Title: 
            ASTM C31/C31M-21a, "Standard Practice for Making and Curing Concrete Test Specimens in the Field."
        
        
            Author(s): 
            ASTM Subcommittee C09.61 on Testing for Strength
        
        
            
                Publication: 
                Commentary Reference
            
            
                Volume: 
                
            
            
                Issue: 
                
            
            
                Appears on pages(s): 
                
            
            
                Keywords: 
                
            
            
                DOI: 
                10.1520/C0031_C0031M-21A
            
        
        
            Date: 
            5/1/2021
        
        
            Abstract:
            This practice covers procedures for making and curing cylinder and beam specimens from representative samples of fresh concrete for a construction project.