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ASTM C311-11

Standard Test Methods for Sampling and Testing Fly Ash or Natural Pozzolans for Use in Portland-Cement Concrete

Automaticky přeložený název:

Standardní zkušební metody pro odběr vzorků a testování popílku nebo přírodního pucolánů pro použití v Portland- cementárna betonu

NORMA vydána dne 1.4.2011

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Informace o normě:

Označení normy: ASTM C311-11
Poznámka: NEPLATNÁ
Datum vydání normy: 1.4.2011
Kód zboží: NS-12917
Počet stran: 10
Přibližná hmotnost: 30 g (0.07 liber)
Země: Americká technická norma
Kategorie: Technické normy ASTM

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Anotace textu normy ASTM C311-11 :

Keywords:

fly ash, natural pozzolan, Portland cement concrete (PCC), Pozzolans, Strength--cement/concrete mixtures/applications, Alkalies content--cement, Calcined pozzolans, Concrete admixtures, Fineness, Fly ash and other pozzolans, ICS Number Code 91.100.30 (Concrete and concrete products)

Doplňující informace

Significance and Use

These test methods are used to develop data for comparison with the requirements of Specification C618. These test methods are based on standardized testing in the laboratory and are not intended to simulate job conditions.

Strength Activity Index—The test for strength activity index is used to determine whether fly ash or natural pozzolan results in an acceptable level of strength development when used with hydraulic cement in concrete. Since the test is performed with mortar, the results may not provide a direct correlation of how the fly ash or natural pozzolan will contribute to strength in concrete.

Chemical Tests— The chemical component determinations and the limits placed on each do not predict the performance of a fly ash or natural pozzolan with hydraulic cement in concrete, but collectively help describe composition and uniformity of the material.

1. Scope

1.1 These test methods cover procedures for sampling and testing fly ash and raw or calcined pozzolans for use in portland-cement concrete.

1.2 The procedures appear in the following order:

	Sections
Sampling	7
CHEMICAL ANALYSIS
Reagents and apparatus	10
Moisture content	11 and 12
Loss on ignition	13 and 14
Silicon dioxide, aluminum oxide, iron oxide, calcium oxide, magnesium oxide, sulfur trioxide, sodium oxide and potassium oxide	15
Available alkali	16 and 17
Ammonia	18
PHYSICAL TESTS
Density	19
Fineness	20
Increase of drying shrinkage of mortar bars	21-23
Soundness	24
Air-entrainment of mortar	25 and 26
Strength activity index with portland cement	27-30
Water requirement	31
Effectiveness of Fly Ash or Natural Pozzolan in Controlling Alkali-Silica Reactions	32
Effectiveness of Fly Ash or Natural Pozzolan in Contributing to Sulfate Resistance	34

1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information purposes only.

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 and health practices and determine the applicability of regulatory limitations prior to use.

1.5 The text of this standard references notes and footnotes that provide explanatory information. These notes and footnotes (excluding those in tables) shall not be considered as requirements of this standard.

2. Referenced Documents

D4326-21	Standard Test Method for Major and Minor Elements in Coal Ash By X-Ray Fluorescence
C188-17(2023)	Standard Test Method for Density of Hydraulic Cement
C1697-21	Standard Specification for Blended Supplementary Cementitious Materials
C1437-20	Standard Test Method for Flow of Hydraulic Cement Mortar
C1012-04	Standard Test Method for Length Change of Hydraulic-Cement Mortars Exposed to a Sulfate Solution
C778-21	Standard Specification for Standard Sand
C670-24a	Standard Practice for Preparing Precision and Bias Statements for Test Methods for Construction Materials (Includes all amendments and changes 3/11/2024).
C618-23e1	Standard Specification for Coal Ash and Raw or Calcined Natural Pozzolan for Use in Concrete (Includes all amendments and changes 3/21/2023).
C150-07	Standard Specification for Portland Cement
C125-21a	Standard Terminology Relating to Concrete and Concrete Aggregates (Includes all amendments and changes 10/14/2021).
C114-23	Standard Test Methods for Chemical Analysis of Hydraulic Cement
C151-05	Standard Test Method for Autoclave Expansion of Hydraulic Cement
C109/C109M-23	Standard Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 50?mm [2 in.] Cube Specimens)
C33-07	Standard Specification for Concrete Aggregates
ACI 201.2R	Guide to Durable Concrete
C226-22	Standard Specification for Air-Entraining Additions for Use in the Manufacture of Air-Entraining Hydraulic Cement
C227-10	Standard Test Method for Potential Alkali Reactivity of Cement-Aggregate Combinations (Mortar-Bar Method) (Withdrawn 2018)
C430-17	Standard Test Method for Fineness of Hydraulic Cement by the 45-µm (No. 325) Sieve
C441-05	Standard Test Method for Effectiveness of Pozzolans or Ground Blast-Furnace Slag in Preventing Excessive Expansion of Concrete Due to the Alkali-Silica Reaction
C604-18(2023)	Standard Test Method for True Specific Gravity of Refractory Materials by Gas-Comparison Pycnometer
C204-24	Standard Test Methods for Fineness of Hydraulic Cement by Air-Permeability Apparatus
C219-20a	Standard Terminology Relating to Hydraulic and Other Inorganic Cements (Includes all amendments and changes 8/28/2020).
C157/C157M-17	Standard Test Method for Length Change of Hardened Hydraulic-Cement Mortar and Concrete
C185-20	Standard Test Method for Air Content of Hydraulic Cement Mortar
D1426-15(2021)e1	Standard Test Methods for Ammonia Nitrogen In Water (Includes all amendments and changes 12/22/2021).

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