{"id":160700,"date":"2024-10-19T09:39:13","date_gmt":"2024-10-19T09:39:13","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/aci-309-2r-15\/"},"modified":"2024-10-25T01:57:51","modified_gmt":"2024-10-25T01:57:51","slug":"aci-309-2r-15","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/aci\/aci-309-2r-15\/","title":{"rendered":"ACI 309.2R 15"},"content":{"rendered":"<p>This document provides guidelines for identifying and controlling visible effects on the surface of concrete as it relates to consolidation on precast or cast-in-place-formed concrete surfaces. A perfectly homogenous and blemish-free concrete element is difficult, if not impossible, to achieve. This document, therefore, does not define an acceptable level of quality, as this should be defined in the contract documents. This guide explores the direct and indirect cause-and-effect relationships, as well as other factors, concerning concrete surface appearance. Photographs are included in this document to illustrate typical concrete surface finish effects that are a departure from absolute perfection. Negative surface effects in concrete can be minimized by proper planning during the design and specification stages. Significant consolidation factors that minimize undesirable concrete negative surface effects are also discussed. Keywords: bugholes; consistency; consolidation; construction joints; discoloration; form offset; formwork (construction); layer lines; mixture proportioning; plastic settlement cracking; preplaced-aggregate concrete; quality control; sand streaking; surface air voids; surface defects; vibration; workability.<\/p>\n<h4>PDF Catalog<\/h4>\n<table border=\"1px\" class=\"des-table\">\n<tr>\n<th>PDF Pages<\/th>\n<th>PDF Title<\/th>\n<\/tr>\n<tr>\n<td><b>3<b><\/td>\n<td>TITLE PAGE  <\/td>\n<\/tr>\n<tr>\n<td><b>4<b><\/td>\n<td>CHAPTER 1\u2014INTRODUCTION AND SCOPE <br \/> 1.1\u2014Introduction <br \/> 1.2\u2014Scope <br \/> CHAPTER 2\u2014DEFINITIONS <br \/> 2.1\u2014Definitions <br \/> CHAPTER 3\u2014FACTORS CAUSING NEGATIVE SURFACE EFFECTS <br \/> 3.1\u2014General causes of negative surface effects <br \/> 3.2\u2014Design considerations of structural members  <\/td>\n<\/tr>\n<tr>\n<td><b>6<b><\/td>\n<td>3.3\u2014Specifications <br \/> 3.4\u2014Forms  <\/td>\n<\/tr>\n<tr>\n<td><b>8<b><\/td>\n<td>3.5\u2014Properties of fresh concrete  <\/td>\n<\/tr>\n<tr>\n<td><b>9<b><\/td>\n<td>3.6\u2014Placement <br \/> 3.7\u2014Consolidation <br \/> 3.8\u2014Special construction conditions  <\/td>\n<\/tr>\n<tr>\n<td><b>10<b><\/td>\n<td>CHAPTER 4\u2014NEGATIVE SURFACE EFFECTS <br \/> 4.1\u2014Honeycomb <br \/> 4.2\u2014Air voids in formed surfaces <br \/> 4.3\u2014Formstreaking <br \/> 4.4\u2014Aggregate transparency <br \/> 4.5\u2014Color variation  <\/td>\n<\/tr>\n<tr>\n<td><b>11<b><\/td>\n<td>4.6\u2014Sand streaking <br \/> 4.7\u2014Layer lines <br \/> 4.8\u2014Form offsets <br \/> 4.9\u2014Plastic settlement cracking <br \/> CHAPTER 5\u2014MINIMIZING NEGATIVESURFACE EFFECTS  <\/td>\n<\/tr>\n<tr>\n<td><b>12<b><\/td>\n<td>CHAPTER 6\u2014CONCLUSION <br \/> CHAPTER 7\u2014REFERENCES <br \/> Cited references  <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"<p><b>309.2R-15 Guide to Identification and Control of Visible Surface Effects of Consolidation on Formed Concrete Surfaces<\/b><\/p>\n<table class=\"shortdes-table\" style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/aci\/\"><b>ACI<\/b><\/a><\/td>\n<td>2015<\/td>\n<td>16<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":160705,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2650],"product_tag":[],"class_list":{"0":"post-160700","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\/160700","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\/160705"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=160700"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=160700"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=160700"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}