Perlite expanded sand and crushed stone. Specifications 
             
            
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              Expanded pearlite sand and crushed stone. Specifications 
             
            
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              Crushed stone and sand of porous rocks. Technical requirements 
             
            
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              Aggregate cellular paper. General technical requirements 
             
            
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              Sandy-gravel mixtures for construction work. Specifications 
             
            
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              Sandy-gravel mixtures for construction work. Specifications 
             
            
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              Nonmetallic building materials, solid broken stone and sand made from industrial waste, porous aggregates for concrete 
             
            
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              Ashes and slag mixtures of thermal power plants for concrete. Technical conditions 
             
            
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              Mixes of fly-ash and slag of thermal plants for concretes. Specifications 
             
            
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              Slag crushed stone and slag sand fly-ash for concrete. Specifications 
             
            
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