The effect of chlorides on the thaumasite form of sulfate attack of limestone cement concrete containing mineral admixtures at low temperature

Sotiriadis, Konstantinos; Nikolopoulou, E.; Tsivilis, S.; Pavlou, A.; Chaniotakis, Emmanouil; Swamy, R.N.

doi:10.1016/j.conbuildmat.2013.02.014

Cited by 51 publications

(14 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similarly, Maes and de Belle [23] looked at CEM I, sulphate resisting cement and a 50% cement-PC slag blend and found that chlorides did not affect magnesium sulphate damage for CEM I and sulphate resistant cement at 20°C, but that there was increased degradation for the slag blend at 5°C. There appears to have been more emphasis on the effects of low temperatures, likely due to concerns over the thaumasite form of sulphate attack, where temperatures below 15°C are associated with thaumasite formation [12,23,[27][28][29][30][31]. Investigations into performance at higher temperatures are less common.…”

Section: Introductionmentioning

confidence: 99%

Expansion of CEM I and slag-blended cement mortars exposed to combined chloride-sulphate environments

Ukpata

Basheer

Black

2019

Cement and Concrete Research

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

Expansion of CEM I and slag-blended cement mortars exposed to combined chloride-sulphate environments

Ukpata

Basheer

Black

2019

Cement and Concrete Research

View full text Add to dashboard Cite

show abstract

“…Diffraction peaks of thaumasite around 9.2 , 16.0 , 18.5 , 19.3 , 23.5 , 26.0 , and 28.0 were discovered. 25,26 Diffraction peaks of calcite can be found in XRD patterns, and the reason is that it is a part of the cement from the beginning and its increase is a result of the carbonation reactions. The structure of thaumasite was similar to that of ettringite.…”

Section: Hydration Released Heatmentioning

confidence: 99%

“…The main hydration product was ettringite and C 3 AH 6 whether the LiAl-LDH was added in the CBGM or not. Diffraction peaks of thaumasite around 9.2 , 16.0 ,18.5 , 19.3 , 23.5 , 26.0 , and 28.0 were discovered 25,26. Diffraction peaks of calcite can be found in XRD patterns, and the reason is that it is a part of the cement from the beginning and its increase is a result of the carbonation reactions.…”

mentioning

confidence: 99%

Effect of water-to-binder ratio on the properties of CSA cement-based grouting materials with LiAl-LDH

Yang

Guan

2020

Advanced Composites Letters

View full text Add to dashboard Cite

The compressive strength of sulfoaluminate cement-based grouting materials (CBGMs) cannot meet the requirement of repair and reinforcement engineering in the presence of high water-to-binder ratio (w/b) of 0.5-1.2. Using nanotechnology, the mechanical property of the CBGM paste at different ages can be improved and our previous experimental results showed that lithium aluminum layered double hydroxides (LiAl-LDHs) with nanostructure can significantly increase the compressive strength of CBGM paste. In addition to the characteristics of nanomaterials, the performance of nanomaterials is also related to w/b of paste. In this work, the effect of w/b ratio on the compressive strength, hydration process, and products of calcium sulphoaluminate cement (CSA) CBGMs with and without LiAl-LDH was studied. Results indicate that with the increase of w/b from 0.6 to 1.0, the growth rate of compressive strength of CBGM paste with LiAl-LDH enhanced. Moreover, LiAl-LDH enhanced total hydration heat more effectively at a higher w/b and as the w/b increased from 0.6 to 1.0, the growth rate of hydration product boosted, which is the reason why the enhancement ratio of compressive strength of the paste was larger at high w/b.

show abstract

“…Perlot et al [7] reported that ternary-blended mix presents a real benefit for carbonation durability performances due to the refinement of the pore structure. Sotiriadis et al [8] reported that the use of MK in the limestone cement concrete retards and inhibits deterioration due to the sulfate attack and improves its durability.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Hydration and Optimal Strength Combinations of Cement-Limestone-Metakaolin Ternary Composite

Wang

2019

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

Metakaolin (MK) is an aluminosilicate pozzolan material and can contribute to property development of concrete due to the pozzolanic reaction. Limestone (LS) powder presents the dilution effect, nucleation effect, and chemical effect on hydration of cement. When metakaolin and limestone are used together, due to the additional chemical reaction between the aluminum phase in MK and limestone, the synergetic benefit can be achieved. This study presents a hydration model for cement-limestone-metakaolin ternary blends. Individual reactions of cement, metakaolin, and limestone are simulated separately, and the interactions among cement hydration, limestone reaction, and metakaolin reaction are considered through the contents of calcium hydroxide and capillary water. The hydration model considers the pozzolanic reaction of metakaolin, chemical and physics effects of limestone, and synergetic effect between metakaolin and limestone. Furthermore, the gel-space ratio of hydrating concrete is calculated using reaction degrees of binders and concrete mixtures. The strength development of ternary blends is evaluated using the gel-space ratio. Based on parameter analysis, the synergetic effect on strength development is shown and the optimal combinations of cement-limestone-metakaolin ternary blends are determined.

show abstract

The effect of chlorides on the thaumasite form of sulfate attack of limestone cement concrete containing mineral admixtures at low temperature

Cited by 51 publications

References 42 publications

Expansion of CEM I and slag-blended cement mortars exposed to combined chloride-sulphate environments

Expansion of CEM I and slag-blended cement mortars exposed to combined chloride-sulphate environments

Effect of water-to-binder ratio on the properties of CSA cement-based grouting materials with LiAl-LDH

Analysis of Hydration and Optimal Strength Combinations of Cement-Limestone-Metakaolin Ternary Composite

Contact Info

Product

Resources

About