{"id":160619,"date":"2024-10-19T09:38:56","date_gmt":"2024-10-19T09:38:56","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/aci-221r-96\/"},"modified":"2024-10-25T01:57:35","modified_gmt":"2024-10-25T01:57:35","slug":"aci-221r-96","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/aci\/aci-221r-96\/","title":{"rendered":"ACI 221R 96"},"content":{"rendered":"

This guide presents information on selection and use of normal weight and heavyweight aggregates in concrete. The selection and use of aggregates in concrete should be based on technical criteria as well as economic considerations and knowledge of types of aggregates generally available in the area of construction. The properties of aggregates and their processing and handling influence the properties of both plastic and hardened concrete. The effectiveness of processing, stockpiling, and aggregate quality control procedures will have an effect on batch-to-batch and day-to-day variation in the properties of concrete. Aggregates that do not comply with the specification requirements may be suitable for use if the properties of the concrete using these aggregates are acceptable. This is discussed under the topic of marginal aggregates (Chapter 6). Materials that can be recycled or produced from waste products are potential sources of concrete aggregates; however, special evaluation may be necessary. Keywords: aggregate grading; aggregate shape and texture; air entrainment; blast-furnace slag; bleeding (concrete); coarse aggregates; concretes; crushed stone; degradation resistance; density (mass\/volume); fine aggregates; mix proportioning; modulus of elasticity; pumped concrete; quality control; recycling; shrinkage; strength; tests; workability.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nCONTENTS <\/td>\n<\/tr>\n
2<\/td>\nCHAPTER 1\u2014 INTRODUCTION <\/td>\n<\/tr>\n
6<\/td>\nCHAPTER 2\u2014 PROPERTIES OF HARDENED CONCRETE INFLUENC…
2.1\u2014Durability
2.1.1 Freezing and thawing <\/td>\n<\/tr>\n
7<\/td>\n2.1.2 Wetting and drying
2.1.3 Heating and cooling
2.1.4 Abrasion resistance
2.1.5 Reactive aggregates
2.1.5.1 Alkali-silica reaction <\/td>\n<\/tr>\n
8<\/td>\n2.1.5.2 Cement-aggregate reaction
2.1.5.3 Alkali-carbonate rock reaction
2.1.6 Fire-resistance <\/td>\n<\/tr>\n
9<\/td>\n2.1.7 Acid resistance
2.1.8 Other reactions
2.2\u2014Strength <\/td>\n<\/tr>\n
10<\/td>\n2.3\u2014Shrinkage
2.4\u2014Thermal properties <\/td>\n<\/tr>\n
11<\/td>\n2.5\u2014Unit weight
2.6\u2014Modulus of elasticity
2.7\u2014Surface frictional properties <\/td>\n<\/tr>\n
12<\/td>\n2.8\u2014Economy
CHAPTER 3\u2014 PROPERTIES OF FRESHLY MIXED CONCRETE INF…
3.1\u2014General
3.2\u2014Mix proportions <\/td>\n<\/tr>\n
14<\/td>\n3.3\u2014Slump and workability <\/td>\n<\/tr>\n
15<\/td>\n3.4\u2014Pumpability
3.5\u2014Bleeding
3.6\u2014Finishing characteristics of unformed concrete…
3.7\u2014Air content <\/td>\n<\/tr>\n
16<\/td>\n3.8\u2014Other properties
CHAPTER 4\u2014 EFFECTS OF PROCESSING AND HANDLING OF AG…
4.1\u2014General
4.2\u2014Basic processing
4.2.1 Crushing <\/td>\n<\/tr>\n
17<\/td>\n4.2.2 Screening
4.2.3 Washing
4.2.4 Water classification
4.2.5 Rescreening
4.3\u2014Beneficiation
4.3.1 Crushing <\/td>\n<\/tr>\n
19<\/td>\n4.3.2 Other separation devices
4.4\u2014Control of particle shape
4.5\u2014Handling of aggregates <\/td>\n<\/tr>\n
20<\/td>\n4.6\u2014Environmental concerns
CHAPTER 5\u2014 QUALITY ASSURANCE
5.1\u2014General <\/td>\n<\/tr>\n
22<\/td>\n5.2\u2014Routine visual inspection
5.2.1\u2014Source
5.2.2\u2014Aggregate plant
5.2.3\u2014Aggregate handling system
5.3\u2014Routine control testing <\/td>\n<\/tr>\n
23<\/td>\n5.4\u2014Acceptance testing
5.5\u2014Record keeping and reports
CHAPTER 6\u2014 MARGINAL AND RECYCLED AGGREGATES
6.1\u2014Marginal aggregates
6.2\u2014Use of marginal aggregates <\/td>\n<\/tr>\n
24<\/td>\n6.3\u2014Beneficiation of marginal aggregates
6.4\u2014Economy of marginal aggregates
6.5\u2014Recycled aggregates and aggregates from waste …
CHAPTER 7\u2014 HEAVYWEIGHT AGGREGATES
7.1\u2014Introduction <\/td>\n<\/tr>\n
25<\/td>\n7.2\u2014Heavyweight aggregate materials
7.3\u2014Properties and specifications for heavyweight …
7.3.1 General
7.3.2 Specific gravity
7.3.3 Grading
7.3.4 Other properties
7.3.5 Methods of sampling and testing <\/td>\n<\/tr>\n
26<\/td>\n7.4\u2014Proportioning heavyweight concrete
7.5\u2014Aggregates for use in radiation\ufffdshielding conc…
7.6\u2014Heavyweight aggregate supply, storage, and bat…
CHAPTER 8\u2014 REFERENCES
8.1\u2014Recommended references <\/td>\n<\/tr>\n
27<\/td>\n8.2\u2014Cited references <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

221R-96: Guide for Use of Normal Weight and Heavyweight Aggregates in Concrete (Reapproved 2001)<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ACI<\/b><\/a><\/td>\n1996<\/td>\n29<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":160622,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2650],"product_tag":[],"class_list":{"0":"post-160619","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-aci","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/160619","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/160622"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=160619"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=160619"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=160619"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}