Utilization of Several Industrial Wastes as Raw Material for Calcium Sulfoaluminate Cement

Julphunthong, Phongthorn; Joyklad, Panuwat

doi:10.3390/ma12203319

Cited by 24 publications

(10 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…SP was blended with acrylic acid (AA) and ammonium persulfate (APS) to prepare the adhesive precursor. Calcium sulfoaluminate (CSA), the main component of a commercial cement, , was then introduced into the adhesive mixture to induce polymerization of the AA in order to initiate the adhesive hardening process. CSA was capable of absorbing the water present in the “water layer” between the adhesive and the plywood veneers, which induced the hydrolysis of CSA, thereby forming inorganic crystals (ettringite and Al(OH) 3 ) that underwent chemical cross-linking with the organic matrix, similar to the oyster adhesive .…”

Section: Introductionmentioning

confidence: 99%

Novel Bionic Soy Protein-Based Adhesive with Excellent Prepressing Adhesion, Flame Retardancy, and Mildew Resistance

Pang

Shen

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Soy protein (SP)-based adhesives can replace traditional aldehyde-based adhesives for the manufacturing of wood-based panels. However, developing a SP-based adhesive with excellent prepressing bonding strength, flame retardancy, and mildew resistance remains a challenge. Herein, an inorganic crystal cross-linked hybrid SP adhesive was developed inspired by the “secreting–hardening” process of the mussel adhesive protein and the organic–inorganic hybrid adhesive system of the oyster. Calcium sulfoaluminate (CSA) was introduced into the adhesive mixture of SP and acrylic acid to induce the in situ polymerization of acrylic acid to achieve adhesive gelation. The generation of the inorganic crystals by hydration of CSA not only contributed to the formation of a stable cross-linked hybrid adhesive system for strong cohesion but also provided strong interfacial adhesion between the adhesive layers and the plywood veneers. As anticipated, the prepared plywood sample bonded with the hybrid adhesive gel had an excellent prepressing bonding strength of 544 kPa, representing a significant increase compared to that of the pure SP adhesive (19 kPa). Moreover, the generated inorganic crystals endowed the adhesive with excellent mildew resistance and flame retardancy. This study provides a novel and effective strategy for the preparation of high-performance SP-based adhesives.

show abstract

Section: Introductionmentioning

confidence: 99%

Novel Bionic Soy Protein-Based Adhesive with Excellent Prepressing Adhesion, Flame Retardancy, and Mildew Resistance

Pang

Shen

et al. 2021

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…In addition to its environmental benefits, CSA cement is commonly used for specific applications such as attaining high early and late strength and having a self-stressing material [ 14 , 16 , 17 , 23 ]. Recently, CSA cement has also been employed to reduce the alkali silica reaction [ 24 ], for waste stabilization [ 25 , 26 , 27 ], as an additive in the 3D printing of concrete [ 28 , 29 ], and to prepare low-carbon ecological ultra-high-performance concrete (UHPC) [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Managing the Heat Release of Calcium Sulfoaluminate Cement by Modifying the Ye’elimite Content

et al. 2023

View full text Add to dashboard Cite

Nowadays, calcium sulfoaluminate cement (CSA) is garnering a large amount of attention worldwide and is being promoted as a sustainable alternative to Portland cement for specific applications. This study aimed to control the heat release of CSA cement paste by choosing the appropriate composition. For this purpose, different calcium sulfoaluminate clinkers with up to 75 wt. % of ye’elimite were synthetized. Then, a reactivity study on the synthesized clinkers was conducted while varying the amount of gypsum added. The heat of hydration was measured by isothermal calorimetry. The influence of the ye’elimite content on the heat release and on the compressive strength was investigated. According to the findings, the amount of ye’elimite in the cement has a direct relationship with the heat release. The heat release as well as the mechanical performance increase with the increase in the ye’elimite content in the CSA cement. An equation allowing the prediction of the total heat release after 24 h is provided. Such data can be of particular interest to consultants aiming at the reduction of thermal cracking in massive concrete.

show abstract

“…Belite-ye'elimite-ferrite (BYF) cements are considered as green materials due to the low energy demand and low CO 2 emissions of their production process [3,4] compared to Portland cement (PC). The production of these materials is feasible [5] and the use of alternative raw materials is a step forward in sustainability [6][7][8]. However, belite-rich cements are still a challenge [9] due to their lower reactivity rate with water and the consequent lower early mechanical strengths development.…”

Section: Introductionmentioning

confidence: 99%

Effect of Boron and Water-to-Cement Ratio on the Performances of Laboratory Prepared Belite-Ye’elimite-Ferrite (BYF) Cements

et al. 2021

View full text Add to dashboard Cite

The effect of superplasticiser, borax and the water-to-cement ratio on BYF hydration and mechanical strengths has been studied. Two laboratory-scale BYF cements—st-BYF (with β-C2S and orthorhombic C4A3S¯) and borax-activated B-BYF (with α’H-C2S and pseudo-cubic C4A3S¯)—have been used, and both show similar particle size distribution. The addition of superplasticiser and externally added borax to BYF pastes has been optimised through rheological measurements. Optimised superplasticiser contents (0.3, 0.4 and 0.1 wt % for st-BYF, B-BYF and st-BYF with externally added 0.25 wt % B2O3, respectively) result in low viscosities yielding homogeneous mortars. The calorimetric study revealed that st-BYF is more reactive than B-BYF, as the values of heat released are 300–370 J/g and 190–210 J/g, respectively, after 7 days of hydration; this fact is independent of the water-to-cement ratio. These findings agree with the higher degree of hydration at 28 days of β-C2S in st-BYF (from 45 to 60%) than α’H-C2S in B-BYF (~20 to 30%). The phase assemblage evolution has been determined by LXRPD coupled with the Rietveld method and MAS-NMR. The formation of stratlingite is favoured by increasing the w/c ratio in both systems. Finally, the optimisation of fresh BYF pastes jointly with the reduction of water-to-cement ratio to 0.40 have allowed the achieving of mortars with compressive strengths over 40 MPa at 7 days in all systems. Moreover, the st-BYF mortar, where borax was externally added, achieved more than 70 MPa after 28 days. The main conclusion of this work does not support Lafarge’s approach of adding boron/borax to the raw meal of BYF cements. This procedure stabilises the alpha belite polymorph, but its reactivity, in these systems, is lower and the associated mechanical strengths poorer.

show abstract

Utilization of Several Industrial Wastes as Raw Material for Calcium Sulfoaluminate Cement

Cited by 24 publications

References 32 publications

Novel Bionic Soy Protein-Based Adhesive with Excellent Prepressing Adhesion, Flame Retardancy, and Mildew Resistance

Novel Bionic Soy Protein-Based Adhesive with Excellent Prepressing Adhesion, Flame Retardancy, and Mildew Resistance

Managing the Heat Release of Calcium Sulfoaluminate Cement by Modifying the Ye’elimite Content

Effect of Boron and Water-to-Cement Ratio on the Performances of Laboratory Prepared Belite-Ye’elimite-Ferrite (BYF) Cements

Contact Info

Product

Resources

About