effect of sulphate attack on self compacting concrete

  • Effect of Magnesium Sulphate on Self-Compacting Concrete

    the effect of RHA on concrete resistance to sulphate attack It has been reported that the addition of mineral admix- with SCC was investigated limitedly tures to concrete would enhance its resistance to sulphate Fly ash is divided into two classes: Class-F and Class- attack [2].

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  • Microstructural Changes in Self-Compacting Concrete by

    concrete elements such as foundations, floors, basement walls and sewage pipe systems The effect of sulphuric acid attack is more detrimental than that of external sulphate attack by sulphate salts due to two important aspects: the reaction with sulphate ions and the dissolution effect caused by hydrogen ions at low pH.

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  • Sulfate attack in concrete and mortar

    Sulfate attack in cement, mortar and concrete Cement is composed of mainly two minerals tri-calcium silicates (C3S) and di-calcium silicates (C2S) Upon hydration, the main reaction products are a calcium silicate gels (C-S-H) and calcium hydroxide Ca(OH)2 or CH in cement chemistry.

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  • Durability of self-consolidating concrete to ,

    Jan 22, 2008· Durability of self-consolidating concrete to combined effects of sulphate attack and frost action Durability of self-consolidating concrete to combined effects of sulphate attack and frost action Nehdi, M; Bassuoni, M 2008-01-22 00:00:00 The worldwide shift towards performance-based standards for concrete demands the advent of performance.

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  • Effect of Metakaolin in Self Compacting Concrete with sand

    EFFECT OF SULFATES IN FINE AGGREGATE ON SOME , Self compacting concrete (SCC) was developed to respond to the need for concrete that can , phenomenon is called sulfate attack The sulfate reacting with Ca(OH) 2 and with calcium aluminate hydrate (C-A-H) The products of reactions, gypsum and calcium sulphoaluminate have a.

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  • Sulphate Attack on Concrete

    Sulphate attack on concrete is a chemical breakdown mechanism where sulphate ions attack components of the cement paste The compounds responsible for sulphate attack on concrete are water-soluble sulphate-containing salts, such as alkali-earth (calcium, magnesium) and alkali (sodium, potassium) sulphates that are capable of chemically reacting with components of concrete.

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  • The Effect of Water-Cement Ratio on Sulfate Resistance of

    The Effect of Water-Cement Ratio on Sulfate Resistance of Self-Compacting Concrete with Bagasse Ash Previous study showed so many factors will contribute to the durability of concrete, such as cement content, water cement ratio, admixtures to.

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  • Research Article Effect of Magnesium Sulphate on Self

    Effect of Magnesium Sulphate on Self-Compacting Concrete , with high Permeability In this paper, the assessment of magnesium sulphate (MS) attack on concrete containing various ratios of the supplementary cementitious materials (SCM) was investigated for concrete containing FA, RHA, and GGBS with cement , and strong self-compacting.

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  • Study on Durability Characteristics of Self-Compacting

    concrete is determined by using tests such as: slump flow, T50, V-funnel, L-Box and U-box tests The durability of concrete is tested by acid resistance, sulphate attack and saturated water absorption at the age of 28, 56 and 90 days KEYWORDS: Self-compacting concrete, Fly ash, Saturated water absorption, Acid resistance.

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  • "Effect of Magnesium Sulphate on Self-Compacting Concrete

    In this paper, the assessment of magnesium sulphate (MS) attack on concrete containing various ratios of the supplementary cementitious materials (SCM) was investigated for concrete containing FA, RHA, and GGBS with cement replacement levels of 15%, 10%, and 5%, respectively, based on the selected samples from the concrete to the statement of.

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  • Concrete degradation

    Concrete degradation may have various causConcrete can be damaged by fire, aggregate expansion, sea water effects, bacterial corrosion, calcium leaching, physical damage and chemical damage (from carbonatation, chlorides, sulfates and non-distilled water)This process adversely affects concrete exposed to these damaging stimuli.

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  • (PDF) Sulphate attack

    The chapter Reviews the Classic form of sulphate attack, the thaumasite form of sulphate attack (TSA) and delayed ettringite formation (DEF) The focus is on self-compacting.

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  • Self Compacting Concrete Using Quarry Dust

    Effect of Sulphate Attack on Self compacting Concrete H, OuchiM, 'Self Compacting Concrete', Journal of Advanced Concrete Technology, Vol-1, April 2003, pp 5-15 DWSHo etal, 'The use of quarry dust for SCC applications', Cement and Concrete Research 32 (2002), pp 505-511 , self compacting concrete using quarry dust pdf.

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  • Effect of sulfate on the properties of self compacting

    May 06, 2013· Effect of sulfate on the properties of self compacting concrete 2 1 , Steel fiber reinforced concrete, Steel fiberreinforced self compacting concrete, Sulfate attack, Internal sulfate attack1 INTRODUCTIONSelf compacting concrete (SCC) is a concrete which has the ability to flow by its ownweight and achieve good compaction without external.

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  • Performance of self-compacting concrete incorporating

    Oct 15, 2016· The present study investigates the performance of self-compacting concrete (SCC) and self-compacting sand concrete (SCSC) incorporating recycled concrete fines and aggregate under different sulphate environments Similar mixtures incorporating natural aggregates and natural pozzolana were also tested for comparison.

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  • INFLUENCE OF SELF-COMPACTING CONCRETE

    Sulfuric acid attack on concrete has been reported for over a century Many scientific papers deal with the issue of concrete damage due to sulfate and sulfuric attack The introduction of self-compacting concrete introduces new questions related to the behaviour of powder-rich mixtures in a sulfate.

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  • Thaumasite sulphate attack on self-compacting concrete

    The paper deals with durability of Self-Compacting Concrete with limestone filler during Thaumasite Sulphate Attack For this purpose six concrete with varying amounts of limestone filler, particle size of limestone filler, pressure height during casting and mixing order were studied One normal concrete (without limestone filler) with vibrator compaction was studied in parallel.

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  • INTERNATIONAL JOURNAL OF CIVIL ENGINEERING AND

    Keywords: Self compacting concrete, Steel fiber, Steel fiber reinforced concrete, Steel fiber reinforced self compacting concrete, Sulfate attack, Internal sulfate attack 1 INTRODUCTION Self compacting concrete (SCC) is a concrete which has the ability to flow by its own weight and achieve good compaction without external vibration.

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  • STUDIES ON EFFECT OF MINERAL ADMIXTURES ON

    the durability of plain self compacting concrete and fibre reinforced self compacting concrete, a comprehensive study which involves durability parameters loss of weight and loss in compressive strength of specimens due to acid attack , sulphate attack are not available for high strength self.

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  • Performance of High-volume Fly Ash Self-compacting

    Portland cements In this study the durability of two high-compacting concrete, -volume fly ash self HVFASCC, mixes exposed to the effects of two sulfate aggressive solutions was investigated The fly ash, class F, contents for these mixes were 50 and 60 percent by weight of Portland cement The external sulfate attack was simulated by.

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  • Effect of Sulphate Attack on Self compacting Concrete

    The loss in mass, compressive strength and sorptivity of cubes were found to be negligible under Sulphate attack It was observed that limestone and quarry dust powder resists Sulphate attack within tolerable limits Referenc Shankar HSanni, 'Effect of Viscosity Modifying Admixtures On Self Compacting Concrete,' CE&CR JULY 2007, pp 66-71.

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  • Effect of Magnesium Sulphate on Self-Compacting Concrete

    To receive news and publication updates for Advances in Materials Science and Engineering, enter your email address in the box below , Effect of Magnesium Sulphate on Self-Compacting Concrete Containing Supplementary Cementitious Materials , it was possible to evaluate the effect of sulphate attack on concrete mixes by testing the changes.

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  • Durability of self-consolidating concrete to ,

    Jan 22, 2008· Durability of self-consolidating concrete to combined effects of sulphate attack and frost action Durability of self-consolidating concrete to combined effects of sulphate attack and frost action Nehdi, M; Bassuoni, M 2008-01-22 00:00:00 The worldwide shift towards performance-based standards for concrete demands the advent of performance tests that combine more than one.

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  • Durability of self-consolidating concrete ,

    Oct 23, 2008· Abstract This study investigates the durability of a wide scope of self-consolidating concrete (SCC) mixture designs to sodium sulfate attack The mixture design variables included the type of binder (single, binary, ternary and quaternary), air-entrainment, sand-to-aggregate ratio and hybrid fibre reinforcement.

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