CALL US

+86 17838360708

Sulfate Attack Slag Cement

Sulfate Attack Slag Cement

Sulfate Attack - Slag Cement

The use of slag cement is also an extremely effective way of reducing the potential for sulfate attack 1. How does Slag Cement Mitigate Sulfate Attack? The use of slag cement reduces the likelihood of sulfate attack in three ways: Slag cement does not contain C 3 A, so its addition in concrete dilutes the total amount of C 3 A in the system.

get price

About this site

Sep 01, 2012  The incorporation of slag altered the XRD pattern. Specifically, there was a drastic decrease in the gypsum formation. Gollop and Taylor analysed the sodium sulfate attack in plain and blended slag cement pastes and verified that, in both cases, the reaction led to an initial formation of ettringite, followed later by the formation of gypsum.

get price

About this site

Feb 01, 2002  Later, it was found that slag concrete had good durability in sulfate environment and the mode of degradation of slag concrete was different from that of OPC concrete. This paper considers effect of sulfate attack on AAS concrete that was prepared using slag activated by alkaline activator as the only binder. 2. Experimental2.1. Materials

get price

About this site

Dec 01, 2013  This paper analyses the effects of external sulfate attack (5% Na 2 SO 4 solution) on mechanical and microstructural properties of alkali-activated slag (AAS). Portland-slag cement (CEM II/А-S 42.5N) was used as a benchmark material. External sulfate attack led to a decrease in strength of CEM II, but not of AAS.

get price

About this site

Dec 30, 2020  This paper explored a novel method to inhibit sulfate attack in slag cement mortar under steam curing, by using ethylenediaminetetraacetic acid disodium (EDTA-2Na) to chelate calcium ions. 0.5 and 1% EDTA-2Na were used in slag cement mortars to evaluate the inhibition effect in sulfate solution (7.5% Na 2 SO 4 and MgSO 4 solution) for 360 days. The weight variation, compressive strength,

get price

About this site

We are not aware of any ACI document that cautions against combining Type V (sulfate-resisting) cement and slag for protection against sulfate attack. On the contrary, for very severe sulfate exposure, ACI 318 and ACI 201.2R include this combination as an option.

get price

About this site

Jun 30, 2020  Sulfate attack is one of the important reasons for the premature failure of cement-based materials. In this paper, the deterioration law of mortar by sulfate attack was investigated through expansion, mass change, relative dynamic elastic modulus (E rd) and the distribution of sulfate ion content.Moreover, the pore size distribution, corrosion products and three-dimensional crack

get price

Could a sulfate-resisting cement and slag cement be ...

We are not aware of any ACI document that cautions against combining Type V (sulfate-resisting) cement and slag for protection against sulfate attack. On the contrary, for very severe sulfate exposure, ACI 318 and ACI 201.2R include this combination as an option.

get price

Sulfate Attack on Alkali-Activated Slag Concrete Request PDF

This paper presents an investigation into durability of alkali-activated slag (AAS) concrete in sulfate environment. Two tests were used to determine resistance of AAS concrete to sulfate attack ...

get price

The effect of attack of chloride and sulphate on ground ...

The effect of attack of chloride and sulphate on ground granulated blast furnace slag concrete Deepankar K. Ashish*1,2, Bhupinder Singh3a and Surender K. Verma1b 1Department of Civil Engineering, PEC University of Technology, Chandigarh160-012, India 2Maharaja Agrasen Institute of Technology, Maharaja Agrasen University, Baddi 174103, India

get price

Georgia Chapter ACI Luncheon Benefits of Slag Cement In ...

What is Sulfate Attack? A form of concrete deterioration caused by sulfates (SO 4) Concrete in contact with some soils, salt water or wastewater Water soluble sulfates react with the hydration product of C 3A and calcium hydroxide CA(OH)2 to create ettringite Slag cement can be used to reduce sulfate attack potential Slag cement does not ...

get price

Slag Cement: The Other SCM - Institute for Transportation

Apr 08, 2019  – Sulfate Resistance • Slag cement will mitigate sulfate attack • Slag cement does not contain C 3 A – dilutes the C 3 A from the portland cement • Slag cement reduces permeability – sulfate solutions limited from penetrating the concrete • Slag cement consumes CH – forms more C -S-H to strengthen the concrete and resist ...

get price

Slag Cement Association

Slag cement is a recovered byproduct of the iron manufacturing process and can be used to replace a portion of portland cement in concrete mix design. The use of slag cement has demonstrated long-term performance enhancements allowing designers to reduce the environmental footprint of concrete while ensuring improved performance and increased ...

get price

The Difference in Slag Cement and Fly Ash - Slag Cement News

Creating concrete with more consistent results helps ensure structures can withstand freeze thaw conditions, mitigate ASR and sulfate attack, and helps the concrete perform to its peak potential. “The effectiveness of class F fly ash in controlling expansion due to ASR is well established.However, the effect of fly ash varies considerably ...

get price

The Impact of Chloride and Sulphate Aggressiveness on the ...

The article discusses the results of examining the impact of aggressive solutions on specimens of mortars with a slag-ash binder. Bar specimens were exposed to unidirectional diffusion of sodium chloride and sodium sulphate for 90 days. Next, the specimens were subjected to flexural and compressive strength tests, ion content tests, XRD phase composition tests, and microstructural SEM-EDS tests.

get price

Slag Cement Concrete Application

Slag Cement in High Performance Concrete - SCIC #15 High performance concrete (HPC) offers enhanced properties not found in conventional concrete, including higher compressive and flexural strength, lower permeability, lower heat generation, and greater resistance to alkali-silica reactivity and sulfate attack.

get price

Fly Ash Slag Geopolymer Concrete: Resistance to Sodium and ...

Dec 12, 2016  This study evaluated the performance of geopolymer concretes based on a binary mixture of fly ash (FA) with blast furnace slag (GBFS) in an 80 / 20 ratio and activated with a mixture of sodium silicate and sodium hydroxide. FA/GBFS and portland cement (OPC) concretes were immersed in 5% by weight sodium sulfate and magnesium sulfate solutions.

get price

Influence of Titanium Dioxide Nanoparticles on the Sulfate ...

In this study, the effects of titanium dioxide (TiO₂) nanoparticles on the sulfate attack resistance of ordinary Portland cement (OPC) and slag-blended mortars were investigated. OPC and slag-blended mortars (OPC:Slag = 50:50) were made with water to binder ratio of 0.4 and a binder to sand ratio of

get price

External sulfate attack on alkali-activated fly ash-blast ...

External sulfate attack on alkali-activated fly ash-blast furnace slag composite N. Dzˇunuzovic´, M. Komljenovic´ ⇑, V. Nikolic´, T. Ivanovic´ Institute for Multidisciplinary Research, University of Belgrade, Kneza Viseslava 1, 11000 Belgrade, Serbia highlights External sulfate attack on alkali-activated binder (AAB) and CEM II was tested.

get price

Experimental study of resistance of concrete to sulphate ...

【Abstract】 According to the new standard of China,the effect of water binder ratio and the strength grade and mineral mixture on the resistance of concrete to sulphate attack was studied.The results of the study show that,reducing water binder ratio to enhance the strength of concrete can improve the resistance of concrete to sulfate attack;adding fly ash or slag into concrete can also ...

get price

Alkaline cement mortars. Chemical resistance to sulfate ...

KEYWORDS: alkaline cement mortars, alkali activated slag . cements, durability, sulfate and sea water attack . 1. INTRODUCTION . It is well known the high durability of concretes prepared with slag cements in sulfate and seawater . environments (1).

get price

Effect of Al in slag blended cement paste under sulfate attack

Oct 07, 2017  Unilateral sulfate attack of cementitious materials containing 40% slag with different water to binder ratios was investigated. The results showed that the degradation of slag blended cement pastes was nearly from the corners of paste surface with cracking and spallings, water-to-binder(w/b) ratio made a significant sense to the damage that low w/b ratio led to little weight loss, less ...

get price

Sulfate Attack on Cement-Stabilized Sand Journal of ...

Jun 12, 1997  Sulfate attack of cement-stabilized soils is a relatively infrequent problem, but it is highly destructive when it occurs. Currently, there are no firm criteria for identifying when sulfate attack of a cement-stabilized soil is a potential problem nor are there established methods of preventing the attack. ... Fly Ash Slag Geopolymer Concrete ...

get price

Slag Cement Concrete Durability

This information sheet includes a bar graph measuring the effects on permeability of using different quantities of slag cement in concrete. View Download Mitigating Sulfate Attack - SCIC #7 Sulfate attack is a common form of concrete deterioration that occurs when concrete comes into contact with water containing sulfates.

get price

The effect of attack of chloride and sulphate on ground ...

The effect of attack of chloride and sulphate on ground granulated blast furnace slag concrete Deepankar K. Ashish*1,2, Bhupinder Singh3a and Surender K. Verma1b 1Department of Civil Engineering, PEC University of Technology, Chandigarh160-012, India 2Maharaja Agrasen Institute of Technology, Maharaja Agrasen University, Baddi 174103, India

get price

What is sulfate attack? - Beton Consulting Engineers

Jun 07, 2021  Slag cement also adsorbs chlorides, so it’s an excellent choice for concrete in a marine environment. Sadly, there’s no such thing as sulfate- proof portland cement concrete. Particularly when the sulfates occur as MgSO 4 , it’s just a matter of time before the concrete disintegrates.

get price

Sulphate Attack on Concrete and Its Prevention ...

Apr 22, 2020  Ground-granulated blast furnace slag (GGBFS) is quite effective in controlling sulfate attack, with replacement levels from 25 to 50% providing moderate to severe exposure protection, respectively. Mortars containing 45 to 72% GGBFS (by mass replacement of cement) Hooton and Emery (1990) ACI 201.2R-01 recommends the use of between 40 and 70 % ...

get price

(PDF) Effect of Fly Ash on Resistance to Sulfate Attack of ...

Materials such as fly ash, slag, silica fume and high alumina cement can improve concrete properties such as compressive strength, abrasion resistance and resistance to sulfate and acid attack [34 ...

get price

External sulfate attack on alkali-activated fly ash-blast ...

External sulfate attack on alkali-activated fly ash-blast furnace slag composite N. Dzˇunuzovic´, M. Komljenovic´ ⇑, V. Nikolic´, T. Ivanovic´ Institute for Multidisciplinary Research, University of Belgrade, Kneza Viseslava 1, 11000 Belgrade, Serbia highlights External sulfate attack on alkali-activated binder (AAB) and CEM II was tested.

get price

Slag Cement Concrete Application

Slag Cement in High Performance Concrete - SCIC #15 High performance concrete (HPC) offers enhanced properties not found in conventional concrete, including higher compressive and flexural strength, lower permeability, lower heat generation, and greater resistance to alkali-silica reactivity and sulfate attack.

get price

The Difference in Slag Cement and Fly Ash - Slag Cement News

Creating concrete with more consistent results helps ensure structures can withstand freeze thaw conditions, mitigate ASR and sulfate attack, and helps the concrete perform to its peak potential. “The effectiveness of class F fly ash in controlling expansion due to ASR is well established.However, the effect of fly ash varies considerably ...

get price

Influence of Titanium Dioxide Nanoparticles on the Sulfate ...

Feb 28, 2018  In this study, the effects of titanium dioxide (TiO₂) nanoparticles on the sulfate attack resistance of ordinary Portland cement (OPC) and slag-blended mortars were investigated.

get price

Ground granulated blast-furnace slag - Wikipedia

GGBS cement is routinely specified in concrete to provide protection against both sulfate attack and chloride attack. GGBS has now effectively replaced sulfate-resisting Portland cement (SRPC) on the market for sulfate resistance because of its superior performance and

get price

The Impact of Chloride and Sulphate Aggressiveness on the ...

The article discusses the results of examining the impact of aggressive solutions on specimens of mortars with a slag-ash binder. Bar specimens were exposed to unidirectional diffusion of sodium chloride and sodium sulphate for 90 days. Next, the specimens were subjected to flexural and compressive strength tests, ion content tests, XRD phase composition tests, and microstructural SEM-EDS tests.

get price

Sulfate Resistance of Recycled Aggregate Concrete with ...

The object of this work was to develop a green concrete with an improved sulfate resistance. In this new type of concrete, recycled aggregates from construction and demolition (CD) waste were used as coarse aggregates, and granulated blast furnace slag (GGBS) and fly ash-based geopolymer were used to totally replace the cement in concrete.

get price