ASTM C928-00

Standard Specification for Packaged, Dry, Rapid-Hardening Cementitious Materials for Concrete Repairs

SCOPE
1.1 This specification covers packaged, dry, cementitious mortar or concrete materials for rapid repairs to hardened hydraulic-cement concrete pavements and structures. Materials that contain organic compounds, such as bitumens, epoxy resins, and polyesters, as the principal binder are not included.  
1.1.1 Packaged, dry, concrete material contains aggregate of which at least 5% by mass of the total mixture is retained on a 9.5-mm (3/8-in.) sieve.  
1.1.2 Packaged, dry, mortar material contains aggregate of which less than 5% by mass of the total mixture is retained on a 9.5-mm (3/8-in.) sieve.  
1.2 Aqueous solutions, aqueous emulsions or dispersions may be included as components of the packaged materials. The manufacturer may specify that these liquids are to replace some or all of the mixing water.  
1.3 Aggregates must be included as a component of the packaged materials. The manufacturer may recommend job site addition of specific amounts and types of additional aggregates to his product for some uses. However, such reformulated products are not within the scope of this specification.  
1.4 The values stated in SI units are to be regarded as standard. The inch-pound units given in parentheses are for information only. Values in SI units shall be obtained by measurement in SI units or by appropriate conversion of measurements made in other units, using the Rules for Conversion and Rounding given in IEEE/ASTM SI-10.
1.5 The following safety hazards caveat pertains to the test methods portion of this specification: This standard does not purport to address all of the safety problems, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

General Information

• Status: Historical
• Publication Date: 09-Aug-2000
• ICS: 91.100.30 - Concrete and concrete products
• Technical Committee: C09 - Concrete and Concrete Aggregates
• Drafting Committee: C09.43 - Packaged Dry Combined Materials

Relations

• Replaced By: ASTM C928-05 - Standard Specification for Packaged, Dry, Rapid-Hardening Cementitious Materials for Concrete Repairs
• Effective Date: 01-May-2005

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: C 928 – 00
Standard Specification for
Packaged, Dry, Rapid-Hardening Cementitious Materials for
Concrete Repairs
This standard is issued under the fixed designation C 928; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope 2. Referenced Documents
1.1 This specification covers packaged, dry, cementitious 2.1 ASTM Standards:
mortar or concrete materials for rapid repairs to hardened C 39 Test Method for Compressive Strength of Cylindrical
hydraulic-cement concrete pavements and structures. Materials Concrete Specimens
that contain organic compounds, such as bitumens, epoxy C 78 Test Method for Flexural Strength of Concrete (Using
resins, and polyesters, as the principal binder are not included. Simple Beam with Third-Point Loading)
1.1.1 Packaged, dry, concrete material contains aggregate of C 109/C 109M Test Method for Compressive Strength of
which at least5%by mass of the total mixture is retained on Hydraulic Cement Mortars (Using 2-in. or 50-mm Cube
a 9.5-mm ( ⁄8-in.) sieve. Specimens)
1.1.2 Packaged, dry, mortar material contains aggregate of C 143 Test Method for Slump of Hydraulic Cement Con-
which less than5%by mass of the total mixture is retained on crete
a 9.5-mm ( ⁄8-in.) sieve. C 157 Test Method for Length Change of Hardened
1.2 Aqueous solutions, aqueous emulsions or dispersions Hydraulic-Cement Mortar and Concrete
may be included as components of the packaged materials.The C 192/C 192M Practice for Making and Curing Concrete
manufacturermayspecifythattheseliquidsaretoreplacesome Test Specimens in the Laboratory
or all of the mixing water. C 403/C 403M TestMethodforTimeofSettingofConcrete
1.3 Aggregates must be included as a component of the Mixtures by Penetration Resistant
packaged materials. The manufacturer may recommend job C 494 Specification for ChemicalAdmixtures for Concrete
site addition of specific amounts and types of additional C 666 Test Method for Resistance of Concrete to Rapid
aggregates to his product for some uses. However, such Freezing and Thawing
reformulated products are not within the scope of this specifi- C 672/C 672M Test Method for Scaling Resistance of Con-
cation. crete Surfaces Exposed to Deicing Chemicals
1.4 The values stated in SI units are to be regarded as C 702 Practice for Reducing Field Samples ofAggregate to
standard. The inch-pound units given in parentheses are for Testing Size
information only. Values in SI units shall be obtained by C 882 Test Method for Bond Strength of Epoxy-Resin
measurement in SI units or by appropriate conversion of Systems Used With Concrete By Slant Shear
measurements made in other units, using the Rules for Con- C 1012 Test Method for Length Change of Hydraulic-
version and Rounding given in IEEE/ASTM SI-10. Cement Mortars Exposed to a Sulfate Solution
1.5 The following safety hazards caveat pertains to the test E 96 Test Methods for Water Vapor Transmission of Mate-
methods portion of this specification: This standard does not rials
purport to address all of the safety concerns, if any, associated IEEE/ASTM SI-10 Standard for Use of the International
with its use. It is the responsibility of the user of this standard System of Units (SI): The Modern Metric System
to establish appropriate safety and health practices and
determine the applicability of regulatory limitations prior to
use.
This specification is under the jurisdiction of ASTM Committee C09 on
Concrete and ConcreteAggregates and is the direct responsibility of Subcommittee Annual Book of ASTM Standards, Vol 04.02.
C09.43 on Packaged, Dry, Combined Concrete. Annual Book of ASTM Standards, Vol 04.01.
Current edition approved Aug. 10, 2000. Published October 2000. Originally Annual Book of ASTM Standards, Vol 04.06.
published as C 928 – 80. Last previous edition C 928 – 99a. Annual Book of ASTM Standards, Vol 14.02.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C928–00
3. Materials and Manufacture the packaged material contains sufficient chlorides to cause
corrosion to steel reinforcement when the concrete is exposed
3.1 Three types of packaged, dry, rapid-hardening concrete
to weather, is on the ground, or is in an otherwise moist
and three types of packaged, dry, rapid-hardening mortar are
environment. A much lower chloride ion content is suggested
identified in Table 1.
for use in prestressed concrete. Guidance for such users is
4. Chemical Composition outside the scope of this specification.
4.2 If the material contains metallic iron in excess of 1
4.1 If the material contains soluble chlorides or other
weight %, the package markings shall contain the following
ingredients in sufficient quantity to cause corrosion to steel
statement in letter size no smaller than the directions for use:
reinforcement, the package markings shall contain the follow-
If small or scattered spots of iron-staining are considered objec-
ing statement in letter size no smaller than the directions for
tionable, do not use this material where it will be exposed.
use:
This material is not recommended for use in a moist environment in contact
5. Performance Requirements
with steel reinforcement.
5.1 The materials shall comply with the performance re-
4.1.1 Consider a total chloride ion content (Berman,
quirements in Table 1 for the applicable type.
6,7
1972) in the packaged repair material greater than 600
3 3
g/m (1 lb/yd ) of the hardened repair material indicative that
6. Sampling
6.1 A lot is the quantity of packaged repair material nor-
mally placed on a pallet. In general, this quantity will weigh
Berman, H.A. Determination of Chloride in Hardened Portland Cement Paste,
from 900 to 1800 kg (2000 to 4000 lb).
Mortar,andConcrete,ASTMJournalofMaterials,Vol.7,No.3,1972,pp.330–335.
6.2 A unit sample is a single package of material randomly
Clear, K. C., and Harrigan, E. T., “Sampling and Testing for Chloride Ion in
selected from the lot.
Concrete,” Report No. FHWA-RD77-85, Federal Highway Administration, Wash-
ington, DC, August 1977 (Available as PB 275–428/AS National Technical
Information Services).
7. Specimen Preparation
7.1 Concrete—Mechanicallymixthepackageddryconcrete
A
TABLE 1 Performance Requirements
material with mixing liquid. Determine the properties of the
3 hours 1 day 7 days 28 days
unhardened mixture, and mold and cure the specimens in
Compressive Strength,
accordance with Practice C 192/C 192M or modifications as
min, MPa (psi)
B
outlined herein.
R1 concrete or mortar 3.5 (500) 14 (2000) 28 (4000)
B
R2 concrete or mortar 7.0 (1000) 21 (3000) 28 (4000) 7.1.1 The sample of packaged dry material shall be any
B
R3 concrete or mortar 21 (3000) 35 (5000) 35 (5000)
combination of whole packages yielding not less than 20 L( ⁄3
Bond strength, min, MPa (psi)
ft ) of hardened material.
R1, R2 and R3 concrete or . — 7 (1000) 10 (1500) —
mortar
7.1.2 Base the quantity of water, other liquid component, or
Length change, based on
both added to the sample on the quantity per bag stated in the
length at 3 h, max, %
directions for use.
R1, R2, and R3 concrete allowable increase after 28 days +0.15
or mortar in water
7.1.3 Place the sample in the mixing machine and add the
allowable decrease after 28 days –0.15
required amount of liquid. Start mixing immediately. Continue
in air
mixingforthelengthoftimeindicatedinthedirectionsforuse.
Consistency of concrete concrete Flow of
or mortar slump, mortar, min, %
7.1.4 When making the slump test in accordance with Test
min, mm
Method C 143, schedule work so the test will be completed in
(in.)
R1 consistency after 15 min 75 (3) 100 5 6 ⁄2 min after the mixing liquid is added to the R2 or R3
after addition of mixing
materials or 15 6 ⁄2 min after mixing the liquid with the R1
liquid
materials.
R2 and R3 consistency at 5 75 (3) 100
min after addition of mixing 7.1.5 Mold the required number of specimens using addi-
liquid
tional samples as may be necessary, mixed in accordance with
Scaling resistance to deicing
7.1.1-7.1.4.Donotusethemixturesformoldingtestspecimens
chemicals after 25 cycles of
when the slump is less than that specified in Table 1.
freezing and thawing
NOTE 1—Where the nominal maximum particle size is not greater than
Concrete, max visual rating 2.5
C 2 2
Mortar, max scaled material 5 kg/m (1 lb/ft )
25 mm (1 in.), the use of cylindrical molds 100 mm (4 in.) in diameter by
A
200 mm (8 in.) in length is su
...