Nesquehonite Blends
303	Effect of Milling on the Reactivity of Mixed Recycled Aggregate Powder as an SCM
313	Linking Water Demand and Surface Area of Calcined Palygorskite
324	Rheological Evaluation of High Filler – Low Water Ternary Slag Cement Concrete with Low Binder Intensity
332	Investigating the Potential of Limestone and Calcined Clay as a Substitute for Fly Ash in Strain-Hardening Cementitious Composites (SHCC)
342	Performance of Calcium Nitrate as Accelerator for Cement Blended with Blast Furnace Slag
355	Feasibility of Using Natural Pozzolan-Limestone-Based Cement Composite for 3D Printing
369	Solid Phase Analysis of Hydrated MgO/Nesquehonite Pastes with Silica or Metakaolin Addition
377	Remediated Thermal-Treated Soil and Tar-Containing Asphalt as Secondary Filler and Sand in Self-Compacting Concrete
387	Early-Age Shrinkage, Hydration Kinetics, and Workability of Mortars Containing Metakaolin and Limestone Powder
404	Direct and Delayed Dosing: A New Approach to Quantify Ineffective Superplasticizers
423	Quantitative Analysis of Fly Ash Hydration Products formed in Sulfate Environment
443	Assessing Fly Ash Beneficiation’s Process Effect on Concrete Performance
455	Utilization of Electric Arc Furnace Slag for CO₂ Storage in Mortar using Pressurized CO₂ Curing Condition
464	Predicting the Microstructure Stabilization Time from Electrical Resistivity Measurements
472	Ternary Cement Mixtures and Marble and Granite Waste in Self-Compacting Concrete: an Evaluation of Fresh and Carbonation Properties
485	Combined Effect of Polycarboxylate Ether and Phosphonated Superplasticizers in Limestone Calcined Clay Cement
498	Hardening and Shrinkage Kinetics of Geopolymers
510	A Novel Clinker-Free Binary Paste with Biomass Fly Ash and Slag
518	Valorization of Harbour Dredging Sediments as Supplementary Cementitious Materials
531	Hydration Properties and Physical Characteristics of Belite Cements
546	Particle Interaction in Metakaolin Suspensions
558	On the Formation of Al/Fe-AFm Solid Solutions During Hydration of Fe-Rich Binders
569	Upcycling Basic Oxygen Furnace (BOF) Slag into a Carbon Negative Supplementary Cementitious Material (SCM) through Mineral Carbonation
581	Low-Carbon Concrete Achieved through Rheology Modification
596	Development of Bauxite Residue and Class F Fly Ash Based Geopolymer Concrete
605	Leaching of Magnesium Phosphate Cement Pastes: Influence of the Mg/P Molar Ratio
621	Rheology and Early-Age Reactivity of Calcined Kaolinite
626	Effect of Carbonation on Mechanical Properties and Microstructure of One-Part-Geopolymer based on Thermo-Mechanical-Synthesis Sediments Fy Ash Mix
641	Influence of Calcination Temperature on the Properties of Clay
650	Marine Dredged Sediments as a Partial Alternative to Sand in Cementitious Systems Using Particle Packing Optimization
662	High Iinitial Strength Low Clinker Ternary Binders for Walls with Integrated Formwork
682	Clay Calcination Methods and Composition Impacts on Calcined Clay Properties
693	Use of High SO₃ Coal Ash as Supplementary Cementitious Materials in Concrete
712	Experimental-Numerical Studies of Moisture-Toluene Buffering Capacity of HLC
731	Early Reactivity Assessment of Calcined Clays and the Impact of Secondary Phases
744	Insights into Phase Assemblage in MgO-Al₂O₃-(SiO₂)-CO₂ Systems
749	Enhancing Reactivity of Calcined Clays for Sustainable Cement Production through Optimization of Rotary Kiln Parameters
774	Chloride Diffusion in Geopolymers Containing Phase Change Materials
785	Durability of Concretes with Low Environmental Emissions Based on Ternary Binders: Corrosion Resistance and Positioning with Respect to the Performance Approach
794	Assessing Pozzolanic Reactivity of Reclaimed Fired Clay Roof Tiles and Bricks in Presence of Ground Limestone
805	Impact of the Type of Binder on the Properties of Deep Soil Mixing Materials
824	Effect of Sorghum Shives & Wheat Straw on the Properties of Compressed Earth Blocks
839	Investigations of Ettringite Morphology with the Use of Different Retarders in CSA/OPC Blends
852	Valorization of Primary Aluminum Industry By-Product in Cement Materials
865	Utilization of Waste CO₂ Generated Vaterite in Blended Cements
882	Study on Use of MSWI Fly Ash with Mainstream Supplementary Cementitious Materials
898	Resistance to Chloride Ingress of Eco-Efficient Concrete Proportioned through Particle Packing Models (PPMs)
912	Enhancing the Journey towards Concrete Net Zero: The Role of Eco-Efficient Concrete, Particle Packing Models, and Limestone Fillers
927	Efficiency of Using Recycled Coarse Aggregate for Internal Curing of Blended Cement Concretes
941	Comparative Study of the Mechanical and Durability Performance of Low Carbon Concrete Matrices with Alternative SCMs
952	Harvested Fly Ash for Supplementary Cementitious Materials
964	Investigation of the CO₂ Sequestration by Accelerated Carbonation as a Function of the Composition, Origin, Production Process, and Age of Recycled Concrete Aggregates
977	Metals in Mine Tailings and Prospects for Use in Cementitious Materials
987	Effect of Superplasticizer on Water Availability and Rheological Properties of Cement Paste Containing Calcined Clay
997	Mechanical Behavior of Concrete Based on Aquaculture Co-Products
1009	Data Mining HeidelbergMaterials Database: Portland Cement – Limestone Systems Optimization with Machine Learning
1017	Chemical Reactivity Assessment of Glass Powder in R³ Method Synthetic Concrete Pore Solution by Accelerated
1031	Effect of Biochar on the Microstructure and MechanIical Response of Cement Paste
1044	Mechanical Properties and Freezing and Thawing Behavior of 3D Printing Concrete Containing Recycled Fine Aggregates from Construction and Demolition Waste

ACI 548.4M 2011

Sun, 20 Oct 2024 10:30:50 +0000

ACI SPEC-548.4M-11 Specification for Latex-Modified Concrete Overlays (Metric)

Published By	Publication Date	Number of Pages
ACI	2011	12

ACI 548.4 2011

Sun, 20 Oct 2024 10:30:49 +0000

This Reference Specification covers styrene-butadiene latex-modified concrete (LMC) as an overlay on concrete bridge decks and other structures. It applies to both new construction and rehabilitation of existing structures. It includes certification requirements of the latex products, storage, handling, surface preparation, mixing, application, and limitations. Keywords: bridge decks; latex-modified concrete; mixing; resurfacing.

ACI 304R 2000 RA2009 ES

Sun, 20 Oct 2024 10:30:48 +0000

This is a licensed translation and has not been reviewed or approved by ACI. This guide presents information on the handling, measuring, and batching of all the materials used in making normalweight, lightweight structural, and heavyweight concrete. It covers both weight and volumetric measuring; mixing in central mixute plants and truck mixers; and concrete placement. Keywords: batching; continuous mixing; conveying; heavyweight concretes; lightweight concretes; materials handling; mixing; placing; preplaced aggregate concrete; pumped concrete; tremie concrete; volumetric measuring.

ACI 440.6 2008 RA2017 RA2022 SI

Sun, 20 Oct 2024 10:30:47 +0000

This Material Specification covers provisions governing testing, evaluation, and acceptance of carbon and glass fiber-reinforced polymer (FRP) bars used as reinforcement for concrete. Keywords: carbon fiber; concrete; concrete construction; FRP reinforced concrete; fiber-reinforced polymer reinforcement; glass fiber; specification.

PDF Catalog

PDF Pages	PDF Title
3	TITLE PAGE
4	SECTION 1—SCOPE SECTION 2—REFERENCED DOCUMENTS 2.1—ASTM standards 2.2—ACI report SECTION 3—TERMINOLOGY 3.1—Definitions 3.2—Definitions of terms specific to thisspecification
5	SECTION 4—CLASSIFICATION SECTION 5—ORDERING INFORMATION SECTION 6—MATERIALS AND MANUFACTURE 6.1—Fibers 6.2—Matrix resins 6.3—Fillers and additives 6.4—Manufacturing process SECTION 7—PHYSICAL PROPERTIES 7.1—Fiber content 7.2—Glass transition temperature 7.3—Bar sizes
6	SECTION 8—MECHANICAL PROPERTIES 8.1—Tensile strength 8.2—Tensile modulus of elasticity 8.3—Shear strength (perpendicular to bar) 8.4—Ultimate tensile strain 8.5—Bond strength SECTION 9—DURABILITY PROPERTIES 9.1—Moisture absorption 9.2—Resistance to alkaline environment 9.3—Longitudinal wicking
7	SECTION 10—OTHER REQUIREMENTS 10.1—Bend radius 10.2—Strength of bends SECTION 11—SAMPLING 11.1—Sampling frequency and number ofspecimens 11.2—Methods of sample selection SECTION 12—REJECTION SECTION 13—PRODUCT CERTIFICATION
8	SECTION 14—MARKINGS

ACI 117 2010 RA2015 wERRATA20170627

Sun, 20 Oct 2024 10:30:46 +0000

Specification synopsis: This specification provides standard tolerances for concrete construction and materials. This document is intended to be used by specification writers and ACI committees writing standards as the reference document for establishing tolerances for concrete construction and materials. Commentary synopsis: This report is a commentary on the “Specification for Tolerances for Concrete Construction and Materials (ACI 117).” It is intended to be used with ACI 117 for clarity of interpretation and insight into the intent of the committee regarding the application of the tolerances set forth therein. Keywords: architectural concrete; concrete; construction; drilled piers; formwork; foundation; mass concrete; pier; precast concrete; prestressed concrete;reinforced concrete; reinforcement; specification; splice; tilt-up concrete; tolerances.

PDF Catalog

PDF Pages	PDF Title
3	TITLE PAGE
4	CONTENTS
5	INTRODUCTION
7	SECTION 1—GENERAL REQUIREMENTS 1.1—Scope 1.2—Requirements
9	1.3—Definitions
13	1.4—Referenced standards
15	SECTION 2—MATERIALS 2.1—Reinforcing steel fabrication and assembly
19	2.2—Reinforcement location
24	2.3—Placement of embedded items, excluding dowels in slabs-on-ground
25	2.4—Concrete batching 2.5—Concrete properties
27	SECTION 3—FOUNDATIONS 3.1—Deviation from plumb
28	3.2—Deviation from location
30	3.3—Deviation from elevation 3.4—Deviation from plane
31	3.5—Deviation from cross-sectional dimensions offoundations
33	SECTION 4—CAST-IN-PLACE CONCRETE FOR BUILDINGS 4.1—Deviation from plumb
35	4.2—Deviation from location
36	4.3—Not used 4.4—Deviation from elevation
37	4.5—Deviation from cross-sectional dimensions
39	4.6—Deviation from formed opening width or height 4.7—Deviation from relative elevations or widths for stairs 4.8—Deviation from slope or plane
46	4.9—Sawcut depth in slab-on-ground
47	SECTION 5—CAST-IN-PLACE CONCRETE AT INTERFACE WITH PRECAST CONCRETE (EXCEPT TILT-UP CONCRETE) 5.1—Deviation from elevation—cast-in-place concrete
49	5.2—Deviation from location—cast-in-place concrete
50	5.3—Deviation from dimension—cast-in-place concrete
51	5.4—Deviation from plane at bearing surface—cast-inplaceconcrete measured over length or width ofbearing surface
53	SECTION 6—MASONRY
55	SECTION 7—CAST-IN-PLACE, VERTICALLY SLIPFORMED BUILDING ELEMENTS 7.1—Deviation from plumb for buildings and cores 7.2—Horizontal deviation
56	7.3—Cross-sectional dimensions 7.4—Openings through elements 7.5—Embedded plates 7.6—Deviation from plumb for slipformed and jumpformedsilos
57	SECTION 8—MASS CONCRETE 8.1—Deviation from plumb 8.2—Horizontal deviation 8.3—Vertical deviation 8.4—Cross-sectional dimension 8.5—Deviation from plane
59	SECTION 9—CANAL LINING 9.1—Horizontal deviation 9.2—Vertical deviation 9.3—Cross-sectional dimensions
61	SECTION 10—MONOLITHIC WATER-CONVEYING TUNNELS, SIPHONS, CONDUITS, AND SPILLWAYS 10.1—Horizontal deviation 10.2—Vertical deviation 10.3—Cross-sectional dimensions 10.4—Deviation from plane
63	SECTION 11—CAST-IN-PLACE BRIDGES 11.1—Deviation from plumb 11.2—Horizontal deviation 11.3—Vertical deviation 11.4—Length, width, or depth of specified elements
64	11.5—Deviation from plane 11.6—Deck reinforcement cover 11.7—Bearing pads
65	SECTION 12—EXTERIOR PAVEMENTS AND SIDEWALKS 12.1—Horizontal deviation 12.2—Vertical deviation of surface
67	SECTION 13—CHIMNEYS AND COOLING TOWERS 13.1—Deviation from plumb 13.2—Outside shell diameter 13.3—Wall thickness
69	SECTION 14—CAST-IN-PLACE NONREINFORCED PIPE 14.1—Wall thickness 14.2—Pipe diameter 14.3—Offsets 14.4—Surface indentations 14.5—Grade and alignment 14.6—Concrete slump
71	SECTION 15—TILT-UP CONCRETE 15.1—Panel forming 15.2—Deviation from plumb
72	15.3—Deviation from elevation 15.4—Deviation from location 15.5—Deviation from slope or plane
73	15.6—Deviation from relative widths
75	NOTES TO SPECIFIER General notes
77	FORWORD TO CHECKLISTS MANDATORY REQUIREMENTS CHECKLIST
78	OPTIONAL REQUIREMENTS CHECKLIST

ACI 117M 2010 RA2015 wERRATA20170627

Sun, 20 Oct 2024 10:30:46 +0000

PDF Catalog

PDF Pages	PDF Title
4	CONTENTS
5	INTRODUCTION
7	SECTION 1—GENERAL REQUIREMENTS 1.1—Scope 1.2—Requirements
9	1.3—Definitions
13	1.4—Referenced standards
15	SECTION 2—MATERIALS 2.1—Reinforcing steel fabrication and assembly
19	2.2—Reinforcement location
24	2.3—Placement of embedded items, excluding dowels in slabs-on-ground
25	2.4—Concrete batching 2.5—Concrete properties
27	SECTION 3—FOUNDATIONS 3.1—Deviation from plumb
28	3.2—Deviation from location
30	3.3—Deviation from elevation 3.4—Deviation from plane
31	3.5—Deviation from cross-sectional dimensions offoundations
33	SECTION 4—CAST-IN-PLACE CONCRETE FOR BUILDINGS 4.1—Deviation from plumb
35	4.2—Deviation from location
36	4.3—Not used 4.4—Deviation from elevation
37	4.5—Deviation from cross-sectional dimensions
39	4.6—Deviation from formed opening width or height 4.7—Deviation from relative elevations or widths for stairs 4.8—Deviation from slope or plane
46	4.9—Sawcut depth in slab-on-ground
47	SECTION 5—CAST-IN-PLACE CONCRETE AT INTERFACE WITH PRECAST CONCRETE (EXCEPT TILT-UP CONCRETE) 5.1—Deviation from elevation—cast-in-place concrete
49	5.2—Deviation from location—cast-in-place concrete
50	5.3—Deviation from dimension—cast-in-place concrete
51	5.4—Deviation from plane at bearing surface—cast-inplaceconcrete measured over length or width ofbearing surface
53	SECTION 6—MASONRY
55	SECTION 7—CAST-IN-PLACE, VERTICALLY SLIPFORMED BUILDING ELEMENTS 7.1—Deviation from plumb for buildings and cores 7.2—Horizontal deviation
56	7.3—Cross-sectional dimensions 7.4—Openings through elements 7.5—Embedded plates 7.6—Deviation from plumb for slipformed and jumpformedsilos
57	SECTION 8—MASS CONCRETE 8.1—Deviation from plumb 8.2—Horizontal deviation 8.3—Vertical deviation 8.4—Cross-sectional dimension 8.5—Deviation from plane
59	SECTION 9—CANAL LINING 9.1—Horizontal deviation 9.2—Vertical deviation 9.3—Cross-sectional dimensions
61	SECTION 10—MONOLITHIC WATER-CONVEYING TUNNELS, SIPHONS, CONDUITS, AND SPILLWAYS 10.1—Horizontal deviation 10.2—Vertical deviation 10.3—Cross-sectional dimensions 10.4—Deviation from plane
63	SECTION 11—CAST-IN-PLACE BRIDGES 11.1—Deviation from plumb 11.2—Horizontal deviation 11.3—Vertical deviation 11.4—Length, width, or depth of specified elements
64	11.5—Deviation from plane 11.6—Deck reinforcement cover 11.7—Bearing pads
65	SECTION 12—EXTERIOR PAVEMENTS AND SIDEWALKS 12.1—Horizontal deviation 12.2—Vertical deviation of surface
67	SECTION 13—CHIMNEYS AND COOLING TOWERS 13.1—Deviation from plumb 13.2—Outside shell diameter 13.3—Wall thickness
69	SECTION 14—CAST-IN-PLACE NONREINFORCED PIPE 14.1—Wall thickness 14.2—Pipe diameter 14.3—Offsets 14.4—Surface indentations 14.5—Grade and alignment 14.6—Concrete slump
71	SECTION 15—TILT-UP CONCRETE 15.1—Panel forming 15.2—Deviation from plumb
72	15.3—Deviation from elevation 15.4—Deviation from location 15.5—Deviation from slope or plane
73	15.6—Deviation from relative widths
75	NOTES TO SPECIFIER General notes
77	FORWORD TO CHECKLISTS MANDATORY REQUIREMENTS CHECKLIST
78	OPTIONAL REQUIREMENTS CHECKLIST

ACI 122.2 2024

Sun, 20 Oct 2024 09:56:20 +0000

This Code prescribes minimum design and construction requirements for energy efficiency of building envelopes of new buildings and additions to buildings. It applies to buildings having concrete walls, roofs, or floors; masonry walls; and masonry veneer, including veneer attached to frame walls as part of the building envelope. It also provides minimum thermal properties for these assemblies for code compliance. This Code is applicable to low-rise residential buildings that use either electricity from any generation source or fossil fuel. It can be used with applicable energy codes and standards such as the International Energy Conservation Code (IECC). Keywords: energy efficiency; specific heat; thermal conductivity; thermal diffusivity; thermal resistance; thermal transmittance.

PDF Catalog

PDF Pages	PDF Title
3	TITLE PAGE
4	PREFACE
5	CHAPTER 1—GENERAL
7	CHAPTER 2—NOTATION AND DEFINITIONS
9	CHAPTER 3—REFERENCED STANDARDS
11	CHAPTER 4—GENERAL REQUIREMENTS
12	CHAPTER 5—PRESCRIPTIVE METHOD
15	CHAPTER 6—BUILDING ENVELOPE TRADE-OFFMETHOD
17	CHAPTER 7—WHOLE BUILDING SIMULATIONMETHOD
18	CHAPTER 8—THERMAL PROPERTIES FORDETERMINING COMPLIANCE
101	COMMENTARY REFERENCES
103	APPENDIX A—CLIMATE ZONE MAPS
104	APPENDIX B—THERMAL CONDUCTIVITY
108	APPENDIX C—THERMAL INERTIA(THERMAL MASS)
110	APPENDIX D—THERMAL PERFORMANCE OFWALLS WITH MASONRY VENEER

ACI 304.2R 1996 Spanish

Sun, 20 Oct 2024 09:37:10 +0000

This report describes pumps for transporting and placing concrete. Rigid and flexible pipelines are discussed and couplings and other accessories described. Recommendations for proportioning pumpable concrete suggest optimum gradation of aggregates; outline water, cement, and admixture requirements; and emphasize the need for evaluation of trial mixes for pumpability. The importance of saturating lightweight aggregates is stressed. Suggestions are given for layout of lines; for maintaining uniform delivery rate, as well as uniform quality of concrete at the end of the line; and for cleaning out pipelines. This report does not cover shotcreting or pumping of nonstructural insulating or cellular concrete. Keywords: admixtures; aggregate gradation; aggregates; cement content; coarse aggregates; concrete construction; concretes; conveying; couplings; fine aggregates; fineness modulus; lightweight aggregate concrete; lightweight aggregates; mix proportioning; pipeline; placing; placing boom; pozzolans; pumped concrete; pumps; quality control; water content.

ACI 309R 2005 Spanish

Sun, 20 Oct 2024 09:37:09 +0000

Consolidation is the process of removing entrapped air from freshly placed concrete. Several methods and techniques are available, the choice depending on the workability of the mixture, placing conditions, and degree of air removal desired. Some form of vibration is usually employed. This guide includes information on the mechanism of consolidation and gives recommendations on equipment, characteristics, and procedures for various classes of construction.