ECO-FRIENDLY CEMENT MORTARS USING WASTE CLAY BRICKS AND DRINKING WATER TREATMENT SLUDGE

Saadia  Lagrani; ayoub Aziz; Abdelilah BELLIL; Khadija Felaous; Mohammed Ben Ali; Mohammed Fekhaoui

doi:10.4314/njt.v44i2.2

Authors

S. Lagrani Geomaterials and Geo-Environment Team (GeoM&E), GEOBIO Laboratory, GEOPAC Center, Scientific Institute, Mohammed V University in Rabat, Morocco
A. Aziz Geomaterials and Geo-Environment Team (GeoM&E), GEOBIO Laboratory, GEOPAC Center, Scientific Institute, Mohammed V University in Rabat, Morocco
A. Bellil Geomaterials and Geo-Environment Team (GeoM&E), GEOBIO Laboratory, GEOPAC Center, Scientific Institute, Mohammed V University in Rabat, Morocco
K. Felaous Geomaterials and Geo-Environment Team (GeoM&E), GEOBIO Laboratory, GEOPAC Center, Scientific Institute, Mohammed V University in Rabat, Morocco
M. B. Ali Laboratory of Spectroscopy, Molecular Modeling, Materials, Nanomaterials, Water and Environment, Materials for Environment Team, ENSAM, Mohammed V University in Rabat, Morocco
M. Fekhaoui Geomaterials and Geo-Environment Team (GeoM&E), GEOBIO Laboratory, GEOPAC Center, Scientific Institute, Mohammed V University in Rabat, Morocco

DOI:

https://doi.org/10.4314/njt.v44i2.2

Keywords:

Environmental Impact, Drinking water treatment sludge, Waste clay brick, Compressive strength.

Abstract

The construction sector significantly contributes to environmental degradation, particularly due to the substantial CO₂ emissions associated with cement production. At the same time, large quantities of drinking water treatment sludge (DWTS) and waste clay bricks (WCB) are generated annually, leading to major environmental and logistical challenges due to their accumulation in landfills. In response to these issues, the development of low environmental impact materials incorporating industrial waste emerges as a necessary and sustainable alternative. In this context, the present study explores the potential of using these two types of waste, DWTS and WCB, to formulate a more environmentally friendly cement mortar. Two experimental series were conducted: (i) DWTS was used as a partial replacement for cement at substitution levels of 5%, 10%, 15%, and 20% after being calcined at 800 °C for one hour. (ii) In the second series, the DWTS replacement level was fixed at 10%, while WCB was used to replace sand in 25% increments, ranging from 0% to 100%. These mortar's performances were carefully assessed using several important criteria, including bulk density, water absorption, ultrasonic pulse velocity (UPV), compressive and flexural strength. The results show that 10% DWTS substitution led to a maximum compressive strength of 39.24 MPa and a flexural strength of 6.11 MPa at 28 days, compared to 36.34 MPa and 5.22 MPa for the control mix. However, WCB contents above 50% caused a clear decline in performance, with compressive and flexural strengths dropping to 22.87 MPa and 4.47 MPa, respectively, due to its porous and low-density nature. This dual strategy provides a sustainable answer for greener construction methods by drastically lowering CO₂ emissions, conserving natural resources, and reusing construction waste. These results show that using DWTS and WCB in cement mortar production is an excellent strategy for mitigating the negative impact of these wastes and protecting the environment.

References

[1] Aziz, A., Driouich, A., Felaous, K., and Bellil, A. "Box-Behnken design based optimization and characterization of new eco-friendly building materials based on slag activated by diatomaceous earth", Construction and Building Materials, vol. 375, p. 131027, avr. 2023, doi: 10.1016/j.conbuildmat.2023.131027.

[2] Felaous, K., Aziz, A., Achab, M., Fernández-Raga, M., and Benzaouak, A. "Optimizing Alkaline Activation of Natural Volcanic Pozzolan for Eco-Friendly Materials Production: An Investigation of NaOH Molarity and Na2SiO3-to-NaOH Ratio", Sustainability, vol. 15, no 5, p. 4453, mars 2023, doi: 10.3390/su15054453.

[3] Gregg, J. S., Andres, R. J., and Marland, G. "China: Emissions pattern of the world leader in CO2 emissions from fossil fuel consumption and cement production", Geophysical Research Letters, vol. 35, no 8, p. 2007GL032887, avr. 2008, doi: 10.1029/2007GL032887.

[4] Habert, G. "Environmental impact of Portland cement production", in Eco-Efficient Concrete, Elsevier, 2013, p. 3‑25. doi: 10.1533/978085709 8993.1.3.

[5] Aziz, A., Felaous, K., Alomayri, T., and Jindal, B. B. "A state-of-the-art review of the structure and properties of laterite-based sustainable geopolymer cement", Environmental Science and Pollution Research, vol. 30, no 19, p. 54333‑54350, mars 2023, doi: 10.1007/s11356-023-26495-3.

[6] Huseien, G. F., and Shah, K. W. " Durability and life cycle evaluation of self-compacting concrete containing fly ash as GBFS replacement with alkali activation", Construction and Building Materials, vol. 235, p. 117458, févr. 2020, doi: 10.1016/j.conbuildmat.2019.117458.

[7] Abdellatief, M., Elemam, W. E., Alanazi, H., and Tahwia, A. M. "Production and optimization of sustainable cement brick incorporating clay brick wastes using response surface method", Ceramics International, vol. 49, no 6, p. 9395‑9411, mars 2023, doi: 10.1016/ j.ceramint.2022.11.144.

[8] Duan, W., Zhuge, Y., Pham, P. N., Chow, C. W. K., Keegan, A., and Liu, Y. "Utilization of Drinking Water Treatment Sludge as Cement Replacement to Mitigate Alkali–Silica Reaction in Cement Composites", Journal of Composites Science, vol. 4, no 4, p. 171, nov. 2020, doi: 10.3390/jcs404 0171.

[9] Lagrani, S., Aziz, A., Bellil, A., Felaous, K., Mohammed, A., and Fekhaoui, M. "Synthesis and Characterization of Slag-Sludge-Based Eco-Friendly Materials – Industrial Implications", Journal of Ecological Engineering, vol. 24, no 1, p. 227‑238, janv. 2023, doi: 10.12911/2299 8993/156078.

[10] Owaid, H. M., Hamid, R., and Taha, M. R. "Influence of thermally activated alum sludge ash on the engineering properties of multiple-blended binders concretes", Construction and Building Materials, vol. 61, p. 216‑229, juin 2014, doi: 10.1016/j.conbuildmat.2014.03.014.

[11] Ukwizagira, G., Nezerwa, B., and Bush, H. U. G. "Effect of Crushed Clay Brick as Partial Replacement of Fine Aggregate in Concrete", Mediterranean Journal of Basic and Applied Sciences, vol. 07, no 01, p. 90‑99, 2023, doi: 10.46382/MJBAS.2023.7108.

[12] Bohórquez González, K., Pacheco, E., Guzmán, A., Avila Pereira, Y., Cano Cuadro, H., and Valencia, J. A. F. "Use of sludge ash from drinking water treatment plant in hydraulic mortars", Materials Today Communications, vol. 23, p. 100930, juin 2020, doi: 10.1016/ j.mtcomm.2020.100930.

[13] Owaid, H. M., Hamid, R., and Taha, M. R. "Durability properties of multiple-blended binder concretes incorporating thermally activated alum sludge ash", Construction and Building Materials, vol. 200, p. 591‑603, mars 2019, doi: 10.1016/j.conbuildmat.2018.12.149.

[14] Klak, F. S., Saleh, H., and Tais, A. S. "Recycling of crushed clay bricks as fine aggregate in concrete and cement mortar", Australian Journal of Structural Engineering, vol. 24, no 1, p. 67‑76, janv. 2023, doi: 10.1080/13287982. 2022.2098600.

[15] Huang, Q., Zhu, X., Xiong, G., Wang, C., Liu, D., and Zhao, L. "Recycling of crushed waste clay brick as aggregates in cement mortars: An approach from macro- and micro-scale investigation", Construction and Building Materials, vol. 274, p. 122068, mars 2021, doi: 10.1016/j.conbuildmat.2020.122068.

[16] Yang, J., Du, Q., and Bao, Y. "Concrete with recycled concrete aggregate and crushed clay bricks", Construction and Building Materials, vol. 25, no 4, p. 1935‑1945, avr. 2011, doi: 10.1016/j.conbuildmat.2010.11.063.

[17] Cachim, P. B. "Mechanical properties of brick aggregate concrete", Construction and Building Materials, vol. 23, no 3, p. 1292‑1297, mars 2009, doi: 10.1016/j.conbuildmat.2008.07.023.

[18] Adamson, M., Razmjoo, A., and Poursaee, A. "Durability of concrete incorporating crushed brick as coarse aggregate", Construction and Building Materials, vol. 94, p. 426‑432, sept. 2015, doi: 10.1016/j.conbuildmat.2015.07.056.

[19] Debieb, F., and Kenai, S. "The use of coarse and fine crushed bricks as aggregate in concrete", Construction and Building Materials, vol. 22, no 5, p. 886‑893, mai 2008, doi: 10.1016/ j.conbuildmat.2006.12.013.

[20] Corinaldesi, V. "Environmentally-friendly bedding mortars for repair of historical buildings", Construction and Building Materials, vol. 35, p. 778‑784, oct. 2012, doi: 10.1016/j.conbuildmat.2012.04.131.

[21] Ge, Z., Feng, Y., Zhang, H., Xiao, J., Sun, R., and Liu, X. "Use of recycled fine clay brick aggregate as internal curing agent for low water to cement ratio mortar", Construction and Building Materials, vol. 264, p. 120280, déc. 2020, doi: 10.1016/j.conbuildmat.2020.120280.

[22] Moroccan Standard NM 10.1.004, "Liants hydrauliques, Ciments et les constituants des ciments", 2018.

[23] Moroccan Standard NM 10.1.149, "Mesures des masses spécifiques, Coefficient d’absorption et Teneur en eau des sables", 1995.

[24] Moroccan Standard NM 10.1.150, "Mesure du coefficient de friabilité des sables", 1995.

[25] ASTM C642, "Standard test method for density, absorption, and voids in hardened concrete", ASTM, ASTM International, 2013.

[26] ASTM C109, "Standard test method for compressive strength of hydraulic cement mortars (using 2-in. or [50-mm] cube specimens)", 2002.

[27] Dang, J., Zhao, J., Hu, W., Du, Z., and Gao, D. "Properties of mortar with waste clay bricks as fine aggregate", Construction and Building Materials, vol. 166, p. 898‑907, mars 2018, doi: 10.1016/j.conbuildmat.2018.01.109.

[28] Nasr, M. S., Shubbar, A. A., Abed, Z. A.-A. R., and Ibrahim, M. S. "Properties of eco-friendly cement mortar contained recycled materials from different sources", Journal of Building Engineering, vol. 31, p. 101444, sept. 2020, doi: 10.1016/j.jobe.2020.101444.

[29] Wu, H., Xiao, J., Liang, C., and Ma, Z. "Properties of Cementitious Materials with Recycled Aggregate and Powder Both from Clay Brick Waste", Buildings, vol. 11, no 3, p. 119, mars 2021, doi: 10.3390/buildings110301 19.

[30] Bellil, A., Aziz, A., El Amrani El Hassani, I.-I., Achab, M., El Haddar, A., and Benzaouak, A. "Producing of Lightweight Concrete from Two Varieties of Natural Pozzolan from the Middle Atlas (Morocco): Economic, Ecological, and Social Implications", Silicon, vol. 14, no 8, p. 4237‑4248, juin 2022, doi: 10.1007/s12633-021-01155-8.

[31] Liu, Y., Zhuge, Y., Chow, C. W., Keegan, A., Pham, P. N., Li, D., Oh, J., Siddique, R. "The potential use of drinking water sludge ash as supplementary cementitious material in the manufacture of concrete blocks", Resources, Conservation and Recycling, vol. 168, p. 105291, mai 2021, doi: 10.1016/j.rescon rec.2020.105291.

[32] Lafhaj, Z., Goueygou, M., Djerbi, A., and Kaczmarek, M. "Correlation between porosity, permeability and ultrasonic parameters of mortar with variable water / cement ratio and water content", Cement and Concrete Research, vol. 36, no 4, p. 625‑633, avr. 2006, doi: 10.1016/j.cemconres.2005.11.009.

[33] Shafigh, P., Nomeli, M. A., Alengaram, U. J., Mahmud, H. B., and Jumaat, M. Z. "Engineering properties of lightweight aggregate concrete containing limestone powder and high volume fly ash", Journal of Cleaner Production, vol. 135, p. 148‑157, nov. 2016, doi: 10.1016/j.jcle pro.2016.06.082.

[34] Saha, A. K., Majhi, S., Sarker, P. K., Mukherjee, A., Siddika, A., Aslani, F., & Zhuge, Y. "Non-destructive prediction of strength of concrete made by lightweight recycled aggregates and nickel slag", Journal of Building Engineering, vol. 33, p. 101614, janv. 2021, doi: 10.1016/ j.jobe.2020.101614.

[35] Del Rı́o, L. M., Jiménez, A., López, F., Rosa, F. J., Rufo, M. M., and Paniagua, J. M. "Characterization and hardening of concrete with ultrasonic testing", Ultrasonics, vol. 42, no 1‑9, p. 527‑530, avr. 2004, doi: 10.1016/j.ultras. 2004.01.053.

[36] Omer, S. A., Demirboga, R., and Khushefati, W. H. "Relationship between compressive strength and UPV of GGBFS based geopolymer mortars exposed to elevated temperatures", Construction and Building Materials, vol. 94, p. 189‑195, sept. 2015, doi: 10.1016/j.conbuildmat.2015.07. 006.