Effect of Mineral Admixtures on the Sulfate Resistance of High-Strength Piles Mortar

Hu, Yan‐Yan; Ma, Linlin; He, Tingshu

doi:10.3390/ma13163500

Cited by 6 publications

(3 citation statements)

References 35 publications

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“…In spite of using mineral admixture to increase the durability characteristics of building materials bonded by cement [20], CaA has been mentioned in literature as an accelerator and water reducer in silica fume blended cement [21], but research on its use as a modifier for concrete properties is very rare. One study mentioned the use of calcium acetate as a waste solutions from the treatment of recycled concrete aggregate with acetic acid as an admixture [22].…”

Section: Resultsmentioning

confidence: 99%

“…The concrete mixes of 0.48 w/c, incorporated with 5.1% CaA were formulated, molded, and cured in water for different ages and then tested for compressive strength. The samples cured for 28 days were tested for water absorption at different temperatures (20,30,40, and 55 o C) after an immersion duration of 24 hours. Figure 1 shows images of some sides of the experimental work.…”

Section: Experimental Part 21 Materialsmentioning

confidence: 99%

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New concrete composites incorporated with calcium acetate as admixture: The Impact of Curing Age on Strength and the Effect of Temperature on Water Absorption

Abed¹,

Mojtahedi²,

Lotfollahi-Yaghin³

2023

E3S Web of Conf.

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In previous work, concrete mixes incorporated with different types of acetates (inorganic and organic) were formulated, cured for 28 days in water, and then tested for compressive strength. The effect of the water-to-cement ratio and the acetate content was optimized using a central composited design based on the response surface methodology approach. The results confirmed that the optimum compressive strength was achieved for the mixes incorporated with calcium acetate (CaA) using of 0.48 water-to-cement ratio. In the current work, the effect of curing age on compressive strength and density was studied for the optimum mixes. Also, the water absorption of the mixes carried out by immersion test was assessed at different temperatures (25-55 °C). Microscopic observations were also noted. The results obtained confirmed that the compressive strength and density of the CaA-concrete mix increase with increasing the curing age. The thermodynamic study of water absorption assured the dependence of water absorption on temperature. The activation energies depicted from the Arrhenius relation and the decrease in the water absorption rate for the concrete incorporated with CaA are considered as an indicator of decreasing the porosity of the concrete mixes compared to the control mixes without CaA. The findings assured that the modified mixes with CaA are promising construction materials owing to their outstanding strength and lower water absorption rates compared to conventional concrete.

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Section: Resultsmentioning

confidence: 99%

Section: Experimental Part 21 Materialsmentioning

confidence: 99%

New concrete composites incorporated with calcium acetate as admixture: The Impact of Curing Age on Strength and the Effect of Temperature on Water Absorption

Abed¹,

Mojtahedi²,

Lotfollahi-Yaghin³

2023

E3S Web of Conf.

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show abstract

“…According to Chinese standards, the carbon emissions from the non-autoclaved curing process were reduced by 17.2% compared to autoclaved curing pipe piles (AP) [4]. In addition, compared to AP concrete, non-autoclaved pipe piles (NAP) concrete exhibited significant improvements in frost resistance, sulfate resistance, strength, and other properties [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Study on the Dynamic Performance and Damage Evaluation of Rubber-Modified Non-Autoclaved Concrete Pipe Piles under Axial Drop Hammer Impact

Lan,

Liu,

Yang

et al. 2024

Buildings

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In order to improve the weak impact resistance of non-autoclaved concrete pipe piles, this study replaced sand in the concrete with rubber particles of different volume contents to obtain rubber-modified non-autoclaved concrete pipe piles (with volume contents of 0%, 5%, 10%, and 15%). The dynamic impact response characteristics of rubber-modified non-autoclaved concrete pipe piles were obtained through large-scale axial hammer impact experiments. The results indicate the following. (1) Non-autoclaved concrete pipe piles without rubber additives were prone to expansion deformation instability under impact. When the rubber content was 10%, the expansion deformation of the piles was the weakest, and the state was the most stable. (2) When the impact energy exceeded 48 kJ, the deformation energies of piles with 5% and 10% rubber contents significantly increased. (3) The damage levels of the piles after hammer impact were classified into four grades: no damage, mild damage, moderate damage, and severe damage. When the impact energy was greater than or equal to 48 kJ, rubber-modified non-autoclaved concrete pipe piles exhibited damage. The zone with no damage for piles with 10% rubber content was the smallest, making it less prone to damage under impact loads. The rubber-modified non-autoclaved concrete pipe piles with 10% rubber content not only had excellent impact resistance but also utilized the advantages of being environmentally friendly and energy-saving. They filled a certain knowledge gap in green building materials.

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The adsorption and diffusion behavior of chloride in recycled aggregate concrete incorporated with calcined LDHs

Gao,

Ji,

Liu

et al. 2024

Cement and Concrete Composites

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Effect of Mineral Admixtures on the Sulfate Resistance of High-Strength Piles Mortar

Cited by 6 publications

References 35 publications

New concrete composites incorporated with calcium acetate as admixture: The Impact of Curing Age on Strength and the Effect of Temperature on Water Absorption

New concrete composites incorporated with calcium acetate as admixture: The Impact of Curing Age on Strength and the Effect of Temperature on Water Absorption

Study on the Dynamic Performance and Damage Evaluation of Rubber-Modified Non-Autoclaved Concrete Pipe Piles under Axial Drop Hammer Impact

The adsorption and diffusion behavior of chloride in recycled aggregate concrete incorporated with calcined LDHs

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