Effect of Internal Curing by Super Absorbent Polymer on the Autogenous Shrinkage of Alkali-Activated Slag Mortars
Abstract
:1. Introduction
2. Materials and Methods
2.1. Raw Materials
2.2. Mix Proportions
2.3. Test Methods
2.3.1. Setting Time
2.3.2. Autogenous Shrinkage Test
- L(t) = the length of the specimen at time t, mm
- = the time of final setting, when the first length measurement is performed, min.
2.3.3. SEM and MIP
2.3.4. Compressive Strength Test
3. Results and Discussion
3.1. Setting Time
3.2. Autogenous Shrinkage
3.3. Microstructure Analysis
3.4. Compressive Strength
3.5. Feasibility of Application in Practical Projects
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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CaO | SiO2 | Al2O3 | MgO | Fe2O3 | TiO2 | K2O |
---|---|---|---|---|---|---|
43.7 | 26.5 | 18.2 | 4.9 | 1.0 | 1.0 | 0.8 |
Sample | GBFS | Sand | SAP | Activator | Additional Activator |
---|---|---|---|---|---|
S0 | 367 | 450 | 0 | 183 | 0 |
S5 | 367 | 450 | 0.184 | 183 | 11.04 |
S10 | 367 | 450 | 0.368 | 183 | 22.08 |
S20 | 367 | 450 | 0.736 | 183 | 44.16 |
S30 | 367 | 450 | 1.104 | 183 | 66.24 |
S40 | 367 | 450 | 1.472 | 183 | 88.32 |
S50 | 367 | 450 | 1.840 | 183 | 110.40 |
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Wang, P.; Chen, H.; Chen, P.; Pan, J.; Xu, Y.; Wang, H.; Shen, W.; Cao, K. Effect of Internal Curing by Super Absorbent Polymer on the Autogenous Shrinkage of Alkali-Activated Slag Mortars. Materials 2020, 13, 4318. https://doi.org/10.3390/ma13194318
Wang P, Chen H, Chen P, Pan J, Xu Y, Wang H, Shen W, Cao K. Effect of Internal Curing by Super Absorbent Polymer on the Autogenous Shrinkage of Alkali-Activated Slag Mortars. Materials. 2020; 13(19):4318. https://doi.org/10.3390/ma13194318
Chicago/Turabian StyleWang, Pengju, Haiming Chen, Peiyuan Chen, Jin Pan, Yangchen Xu, Hao Wang, Wenfeng Shen, and Ke Cao. 2020. "Effect of Internal Curing by Super Absorbent Polymer on the Autogenous Shrinkage of Alkali-Activated Slag Mortars" Materials 13, no. 19: 4318. https://doi.org/10.3390/ma13194318