Home>Products

sulfate contents in fine aggregate fo concrete

  • Sulfate Attack and Sulfate Content in Concrete: A

    Jan 14, 2017· Sulfate ions contained in the concrete ingredients like cement, water, aggregate and admixture are the reason for internal sulfate attack. External sulfate attack is

  • Sulfate Contents In Fine Aggregate Fo Concrete

    Effect of chloride and sulfate contamination in soils on corrosion of steel and concrete high salt content in the soil and groundwater the ulfate and to fine aggregate ratio of 20 by weight wa kept invariant in all the concrete mixes Sulfate Attack And Sulfate Content In Concrete A

  • Sulfate in concrete

    Sulfate in concrete Excessive amounts of mobile sulfate, derived from aggregates or other constituents in concrete, can cause disruption due to expansion. BS 8110 part 1 Structural use of concrete, 1985, had a limit of 4% by mass of cement based on the total acid soluble sulfate method expressed as SO 3 (clauses 6.2.5.3).

  • sulfate contents in fine aggregate fo concrete

    recycled concrete aggregate Fine aggregate passing the No.4 sieve shall consist of fines from the operation of crushing the recycled Recycled concrete aggregate shall not be used in locations with high sulfate content soils (no more than 1 percent). The amount of flat.

  • Sulphate Content Testing Of Aggregate

    Sulphate Content Testing Of Aggregate. Sulphate attack on concrete is a chemical process where sulphate ions attack components of cement paste.Fly ash, aggregate, and admixtures.Portland cement might be over-sulphated.Presence of natural gypsum in the aggregate.Chemical process of sulphate attack.The sulphate ion hydrated calcium aluminate andor the calcium.

  • sulfate contents in fine aggregate to concrete

    Behavior of High Performance Concrete Exposed to Internal Sulfate . Oct 31, 2014 Four sulfate contents (0.5, 1.5, 2.0, and 2.5 %) in fine aggregate were studied. Test results showed that high performance concrete had lostget price

  • sulfate contents in fine aggregate to concrete

    BS EN 12620:2013 Aggregates for concrete BSI Shop. 31 May 2013 Water soluble sulfate content of recycled aggregates Chlorides Carbonate content for concrete pavement surface courses of fine

  • contents in fine aggregate to concrete

    Sulfate contents in fine aggregate to concrete sulfate contents in fine aggregate fo concrete permissible levels of chlorides and sulfates in aggregate feb 1 1996 the report lists chloride and sulfate content but i dont know how to levels of recycled concrete aggregates in portland cement. more.

  • Micro-Deval Test for Evaluating the Quality of Fine

    Quality of Fine Aggregate for Concrete and Asphalt c. A. ROGERS, M. L. BAILEY, AND B. PRICE The sulfate soundness test has been used for many years for evaluating the physical suitability of fine aggregate. This test suf­ fers from poor within-laboratory and multilaboratory precision; it is a time-consuming and expensive test.

  • Aggregates for Concrete as per American Standards ASTM [PDF]

    The fine aggregate shall be subjected to 5 cycles of the soundness test, which shall have a weighted average loss not higher than 10% and 15% when sodium sulfate and magnesium

  • Sulfate Attack and Sulfate Content in Concrete: A

    Jan 14, 2017· Sulfate ions contained in the concrete ingredients like cement, water, aggregate and admixture are the reason for internal sulfate attack. External sulfate attack is

  • Sulfate in concrete

    Sulfate in concrete Excessive amounts of mobile sulfate, derived from aggregates or other constituents in concrete, can cause disruption due to expansion. BS 8110 part 1 Structural use of concrete, 1985, had a limit of 4% by mass of cement based on the total acid soluble sulfate method expressed as SO 3 (clauses 6.2.5.3).

  • Outlook for the use in concrete of aggregates with high

    Outlook for the use in concrete of aggregates with high sulfate content European standard limits the sulfate content in aggregates in order to avoid any concrete degradation due to internal sulfate attack. As a result, some materials (natural aggregates, concrete demolition waste, excavation materials) cannot be used in concrete production.

  • Author: Loïc Divet, Jérémy Colas, Thierry Chaussadent, Stéphane Lavaud, Béatrice Desrues
  • sulfate contents in fine aggregate to concrete

    Behavior of High Performance Concrete Exposed to Internal Sulfate . Oct 31, 2014 Four sulfate contents (0.5, 1.5, 2.0, and 2.5 %) in fine aggregate were studied. Test results showed that high performance concrete had lostget price

  • Sulfate Attack of Mortars Containing Recycled Fine Aggregates

    Jul 01, 2005· Title: Sulfate Attack of Mortars Containing Recycled Fine Aggregates Author(s): S. T. Lee, H. Y. Moon, R. N. Swamy, S. S. Kim, and J. P. Kim Publication: Materials Journal Volume: 102 Issue: 4 Appears on pages(s): 224-230 Keywords: compressive strength; expansion; fine aggregate; sulfate attack Date: 7/1/2005 Abstract: This paper presents a detailed experimental study on the

  • Types of Sulphate Attack in Concrete- Influences and Sources

    For instance, the use of sulfate-rich aggregate and an excess of added gypsum in the cement or contamination. Delayed ettringite formation is a special case of internal sulfate attack. It occurs in concrete which has been cured at elevated temperatures

  • Sulphate Content Testing Of Aggregate

    Sulphate Content Testing Of Aggregate. Sulphate attack on concrete is a chemical process where sulphate ions attack components of cement paste.Fly ash, aggregate, and admixtures.Portland cement might be over-sulphated.Presence of natural gypsum in the aggregate.Chemical process of sulphate attack.The sulphate ion hydrated calcium aluminate andor the calcium.

  • Micro-Deval Test for Evaluating the Quality of Fine

    The Ministry of Transportation has specifications for maximum magnesium sulfate soundness loss for concrete and asphalt fine aggregate. The limit for portland cement concrete and high-quality asphaltic concrete use is a maximum of 16 percent loss, and 20 percent for lower-quality asphaltic concrete

  • contents in fine aggregate to concrete

    Sulfate contents in fine aggregate to concrete sulfate contents in fine aggregate fo concrete permissible levels of chlorides and sulfates in aggregate feb 1 1996 the report lists chloride and sulfate content but i dont know how to levels of recycled concrete aggregates in portland cement. more.

  • Standard Test Method for Soundness of Aggregates by Use of

    4.2 Values for the permitted-loss percentage by this test method are usually different for fine and coarse aggregates, and attention is called to the fact that test results by use of the two salts differ considerably and care must be exercised in fixing proper limits in any specifications that include requirements for these tests. The test is usually more severe when magnesium sulfate is used

  • SOUNDNESS OF AGGREGATE USING SODIUM SULFATE OR

    4.2 Preparing Concrete Fine Aggregate: 4.2.1 Concrete fine aggregate consists of all concrete aggregate passing a 4.75 mm (No. 4) sieve, except for mineral filler. 4.2.2 Reduce the sample to test size shown in Tex-401-A. 4.2.3 Thoroughly wash the fine aggregate sample over a 300 m (No. 50) sieve, dry to constant mass in oven.

  • Long-term sulfate attack on recycled aggregate concrete

    The effect of recycled concrete aggregate (RCA) on concrete performance against external sulfate attack (ESA) is not yet fully known. In this paper, recycled aggregate concretes (RAC) with 0, 50, 75 and 100% of RCA contents were evaluated after 10 years of exposure immersed in 50g/l sodium sulfate solution. Sulfate ingress profiles were obtained by wet chemical analyses and FRX.

  • BS EN 12620:2013 Aggregates for concrete

    - Water soluble sulfate content of recycled aggregates Chlorides Carbonate content for concrete pavement surface courses of fine, and all-in aggregates Other constituents Constituents which alter the rate of setting and hardening of concrete Constituents which affect the volume stability of air-cooled blast furnace slag. Durability

  • Deterioration Process of Concrete Exposed to Internal

    The results showed that significant expansion and great loss in compressive strength did not occur in concrete if the content of SO3 lay below 1.5% and 3% in fine and coarse aggregates, respectively. The concentration of sulfate ions in concrete was not enough to form new a phase of gypsum.

  • sulfate contents in fine aggregate to concrete

    sulfate contents in fine aggregate to concrete. The sulfate content in fine aggregate contains sulfate higher than the acceptable limits in most of the fine aggregate in Middle East countries Al-Kadhimi and Hamid 1983 Al-Ameeri and Issa 2013 results show that the fresh properties such as decreased workability of self-compacting concrete is passively influenced from sulfate also the .

  • EFFECTIVE SULFATE CONTENT IN CONCRETE INGREDIENTS

    Jul 07, 2015· Specifications usually put upper limits of SO 3 content in cement, aggregate and concrete. The upper limit of SO 3 content is calculated assuming that sulfates from all concrete ingredients have the same effect. Based on the results of an extensive experimental program, it is suggested to adopt the effective sulfate concept.

  • SOUNDNESS OF AGGREGATE USING SODIUM SULFATE OR

    4.2 Preparing Concrete Fine Aggregate: 4.2.1 Concrete fine aggregate consists of all concrete aggregate passing a 4.75 mm (No. 4) sieve, except for mineral filler. 4.2.2 Reduce the sample to test size shown in Tex-401-A. 4.2.3 Thoroughly wash the fine aggregate sample over a 300 m (No. 50) sieve, dry to constant mass in oven.

  • ITEM 73 AGGREGATES 73.01 FINE AGGREGATE FOR

    73.03 COARSE AGGREGATE FOR CONCRETE Coarse aggregate for any type or class of Portland Cement shall consist of crushed stone or crushed or uncrushed gravel, unless otherwise specified. Coarse aggregate for Portland Cement Concrete base and pavement shall be furnished in two sizes: Size No. 4 and Size No. 67, as shown in Item 73.19.

  • Sulphate Content Testing Of Aggregate

    Sulphate Content Testing Of Aggregate. Sulphate attack on concrete is a chemical process where sulphate ions attack components of cement paste.Fly ash, aggregate, and admixtures.Portland cement might be over-sulphated.Presence of natural gypsum in the aggregate.Chemical process of sulphate attack.The sulphate ion hydrated calcium aluminate andor the calcium.

  • BS EN 12620:2013 Aggregates for concrete

    - Water soluble sulfate content of recycled aggregates Chlorides Carbonate content for concrete pavement surface courses of fine, and all-in aggregates Other constituents Constituents which alter the rate of setting and hardening of concrete Constituents which affect the volume stability of air-cooled blast furnace slag. Durability

  • HOW FINE AGGREGATES AFEECTS CONCRETE MIX DESIGN

    Fine aggregate is on of the major constituents of concrete which can influence concrete mix design substantially. Various factors such as fine aggregate fineness modulus, moisture content, specific gravity, and silt content affect the mix proportions of concrete. Fineness modulus specifies how much fine aggregate is required in a given mix design. Fine aggregate moisture

  • How to Calculate Cement, Sand and Aggregate required for 1

    Density of concrete = 2400 kg/cum. So, 1 bag of cement produces = 400/2400 = 0.167 cum. No. of bags required for 01 cum of concrete = 1/0.167 = 5.98 bags ~ 6 bags. From above, if the concrete mix is 1:2:4,to get a cubic meter of concrete we require. 1.Cement = 6 bags = 300 kgs. 2.Fine Aggregate = 115/0.167 = 689 kg

  • Cement Standards and Concrete Standards

    ASTM's cement and concrete standards are instrumental in the evaluation and testing of concrete, cement, and aggregates. Concrete can have different properties depending upon the mixture that is used in creating it, which contains cement, chemical admixtures, and aggregates.

  • Aggregate in Concrete The Concrete Network

    Fine aggregate should fall within gradation limits provided in ASTM C 33, Section 6. If there is a deficiency in a locally available fine aggregate, concrete may benefit from the addition of air entrainment, additional cement, or a supplemental cementitious material (SCM) to

  • Permissible Levels Of Chlorides And Sulfates In Stone

    Sulfate Contents In Fine Aggregate Fo Concrete. Permissible levels of chlorides and sulfates in aggregate feb 1, 1996 the report lists chloride and sulfate content, but i dont know how to levels of chlorides and sulfates in coarse and fine aggregates used in concrete. → Chat Online

  • Aggregates for Concrete Memphis

    aggregates cannot be overemphasized. The fine and coarse aggregates generally occupy 60% to 75% of the concrete volume (70% to 85% by mass) and strongly influ-ence the concrete’s freshly mixed and hardened proper-ties, mixture proportions, and economy. Fine aggregates (Fig. 5-1) generally consist of natural sand or crushed

  • Micro-Deval Test for Evaluating the Quality of Fine

    Quality of Fine Aggregate for Concrete and Asphalt c. A. ROGERS, M. L. BAILEY, AND B. PRICE The sulfate soundness test has been used for many years for evaluating the physical suitability of fine aggregate. This test suf­ fers from poor within-laboratory and multilaboratory precision; it is a time-consuming and expensive test.

  • (PDF) Effect of aggregates with high gypsum content on the

    Sulfates in fine aggregate are a major problem when it exists in excessive amount especially in the Middle East and Iraq. Most of sulfate salts in fine aggregate are composed of calcium, magnesium

  • Contact Us

    Company Address

    Pudong New Area, Shanghai, China.

    E-mail Address

    [email protected]

    Sales Hotline

    0086-371-86162511

    You can reach us by:

    If you are interested in our company or products, welcome to visit our company or local offices; you can also get contact with us through online consulting, demand table submission, e-mails and telephones. Our staff shall wholeheartedly provide product information, application knowledge and good service for you.
    Copyright © 2019 SKD Industry & Technology Group Co., Ltd.