Concrete Q&A: Chloride Concentration in Soil and Exposure Classes, and Cleaning Slabs During Tilt-up Construction

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Title: Concrete Q&A: Chloride Concentration in Soil and Exposure Classes, and Cleaning Slabs During Tilt-up Construction

Author(s):

Publication: Concrete International

Volume: 40

Issue: 2

Appears on pages(s): 60

Keywords:

Date: 2/1/2018

Abstract:
I’m designing a structure that will be exposed to chlorides in soil, so I’m reviewing the requirements listed in Table 19.3.2.1 —Requirements for concrete by exposure class, in ACI 318- 14.1 The chloride concentration in the soil is lower than the concentration in seawater, so can I specify concrete with a strength value between 2500 and 5000 psi (17.2 and 34.5 MPa), based on C1 and C2 exposure classes, respectively? Does ACI provide recommendations on cleaning concrete slabs during tilt-up construction?