ASTM D806-19 PDF

Full title and description

ASTM D806-19 — Standard Test Method for Cement Content of Hardened Soil‑Cement Mixtures. This test method provides a chemical-analysis procedure to determine cement content in soil‑cement or aggregate‑cement mixtures after significant hydration or hardening has occurred; it is intended for use when freshly mixed test methods are not appropriate.

Abstract

This short standard specifies the determination of cement content of hardened soil‑cement mixtures by chemical analysis of calcium oxide (CaO) and notes alternative analysis by X‑ray fluorescence in accordance with C114. It is a compact procedure (5 pages) issued as ASTM D806‑19 (released in 2019) for quality control, forensic examination, and laboratory reporting of hardened soil‑cement materials.

General information

• Status: Active.
• Publication date: 2019 (released/issued December 1, 2019).
• Publisher: ASTM International.
• ICS / categories: ICS 93.020 (Construction materials and building).
• Edition / version: ASTM D806‑19 (D0806‑19 DOI 10.1520/D0806‑19).
• Number of pages: 5 pages.

Scope

This test method covers the determination by chemical analysis of the cement content of hardened soil‑cement mixtures. It is intended for samples in which a significant degree of cement hydration or hardening has occurred and is not focused on freshly mixed materials (for which Test Methods D2901 or D5982 apply). The standard also specifies units (SI) and references procedures for significant digits and rounding.

Key topics and requirements

• Determination of cement content by chemical analysis of calcium oxide (CaO) in hardened soil‑cement.
• Applicability limited where soils or aggregates yield significant dissolved CaO under test conditions (may affect accuracy).
• X‑ray fluorescence (XRF) analysis in accordance with C114 may be used as an alternative for CaO determination.
• Cross‑references to methods for fresh mixtures (D2901, D5982) and practices on sampling/quality (Practice D3740) and significant‑digits rules (Practice D6026).
• Short, prescriptive procedure suitable for laboratory QC, field sample follow‑up, and contract compliance testing.

Typical use and users

Used by geotechnical and materials testing laboratories, transportation and public‑works agencies, contractors performing soil stabilization or soil‑cement construction, forensic investigators evaluating in‑place treatments, and researchers validating stabilization mixes. The standard is suited to QC/acceptance testing where hardened samples (cores, lumps) must be chemically analyzed for cement content.

Related standards

Related ASTM documents and references include Test Methods D2901 and D5982 (cement content of freshly mixed soil‑cement), Practice D3740 (laboratory competence), Practice D6026 (significant digits and rounding), and ASTM C114 (XRF analysis reference) as noted in the standard. D806‑19 replaced earlier editions (the prior published designation D0806‑11 is shown as superseded).

Keywords

cement content; hardened soil‑cement; soil stabilization; CaO analysis; chemical analysis; ASTM D806‑19; material testing; construction quality control

FAQ

Q: What is this standard?

A: ASTM D806‑19 is a Standard Test Method that specifies a chemical‑analysis procedure to determine cement content in hardened soil‑cement mixtures (samples that have undergone cement hydration and hardening).

Q: What does it cover?

A: It covers determination of cement content by measuring calcium oxide (CaO) via chemical analysis; it notes when XRF per C114 may be used and clarifies limitations when soils/aggregates contribute dissolved CaO. It is not intended for freshly mixed material testing—use D2901 or D5982 in those cases.

Q: Who typically uses it?

A: Geotechnical/materials labs, transportation agencies, contractors doing soil stabilization or soil‑cement work, and investigators or researchers needing cement‑content data from hardened samples.

Q: Is it current or superseded?

A: As published, D806‑19 is the active edition (released in 2019) and is listed as active in ASTM catalogues and commercial standards sellers; it supersedes earlier editions (prior designation D0806‑11). Users should confirm any later revisions or work items that may be in progress before final procurement.

Q: Is it part of a series?

A: The standard is maintained by ASTM subcommittee D18.15 (Concrete and Cementitious Materials / related soil‑cement methods) and is published within ASTM Book of Standards volume 04.08; it is linked by references to other ASTM methods and practices as noted in the standard.

Q: What are the key keywords?

A: cement content; hardened soil‑cement; soil stabilization; CaO; chemical analysis; XRF; material testing.