{"id":189181,"date":"2024-10-19T11:55:06","date_gmt":"2024-10-19T11:55:06","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/aci-228-1r-19\/"},"modified":"2024-10-25T04:22:13","modified_gmt":"2024-10-25T04:22:13","slug":"aci-228-1r-19","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/aci\/aci-228-1r-19\/","title":{"rendered":"ACI 228.1R 19"},"content":{"rendered":"

This report provides methods for estimating the in-place strength of concrete in new and existing construction. These methods include: rebound number, penetration resistance, pullout, pull-off, ultrasonic pulse velocity, maturity, and cast-in-place cylinders. The principle, inherent limitations, and repeatability of each method are reviewed. Procedures are presented for developing the relationship needed to estimate compressive strength from in-place results. Factors to consider in planning in-place tests are discussed, and statistical techniques to interpret test results are presented. The use of in-place tests for acceptance of concrete is introduced. The Appendix A provides information on the number of strength levels that should be used to develop the strength relationship and explains a regression analysis procedure that accounts for error in both dependent and independent variables. Keywords: coefficient of variation; compressive strength; construction safety; in-place tests; nondestructive tests; sampling; statistical analysis.<\/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\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
3<\/td>\nTITLE PAGE <\/td>\n<\/tr>\n
4<\/td>\nCHAPTER 1\u2014INTRODUCTION
1.1\u2014Scope
1.2\u2014Need for in-place tests during construction <\/td>\n<\/tr>\n
5<\/td>\n1.3\u2014Influence of ACI 318
1.4\u2014Recommendations in other ACI documents <\/td>\n<\/tr>\n
6<\/td>\n1.5\u2014Existing construction
1.6\u2014Report objective
CHAPTER 2\u2013\u2013NOTATION AND DEFINITIONS
2.1\u2014Notation <\/td>\n<\/tr>\n
7<\/td>\n2.2\u2014Definitions
CHAPTER 3\u2014REVIEW OF METHODS
3.1\u2014Introduction <\/td>\n<\/tr>\n
8<\/td>\n3.2\u2014Rebound number (ASTM C805\/C805M) <\/td>\n<\/tr>\n
9<\/td>\n3.3\u2014Penetration resistance (ASTM C803\/C803M) <\/td>\n<\/tr>\n
10<\/td>\n3.4\u2014Pullout test (ASTM C900) <\/td>\n<\/tr>\n
13<\/td>\n3.5\u2013\u2013Pull-off test (ASTM C1583\/C1583M) <\/td>\n<\/tr>\n
14<\/td>\n3.6\u2014Ultrasonic pulse velocity (ASTM C597) <\/td>\n<\/tr>\n
16<\/td>\n3.7\u2014Maturity method (ASTM C1074) <\/td>\n<\/tr>\n
18<\/td>\n3.8\u2014Cast-in-place cylinders (ASTM C873\/C873M)
3.9\u2014Strength limitations
3.10\u2014Combined methods <\/td>\n<\/tr>\n
19<\/td>\n3.11\u2014Summary
CHAPTER 4\u2014STATISTICAL CHARACTERISTICS OF TEST RESULTS
4.1\u2014Need for statistical analysis <\/td>\n<\/tr>\n
20<\/td>\n4.2\u2014Repeatability of test results <\/td>\n<\/tr>\n
25<\/td>\nCHAPTER 5\u2014DEVELOPMENT OF STRENGTH RELATIONSHIP
5.1\u2014General <\/td>\n<\/tr>\n
26<\/td>\n5.2\u2014New construction <\/td>\n<\/tr>\n
29<\/td>\n5.3\u2014Existing construction <\/td>\n<\/tr>\n
30<\/td>\nCHAPTER 6\u2014IMPLEMENTATION OF IN-PLACE TESTING
6.1\u2014New construction <\/td>\n<\/tr>\n
33<\/td>\n6.2\u2014Existing construction <\/td>\n<\/tr>\n
34<\/td>\nCHAPTER 7\u2014INTERPRETING AND REPORTING RESULTS
7.1\u2014General <\/td>\n<\/tr>\n
35<\/td>\n7.2\u2014Statistical methods <\/td>\n<\/tr>\n
38<\/td>\n7.3\u2014Reporting results <\/td>\n<\/tr>\n
40<\/td>\nCHAPTER 8\u2014IN-PLACE TESTS FOR ACCEPTANCE OF CONCRETE IN NEW CONSTRUCTION
8.1\u2014General
8.2\u2014Acceptance criteria
8.3\u2014Early-age testing <\/td>\n<\/tr>\n
41<\/td>\nCHAPTER 9\u2014REFERENCES <\/td>\n<\/tr>\n
42<\/td>\nAuthored documents <\/td>\n<\/tr>\n
46<\/td>\nAPPENDIX A
A.1\u2014Minimum number of strength levels
A.2\u2014Regression analysis with X-error (Mandel 1984) <\/td>\n<\/tr>\n
48<\/td>\nA.3\u2014Standard deviation of estimated Y-value (Stone and Reeve 1986)
A.4\u2014Example <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

228.1R-19: Report on Methods for Estimating In-Place Concrete Strength<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ACI<\/b><\/a><\/td>\n2019<\/td>\n52<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":189186,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2650],"product_tag":[],"class_list":{"0":"post-189181","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\/189181","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\/189186"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=189181"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=189181"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=189181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}