sulfate resistance of limestone cement concrete exposed to

Leave Comment

Sulfate resistance of limestone cement concrete

2012-9-1  This paper deals with the sulfate resistance of limestone cement concrete exposed to combined chloride and sulfate environment at low temperature (5 °C), taking under consideration the concomitant presence of chlorides, as well as the limestone content of the cements used.

Get price

Sulfate resistance of limestone cement concrete

Concretes containing limestone, as cement constituent and/or as aggregate, suffered from the thaumasite form of sulfate attack, which was accompanied by brucite and secondary gypsum formation. Limestone cement concretes exhibited higher deterioration degree compared to the concrete made without limestone cement. The disintegration was more severe and rapid, the higher the limestone content of the cement used. Chlorides inhibit sulfate attack

Get price

Sulfate resistance of portland-limestone cement

2020-7-30  As many detailed reviews have indicated, the incorporation of limestone in amounts greater than about 10–15% will generally worsen the performance of a neat cement, non-sulfate resistant system , exposed to external sulfates. In addition, upon exposure to sulfate solutions at low temperatures, increasing limestone contents of non-sulfate resistant systems increase the severity of the thaumasite form of sulfate

Get price

Sulfate Resistance of Blended Cements (Limestone Illite ...

2021-2-3  structure refinement and permeability reduction. However, in most field applications, concretes exposed to sulfate attack are cast in situ and thus, these are exposed to sulfate since early ages. This paper evaluates the sulfate resistance of an illitic-calcined clay and limestone filler when the cement is exposed

Get price

Sulfate resistance of calcined clay – Limestone –

2019-2-1  This study focusses on sulfate resistance of calcined clay (CC) – limestone (L) – Portland cements for mortars exposed to a 0.11 M Na 2 SO 4 solution at 5 and 20 °C after a hydration period of 91 days. The pozzolanicity, compressive strength, pore structure, and sulfate resistance of mortars containing laboratory-made metakaolin or calcined montmorillonite and limestone have been

Get price

Sulfate Resistance of Blended Cements (Limestone

This paper evaluatesthe sulfate resistance of an illitic-calcined clay and limestone filler when the cement is exposed immediately to aggressive environments. In this paper, the external sulfate resistance of blended cements containing 30% replacement of limestone filler and/or calcined clay (C30F, C30CC and C15F15CC) are analysed.

Get price

Resistance to Sulfate Attack of Mixtures with Limestone ...

2016-5-31  0.40, were exposed to a sulfate-rich aqueous solution (10% by Na2SO4) at 20°C and 5°C. There was no evidence of ettringite or thaumasite formation related to ... establish if the concrete structures made of limestone-portland blended cements ... There is no significant difference in the sulfate resistance of cement pastes

Get price

Field Performance of Portland Limestone Cement

2019-9-18  This paper presents data from a field test program to evaluate the sulphate resistance of concrete produced with varying limestone contents (0–15%) and supplementary cementitious materials (SCM) contents in order to evaluate the risk of thaumasite formation, which is expedited at cold temperatures (0–10 ℃).

Get price

Sulfate Resistance of Portland and Slag Cement

2017-5-1  Title: Sulfate Resistance of Portland and Slag Cement Concretes Exposed to Sodium Sulfate for 38 Years. Author(s): Fatemeh Alapour and R. Douglas Hooton. Publication: Materials Journal. Volume: 114. Issue: 3. Appears on pages(s): 477-490. Keywords: concrete durability; ettringite; slag; sulfate attack. Date: 5/1/2017. Abstract:

Get price

Use of mineral admixtures to improve the resistance

2013-3-1  It is obvious that the use of mineral admixtures improved the resistance of the limestone cement concrete against sulfate attack at low temperature. Fly ash, blastfurnace slag and metakaolin showed the best behavior, while natural pozzolana presented only a limited improvement of concrete’s sulfate resistance.

Get price

Sulfate Resistance of Blended Cements (Limestone Illite ...

2021-2-3  to sulfate attack are cast in situ and thus, these are exposed to sulfate since early ages. This paper evaluates the sulfate resistance of an illitic-calcined clay and limestone filler when the cement is exposed immediately to aggressive environments. In this paper, the external sulfate resistance of blended

Get price

Sulfate Resistance of Blended Cements (Limestone

This paper evaluatesthe sulfate resistance of an illitic-calcined clay and limestone filler when the cement is exposed immediately to aggressive environments. In this paper, the external sulfate resistance of blended cements containing 30% replacement of limestone filler and/or calcined clay (C30F, C30CC and C15F15CC) are analysed.

Get price

Resistance of Sulfate Attack of Mixtures with

2003-6-1  Sound and cracked specimens of cement pastes, all at a given water/binder ratio of 0.40, were exposed to a sulfate-rich aqueous solution (10% by Na2SO4) at 20°C and 5 C. There was no evidence of ettringite or thaumasite formation related to the sulfate attack in the sound specimens independently of the temperature and cement type.

Get price

Resistance to Sulfate Attack of Mixtures with Limestone ...

2016-5-31  0.40, were exposed to a sulfate-rich aqueous solution (10% by Na2SO4) at 20°C and 5°C. There was no evidence of ettringite or thaumasite formation related to ... establish if the concrete structures made of limestone-portland blended cements ... There is no significant difference in the sulfate resistance of cement pastes

Get price

Sulfate Resistance of Blended Cements (Limestone

This paper evaluates the sulfate resistance of an illitic-calcined clay and limestone filler when the cement is exposed immediately to aggressive environments. In this paper, the external sulfate resistance of blended cements containing 30% replacement of limestone filler and/or calcined clay (C30F, C30CC and C15F15CC) are analysed.

Get price

Field Performance of Portland Limestone Cement

2019-9-18  Abstract. This paper presents data from a field test program to evaluate the sulphate resistance of concrete produced with varying limestone contents (0–15%) and supplementary cementitious materials (SCM) contents in order to evaluate the risk of thaumasite formation, which is expedited at cold temperatures (0–10 ℃).

Get price

Sulfate Attack of Cement-Based Material with

2008-8-1  The cement used is ordinary Portland cement with grade of 42.5 from Huaxin Cement Company of Hubei Province. It has a density of 3.1 g/cm 3 and specific surface area of 350 m 2 /kg (Blaine). The limestone from Huangshi City was ground to a specific surface area of 400 m 2 /kg (Blaine). The chemical composition of the cement and the limestone are shown in Table 1.

Get price

Sulfate resistance of concrete produced with ... - Slag

2019-4-2  without limestone are not sulfate-resistant. 2. In the field exposure, for an equal level of SCMs, the presence of limestone had no impact on sulfate resistance of concrete. 3. In the laboratory and based on visual condition, PLC15 required 50% slag for equal performance to GU cement with 40% slag. However, also based on similar visual ...

Get price

Sulfate attack in concrete - understanding-cement

Sulfate attack in concrete and mortar. Sulfate attack can be 'external' or 'internal'. External: due to penetration of sulfates in solution, in groundwater for example, into the concrete from outside. Internal: due to a soluble source being incorporated into the concrete at the time of mixing, gypsum in the aggregate, for example. External sulfate

Get price

Sulfate Resistance of Blended Cements (Limestone

This paper evaluatesthe sulfate resistance of an illitic-calcined clay and limestone filler when the cement is exposed immediately to aggressive environments. In this paper, the external sulfate resistance of blended cements containing 30% replacement of limestone filler and/or calcined clay (C30F, C30CC and C15F15CC) are analysed.

Get price

Resistance of Sulfate Attack of Mixtures with

2003-6-1  Sound and cracked specimens of cement pastes, all at a given water/binder ratio of 0.40, were exposed to a sulfate-rich aqueous solution (10% by Na2SO4) at 20°C and 5 C. There was no evidence of ettringite or thaumasite formation related to the sulfate attack in the sound specimens independently of the temperature and cement type.

Get price

Resistance to Sulfate Attack of Mixtures with Limestone ...

2016-5-31  0.40, were exposed to a sulfate-rich aqueous solution (10% by Na2SO4) at 20°C and 5°C. There was no evidence of ettringite or thaumasite formation related to ... establish if the concrete structures made of limestone-portland blended cements ... There is no significant difference in the sulfate resistance of cement pastes

Get price

Sulfate Resistance of Blended Cements (Limestone

This paper evaluates the sulfate resistance of an illitic-calcined clay and limestone filler when the cement is exposed immediately to aggressive environments. In this paper, the external sulfate resistance of blended cements containing 30% replacement of limestone filler and/or calcined clay (C30F, C30CC and C15F15CC) are analysed.

Get price

Sulfate Attack of Cement-Based Material with

2008-8-1  The cement used is ordinary Portland cement with grade of 42.5 from Huaxin Cement Company of Hubei Province. It has a density of 3.1 g/cm 3 and specific surface area of 350 m 2 /kg (Blaine). The limestone from Huangshi City was ground to a specific surface area of 400 m 2 /kg (Blaine). The chemical composition of the cement and the limestone are shown in Table 1.

Get price

Low Temperature Sulfate Resistance of Concrete

Portland-limestone cement with up to 15% interground limestone was included in the Canadian Standard A3000 for Hydraulic Cements in 2008. However, due to the lack of data on sulfate resistance of concrete especially the potential for thaumasite sulfate attack at low temperatures, the use of portland-limestone cement in concretes subjected to moderate or severe sulfate exposures, even when ...

Get price

Sulfate resistance of concrete produced with ... - Slag

2019-4-2  without limestone are not sulfate-resistant. 2. In the field exposure, for an equal level of SCMs, the presence of limestone had no impact on sulfate resistance of concrete. 3. In the laboratory and based on visual condition, PLC15 required 50% slag for equal performance to GU cement with 40% slag. However, also based on similar visual ...

Get price

Accelerated Test for Measuring Sulfate Resistance of ...

2000-12-13  hydrate, the primary strength-giving component of the cement paste. External sulfate attack on concrete may lead to cracking, spalling, increased permeability, and strength loss. Sulfate damage to concrete typically starts at the surface exposed to the sulfate environment and sulfate containing salt that forms on the concrete surface.

Get price

RESPONSE OF PORTLAND LIMESTONE CEMENT

2020-10-16  mixtures exhibited better resistance to de-icing salts due to synergistic physical and chemical actions of limestone in the cementitious matrix. The resistance of concrete exposed to de-icing salts is a function of physical penetrability (magnitude of intruding solution), amount of aluminate in cement and content

Get price

Evaluation of Sulfate Resistance of Portland Cement ...

2015-9-30  Evaluation of Sulfate Resistance of Portland Cement Mortars Containing Low-Carbon Rice Husk Ash Harish Kizhakkumodom Venkatanarayanan1 and Prasada Rao Rangaraju, P.E., M.ASCE2 Abstract: In this study, a low-carbon rice husk ash (RHA) was used as a supplementary cementing material in cement mortars to evaluate

Get price
Contact us

Submit online

Please leave a message below and we will contact you as soon as possible.