ASTM C40
E1015668
ASTM C40 is a standard test method that specifies procedures for determining the organic impurities present in fine aggregates used in concrete.
All labels observed (2)
| Label | Occurrences |
|---|---|
| ASTM C40 canonical | 1 |
| ASTM C40 Standard Test Method for Organic Impurities in Fine Aggregates for Concrete | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T12552821 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: ASTM C40 Context triple: [ASTM C33, relatedTo, ASTM C40]
-
A.
ASTM C451
ASTM C451 is a standard test method published by ASTM International that specifies procedures for determining the early stiffening (false set) of hydraulic cement.
-
B.
ASTM C430
ASTM C430 is a standard test method published by ASTM International that specifies procedures for determining the fineness of hydraulic cement by means of the 45-μm (No. 325) sieve.
-
C.
ASTM C29
ASTM C29 is a standard test method published by ASTM International that specifies procedures for determining the bulk density (unit weight) and voids in aggregate.
-
D.
ASTM C91
ASTM C91 is a standard specification issued by ASTM International that defines the requirements for masonry cement used in construction applications.
-
E.
ASTM C109
ASTM C109 is a standardized test method that specifies procedures for determining the compressive strength of hydraulic cement mortars using 2-inch (50 mm) cube specimens.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: ASTM C40 Target entity description: ASTM C40 is a standard test method that specifies procedures for determining the organic impurities present in fine aggregates used in concrete.
-
A.
ASTM C451
ASTM C451 is a standard test method published by ASTM International that specifies procedures for determining the early stiffening (false set) of hydraulic cement.
-
B.
ASTM C430
ASTM C430 is a standard test method published by ASTM International that specifies procedures for determining the fineness of hydraulic cement by means of the 45-μm (No. 325) sieve.
-
C.
ASTM C29
ASTM C29 is a standard test method published by ASTM International that specifies procedures for determining the bulk density (unit weight) and voids in aggregate.
-
D.
ASTM C91
ASTM C91 is a standard specification issued by ASTM International that defines the requirements for masonry cement used in construction applications.
-
E.
ASTM C109
ASTM C109 is a standardized test method that specifies procedures for determining the compressive strength of hydraulic cement mortars using 2-inch (50 mm) cube specimens.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
ASTM standard
ⓘ
standard test method ⓘ |
| appliesToEndUse | concrete ⓘ |
| appliesToMaterial |
fine aggregate
ⓘ
sand ⓘ |
| determines |
acceptability of fine aggregates for use in concrete based on organic impurities
ⓘ
presence of organic impurities in fine aggregates ⓘ |
| fieldOfUse |
civil engineering
ⓘ
construction materials testing ⓘ |
| governsProperty | organic cleanliness of fine aggregates ⓘ |
| hasFullTitle |
ASTM C40 Standard Test Method for Organic Impurities in Fine Aggregates for Concrete
ⓘ
linked to:
ASTM C40
|
| industry |
construction
ⓘ
ready-mixed concrete production ⓘ |
| involvesProcedureStep |
allowing mixture to stand for a specified period
ⓘ
comparing color of supernatant liquid with standard color reference ⓘ mixing fine aggregate sample with sodium hydroxide solution ⓘ |
| language | English ⓘ |
| measurementBasis | visual color comparison ⓘ |
| primaryPurpose | screening test for potentially deleterious organic matter in fine aggregates ⓘ |
| publishedBy |
ASTM International
ⓘ
American Society for Testing and Materials ⓘ
linked to:
ASTM International
|
| relatedTo |
ASTM C33
ⓘ
ASTM C87 ⓘ |
| requiresEquipment |
color comparison bottles
ⓘ
standard color reference solution ⓘ |
| resultInterpretation |
darker color indicates potentially harmful organic impurities
ⓘ
if color is darker than standard reference, aggregate may be rejected or require further testing ⓘ |
| sampleType | representative sample of fine aggregate ⓘ |
| scope |
identification of organic impurities in manufactured fine aggregates
ⓘ
identification of organic impurities in natural sands ⓘ |
| standardCategory | concrete and aggregates ⓘ |
| status | active ASTM standard ⓘ |
| supportsSpecificationCompliance |
ASTM C33 concrete aggregates requirements
ⓘ
linked to:
ASTM C33
|
| testEnvironment | laboratory ⓘ |
| testType | organic impurities test ⓘ |
| usedBy |
aggregate suppliers
ⓘ
civil engineers ⓘ concrete producers ⓘ materials testing laboratories ⓘ |
| usedIn |
aggregate acceptance testing
ⓘ
concrete quality control ⓘ |
| usesMethod | colorimetric comparison ⓘ |
| usesReagent |
3% sodium hydroxide solution
ⓘ
sodium hydroxide solution ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: ASTM C40 Description of subject: ASTM C40 is a standard test method that specifies procedures for determining the organic impurities present in fine aggregates used in concrete.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.