diff --git a/src/paveit/datamodels/enumeration.py b/src/paveit/datamodels/enumeration.py
index 690cccf..38c2028 100755
--- a/src/paveit/datamodels/enumeration.py
+++ b/src/paveit/datamodels/enumeration.py
@@ -39,6 +39,12 @@ class BitumenCategoryEnum(Enum):
     
 class AsphaltCategoryEnum(Enum):
     ATS = "Asphalttragschichtmischgut"
+    ABS = "Asphaltbindermischgut"
+    ADS = "Asphaltdeckschichtmischgut"
+    SMA = "Splittmastixasphalt"
+    MA = "Gussasphalt"
+    PA = "Offenporiger Asphalt"
+    ACTD = 'Asphalttragdeckschichtmischgut'
 
 
 class LabtestsEnum(Enum):
diff --git a/src/paveit/datamodels/norm_specification.py b/src/paveit/datamodels/norm_specification.py
index c39e5c3..f85f3a1 100644
--- a/src/paveit/datamodels/norm_specification.py
+++ b/src/paveit/datamodels/norm_specification.py
@@ -189,7 +189,6 @@ class AsphaltParameterLimitsBaseEnum(EnumerateBase):
 class AsphaltParameterLimitsAsphalttragschicht(AsphaltParameterLimitsBaseEnum):
     
     name = StringField()
-    category = EnumField(AsphaltCategoryEnum, required=True)
     norm =  LazyReferenceField(NormDocumentBitumen, required=True)
     
     
@@ -202,4 +201,9 @@ class AsphaltParameterLimitsAsphalttragschicht(AsphaltParameterLimitsBaseEnum):
     
     min_voids_content = FloatField(min=0, max=100)
     max_voids_content = FloatField(min=0, max=100)
-    
\ No newline at end of file
+  
+class AsphaltParameterLimitsAsphaltbinderschicht(AsphaltParameterLimitsAsphalttragschicht):
+    pass
+      
+class AsphaltParameterLimitsAsphaltdeckschicht(AsphaltParameterLimitsAsphalttragschicht):
+    pass
\ No newline at end of file