Laserfiche WebLink
According to the publication "Design and Control of Concrete Mixtures," chlorides may be <br />introduced into concrete with the separate mix ingredients (admixtures, aggregates, <br />cement, and mixing water) or through exposure to deicing salts, seawater, or salt laden <br />air in coastal environments. An acceptable limit depends primarily upon the type of <br />structure and the environment to which it is exposed during its service life. ACI 31811-14, <br />table 19.3.2.1 shows that the maximum water-soluble chloride ion (Cl-) content in <br />concrete (percent by weight of cement) shall be 0.30% for non -pre -stressed concrete <br />exposed to moisture but not to an external source of chloride and 0.15% for non -pre- <br />stressed concrete exposed to moisture and an external source of chloride from deicing <br />chemical, salt, brackish water, seawater, or spray from these sources. <br />According to ACI 318, the maximum water-soluble chloride ion content in concrete, <br />percent by weight of cement for exposure class: "Concrete exposed to moisture and an <br />external source of chloride shall be maximum 0.15 % or 1,500 ppm." <br />E <br />Page 27 of 98 38 <br />Concrete Core Samples <br />Chlorides Content by ppm <br />1,400.00 <br />1,200.00 <br />.... <br />-------------- <br />1,000.00 <br />1,000.00 <br />E <br />4 <br />m <br />800.00 <br />P <br />. <br />- <br />m <br />600.00 <br />v <br />406.00 <br />_ Yv <br />is <br />200.00 <br />0.00 <br />- — <br />Main House Footing <br />Exterlor Column <br />Core Number <br />A Chloride Content at Top ppiti <br />ai Chloride Content at middle ppm Chloride Content at bottom ppm <br />According to the publication "Design and Control of Concrete Mixtures," chlorides may be <br />introduced into concrete with the separate mix ingredients (admixtures, aggregates, <br />cement, and mixing water) or through exposure to deicing salts, seawater, or salt laden <br />air in coastal environments. An acceptable limit depends primarily upon the type of <br />structure and the environment to which it is exposed during its service life. ACI 31811-14, <br />table 19.3.2.1 shows that the maximum water-soluble chloride ion (Cl-) content in <br />concrete (percent by weight of cement) shall be 0.30% for non -pre -stressed concrete <br />exposed to moisture but not to an external source of chloride and 0.15% for non -pre- <br />stressed concrete exposed to moisture and an external source of chloride from deicing <br />chemical, salt, brackish water, seawater, or spray from these sources. <br />According to ACI 318, the maximum water-soluble chloride ion content in concrete, <br />percent by weight of cement for exposure class: "Concrete exposed to moisture and an <br />external source of chloride shall be maximum 0.15 % or 1,500 ppm." <br />E <br />Page 27 of 98 38 <br />