ASTM D8329-20

Standard Test Method for Determination of Water/Cementitious Materials Ratio for Geosynthetic Cementitious Composite Mats (GCCMs) and Measurement of the Compression Strength of the Cementitious Material Contained Within

SIGNIFICANCE AND USE
5.1 Hydration is a critical aspect of GCCM installation. GCCM installations are often hydrated with excess water to ensure that a saturated condition exists. Therefore, it is not generally possible to monitor and control exactly the water addition that absorbs and hydrates the cementitious materials due the practical methods of hydration in use.  
5.2 It is important to be able to distinguish the quality of cementitious material used in applications for GCCMs. A measurement of compressive strength properties of the cementitious material is often an accepted method to provide a measure of the cement strength and quality. The compressive strength properties will vary with the water/cementitious material ratio and, therefore, it is necessary to determine a practical value that approximates in-use hydration and not a water/cementitious material ratio that simply provides the maximum properties but cannot be expected as representative of actual use conditions.  
5.3 The compressive strength of the cementitious material can be affected by both over and under hydration.  
5.4 This method identifies a means to obtain a water/cementitious material ratio representative of that obtained by proper hydration of GCCMs to allow replication for laboratory compressive strength testing for use by GCCM designers, inspectors, and installers.
SCOPE
1.1 The purpose of the proposed test method is to obtain a water/cementitious material ratio that allows for a practical measurement of the compressive strength of the cementitious material contained within a geosynthetic cementitious composite mat (GCCM). This water/cementitious material ratio should be generally representative of that achieved practically upon the hydration of a GCCM. Because GCCM materials do not involve mixing or the use of exact water hydration methods when employed in the field, this method is necessary to provide a quantitative estimate of the water/cementitious material ratio.  
1.2 This procedure determines the water/cementitious material ratio for a properly hydrated GCCM, which is then used to create cube or cylinder specimens for compressive strength testing as per the appropriate referenced ASTM test methods. Compressive strength results will then be representative of the strength of the inherent cementitious material found in the GCCM after normal GCCM hydration.  
1.3 The values in SI units are to be regarded as standard. Values in inch-pound units are in parentheses for information.  
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.  
1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Historical
• Publication Date: 31-May-2020
• ICS: 59.080.70 - Geotextiles
• Technical Committee: D35 - Geosynthetics
• Drafting Committee: D35.05 - Geosynthetic Erosion Control

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: D8329 − 20
Standard Test Method for
Determination of Water/Cementitious Materials Ratio for
Geosynthetic Cementitious Composite Mats (GCCMs) and
Measurement of the Compression Strength of the
1
Cementitious Material Contained Within
This standard is issued under the fixed designation D8329; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
2
2.1 ASTM Standards:
1.1 The purpose of the proposed test method is to obtain a
water/cementitious material ratio that allows for a practical C39/C39M Test Method for Compressive Strength of Cylin-
measurement of the compressive strength of the cementitious drical Concrete Specimens
C109/C109M Test Method for Compressive Strength of
material contained within a geosynthetic cementitious compos-
ite mat (GCCM).This water/cementitious material ratio should Hydraulic Cement Mortars (Using 2-in. or [50-mm] Cube
Specimens)
be generally representative of that achieved practically upon
D4439 Terminology for Geosynthetics
the hydration of a GCCM. Because GCCM materials do not
involve mixing or the use of exact water hydration methods D8030/D8030M Practice for Sample Preparation for GCCM
whenemployedinthefield,thismethodisnecessarytoprovide
3. Terminology
a quantitative estimate of the water/cementitious material ratio.
3.1 Definitions:
1.2 This procedure determines the water/cementitious ma-
3.1.1 deconsolidation, n—process by which the specimens
terial ratio for a properly hydrated GCCM, which is then used
are exercised and loosened such that they approximate a
to create cube or cylinder specimens for compressive strength
GCCM that has been deployed in the field.
testing as per the appropriate referenced ASTM test methods.
Compressive strength results will then be representative of the
3.2 For definitions of other terms used in this standard, refer
strength of the inherent cementitious material found in the
to Terminology D4439.
GCCM after normal GCCM hydration.
4. Summary of Test Method
1.3 The values in SI units are to be regarded as standard.
Values in inch-pound units are in parentheses for information.
4.1 This method involves measuring the mass per unit area
1.4 This standard does not purport to address all of the of uncured GCCM samples, measuring the mass per unit area
safety concerns, if any, associated with its use. It is the of the geosynthetic portion(s), and using this to calculate the
mass per unit area of the cementitious material contained
responsibility of the user of this standard to establish appro-
priate safety, health, and environmental practices and deter- within the GCCM. This mass per unit area of the cementitious
material is used in conjunction with the mass per unit area of
mine the applicability of regulatory limitations prior to use.
the cured saturated surface dry (SSD) GCCM to determine the
1.5 This international standard was developed in accor-
water/cementitious material ratio representative of a properly
dance with internationally recognized principles on standard-
cured and hydrated GCCM. This water/cementitious material
ization established in the Decision on Principles for the
ratio then forms the basis for laboratory preparation of the
Development of International Standards, Guides and Recom-
same cementitious material for specimens which will then be
mendations issued by the World Trade Organization Technical
tested for compressive strength as per the appropriate ASTM
Barriers to Trade (TBT) Committee.
standard methods.
1
This test method is under the jurisdiction of ASTM Committee D35 on
2
Geosynthetics and is the direct responsibility of Subcommittee D35.05 on Geosyn- For referenced ASTM standards, visit the ASTM website, www.astm.org, or
thetic Erosion Control. contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
Current edition approved June 1, 2020. Published June 2020. DOI: 10.1520/ Standards volume information, refer to the standard’s Document Summary page on
D8329-20. the ASTM website.
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D8329 − 20
5. Significance and Use W
i
M 5 (1)
i
L 3D
5.1 Hydration is a critical aspect of GCCM installation.
GCCM installations are often hydrated with excess water to
where:
2
ensure that a saturated condition exists. Therefore, it is not
M = mass per unit area (g/mm ) of component i,
i
generally possible to monitor and control exactly the water
i = specific component(s) including geosynthetic material,
addit
...