Laserfiche WebLink
Sulfate expo- <br />sure <br />Water soluble <br />sulfate (SO4) in <br />soil, percent by <br />weight <br />Sulfate (SO in <br />water, ppm <br />Cement type <br />Maximum water -cemen <br />titious materials ratio, by <br />weight, normal weight <br />aggregate concrete' <br />Minimum f', normal <br />weight and lightweight <br />aggregate concrete, psi* <br />Negligible <br />0.00-0.10 <br />0 -150 <br />— <br />— <br />-- <br />Moderatet <br />0.10 -0.20 <br />150 -1500 <br />II, IP(MS), IS(MS), P(MS), I(PM)(MS), <br />I(SM)(MS) <br />0.50 <br />4000 <br />Severe <br />0.20 -2.00 <br />1500- 10,000 <br />V <br />0.45 <br />4500 <br />Very severe <br />Over 2.00 <br />Over 10,000 <br />V plus pozzolant <br />0.45 <br />4500 <br />TABLE 4.3.1 - REQUIREMENTS FOR CONCRETE EXPOSED TO SULFATE - CONTAINING SOLUTIONS <br />• A lower water- cementidous materials ratio or higher strength may be required for low permeability or for protection against corrosion of embedded items or freez- <br />ing and thawing (Table 4.2.2). <br />t Seawater. <br />f Pozzolan that has been determined by test or service record to improve sulfate resistance when used in concrete containing Type V cement. <br />