ASTM C1365-18 PDF
Name in English:
St ASTM C1365-18
Name in Russian:
Ст ASTM C1365-18
Original standard ASTM C1365-18 in PDF full version. Additional info + preview on request
Full title and description
Standard Test Method for Determination of the Proportion of Phases in Portland Cement and Portland‑Cement Clinker Using X‑Ray Powder Diffraction Analysis. This method (ASTM C1365‑18) defines a quantitative X‑ray diffraction (QXRD) procedure to determine the mass proportion of selected crystalline phases in Portland cement and clinker for use in quality control, research, and prediction of cementitious material performance.
Abstract
ASTM C1365‑18 specifies a QXRD‑based test method to quantify individual mineral phases (for example: alite, belite, aluminate, ferrite, periclase, gypsum, bassanite, anhydrite, and calcite) in Portland cement and clinker. The standard describes recommended analytical procedures, qualification of the analytical method via certified reference materials, and the intended applications in manufacturing quality control and performance prediction.
General information
- Status: Active (published as ASTM C1365‑18; work item for revision in progress as of recent ASTM records).
- Publication date: 2018 (designated C1365‑18).
- Publisher: ASTM International.
- ICS / categories: 91.100.10 — Cement and lime; materials testing for cement.
- Edition / version: C1365‑18 (current edition published 2018).
- Number of pages: 11 (official ASTM published length).
Scope
This test method covers the direct determination by mass of individual phases in Portland cement or Portland‑cement clinker using quantitative X‑ray powder diffraction (QXRD). The standard lists the specific crystalline phases covered (including alite, belite, aluminate, ferrite, periclase, gypsum, bassanite, anhydrite, and calcite), provides recommended analytical procedures, and requires laboratory qualification (via certified reference materials) to demonstrate acceptable precision and bias for the selected procedure. It is intended for bulk (gram‑scale) analysis rather than microscale or surface‑specific methods.
Key topics and requirements
- Quantitative X‑ray powder diffraction (QXRD) as the analytical technique for phase proportion determination.
- Phases explicitly addressed: alite (C3S), belite (C2S), aluminate (C3A), ferrite (C4AF), periclase (MgO), gypsum (CaSO4·2H2O), bassanite (hemihydrate), anhydrite, and calcite (CaCO3).
- Operator and instrument competence: assumes qualified X‑ray diffractometer operation and spectral interpretation by trained personnel.
- Laboratory qualification requirement: use of certified reference materials (CRMs) or round‑robin/CRM replicate analyses to demonstrate acceptable precision and bias for the selected analytical routine.
- Use as part of quality control in cement manufacture and as a tool for predicting properties of hydrated cement and concrete that depend on phase composition.
Typical use and users
Primary users include cement manufacturing quality control laboratories, independent materials testing labs, research laboratories at universities and institutes, and product development teams assessing clinker and cement composition. Typical uses are routine QC checks of clinker and cement batches, validation of clinker production processes, research on phase‑property relationships, and method validation through participation in interlaboratory studies or use of CRMs.
Related standards
ASTM C1365 is commonly used alongside other cement and cement‑testing standards, for example ASTM C150/C150M (Specification for Portland Cement), ASTM C1356 (microscopical point‑count procedure for phases in clinker), and other ASTM chemical and physical test methods and guides referenced for complementary analyses and quality assurance. Laboratories validating QXRD performance may also reference procedures and proficiency testing guidance from national laboratories and reference material providers.
Keywords
ASTM C1365‑18, quantitative X‑ray diffraction, QXRD, Portland cement, clinker, phase proportion, alite, belite, C3S, C2S, C3A, C4AF, certified reference materials, cement quality control.
FAQ
Q: What is this standard?
A: ASTM C1365‑18 is a Standard Test Method that specifies quantitative X‑ray powder diffraction procedures to determine the mass proportion of specific crystalline phases in Portland cement and Portland‑cement clinker.
Q: What does it cover?
A: It covers direct determination by QXRD of phases such as alite, belite, aluminate, ferrite, periclase, gypsum (and its hydrates/anhydrite), and calcite in cement and clinker, and it specifies laboratory qualification using CRMs to demonstrate acceptable precision and bias.
Q: Who typically uses it?
A: Cement plant QC laboratories, independent materials testing labs, academic and industrial research groups studying cement chemistry and performance, and manufacturers validating production and formulation changes.
Q: Is it current or superseded?
A: The designation C1365‑18 indicates the 2018 edition. As of recent ASTM records there is an active work item to revise the standard, so users should verify the current status with ASTM International for any updates or newer revisions beyond the 2018 edition.
Q: Is it part of a series?
A: It is part of the body of ASTM test methods and specifications related to hydraulic cements and cement testing (often referenced alongside ASTM C150/C150M, C1356 and other cement testing standards). It complements chemical and microscopical methods rather than replacing them.
Q: What are the key keywords?
A: Quantitative X‑ray diffraction (QXRD), phase analysis, Portland cement, clinker, alite, belite, aluminate, ferrite, periclase, gypsum, certified reference materials, quality control.