EVALUATION OF COATING MATERIALS USED TO ENHANCE THE PROPERTIES OF LIGHTWEIGHT AGGREGATE

Mohammed Qasim  Yahya; Eman Kh.  Ibrahim

doi:10.30572/2018/KJE/170229

Authors

Mohammed Qasim Yahya Master student, Department of Civil Engineering, College of Engineering, University of Mosul, 41002, Mosul, Iraq
Eman Kh. Ibrahim Lecturer, Department of Civil Engineering, College of Engineering, University of Mosul, 41002, Mosul, Iraq

DOI:

https://doi.org/10.30572/2018/KJE/170229

Keywords:

Aggregate impregnation, Cement paste, Lightweight aggregate, Pumice, Unit weight, Water absorption

Abstract

Two major issues associated with the production of lightweight concrete are high-water absorption and low unit-weight. To minimize the absorption of lightweight aggregate LWA (pumice) with maintaining low unit-weight, pumice particles were treated using different coating materials. The research evaluates the effect of coating materials and technique on enhancing the properties of pumice based on absorbency and unit-weight. The research included 36 samples were prepared and coated in different materials, quantity, layers, and initial moisture content. The samples were coated with either cement paste (CP), CP containing silica fume (SF), or CP containing polymer, and applied in either one or two layers; the samples were either oven-dried or surface-saturated state. The results showed that the treatment of LWA significantly reduces the absorption of pumice. The pumice coated with CP containing SF exhibited the highest reduction in absorption by up to 65% when applied in two layers and by 57% when applied in a single layer under OD conditions. The results also presented that the smaller quantity of coating materials, the greatest effect on the pumice properties. Consequently, pumice coated with 500 gm showed the greatest reduction (9%) in absorption compared to pumice coated with 750 and 1000 gm, especially at OD conditions

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References

Aboul-Nour, L. A., Zaghlal, M. Y. & Malek, K. A. (2020), "Improving compressive strength of lightweight aggregate concrete", The Egyptian International Journal of Engineering Sciences and Technology, 30 (Civil and Architectural Engineering), 12-21, https://doi.org/10.21608/eijest.2020.104929.

Alazhari, M., Sharma, T., Heath, A., Cooper, R. & Paine, K. (2018), "Application of expanded perlite encapsulated bacteria and growth media for self-healing concrete", Construction and Building Materials, 160, 610-619, https://doi.org/10.1016/j.conbuildmat.2017.11.086.

Alsaadi, Z., Alobad, Z. K. & Akraa, M. A. (2024), "Effect of modification with polyether polyol and liquid silicon rubber on the mechanical properties of epoxy system", Kufa Journal of Engineering, 15 (3), 170-185, https://doi.org/10.30572/2018/KJE/150310.

Baloch, H., Usman, M., Rizwan, S. A. & Hanif, A. (2019), "Properties enhancement of super absorbent polymer (SAP) incorporated self-compacting cement pastes modified by nano silica (NS) addition", Construction and Building Materials, 203, 18-26, https://doi.org/10.1016/j.conbuildmat.2019.01.096.

Bideci, A., Bideci, Ö. S. & Ashour, A. (2023), "Mechanical and thermal properties of lightweight concrete produced with polyester-coated pumice aggregate", Construction and Building Materials, 394, 132204, https://doi.org/10.1016/j.conbuildmat.2023.132204.

Bideci, A., Gültekin, A. H., Yıldırım, H., Oymael, S. & Bideci, Ö. S. (2013), "Internal structure examination of lightweight concrete produced with polymer-coated pumice aggregate", Composites Part B: Engineering, 54, 439-447, https://doi.org/10.1016/j.compositesb.2013.06.004.

Bogas, J. A. & Real, S. (2019), "A review on the carbonation and chloride penetration resistance of structural lightweight aggregate concrete", Materials, 12 (20), https://doi.org/10.3390/ma12203456.

C1240-20, A. (2020), "Standard specification for silica fume used in cementitious mixtures", ASTM International, West Conshohocken, PA, USA, 04.02 (ICS Code: 91.100.10), 1-7, https://doi.org/10.1520/C1240-20.

C127-24, A. (2024), "Standard test method for relative density (specific gravity) and absorption of coarse aggregate", ASTM West Conshohocken, PA, 04.02 (ICS Code: 91.100.30), 1-6, https://doi.org/10.1520/C0127-24.

C29/C29m-23, A. (2023), "Standard test method for bulk density (“unit weight”) and voids in aggregate", ASTM, 04.02 (ICS Code: 19.060), 1-5, https://doi.org/10.1520/C0029_C0029M-23.

Dixit, A. & Pang, S. D. (2022), "Optimizing lightweight expanded clay aggregate coating for enhanced strength and chloride resistance", Construction and Building Materials, 321, 126380, https://doi.org/10.1016/j.conbuildmat.2022.126380.

Domagała, L. & Bryła, E. (2021), "The properties of lightweight aggregates pre-coated with cement pastes and their suitability for concrete", Materials, 14 (21), https://doi.org/10.3390/ma14216417.

Domagała, L. & Podolska, A. (2022), "Effect of lightweight aggregate impregnation on selected concrete properties", Materials, 15 (1), https://doi.org/10.3390/ma15010198.

Domagała, L. (2020), "Durability of structural lightweight concrete with sintered fly ash aggregate", Materials, 13 (20), https://doi.org/10.3390/ma13204565.

Drouna, K., Ali Boucetta, T., Maherzi, W. & Ayat, A. (2025), "Enhancing the properties of expanded clay aggregates through cementitious coatings based on waste glass powder and granulated slag: Impact on lightweight self-compacting concrete performance", Construction and Building Materials, 485, 141896, https://doi.org/10.1016/j.conbuildmat.2025.141896.

Felekoğlu, B. (2012), "A method for improving the early strength of pumice concrete blocks by using alkyl alkoxy silane (AAS)", Construction and Building Materials, 28 (1), 305-310, https://doi.org/10.1016/j.conbuildmat.2011.07.026.

Fernández-Fanjul, A., Tenza-Abril, A. J. & Baeza-Brotons, F. (2018), "A new methodology for determining water absorption of lightweight, normal-weight and heavyweight aggregates in a viscous medium", Construction and Building Materials, 165, 596-607, https://doi.org/10.1016/j.conbuildmat.2018.01.025.

Franus, M., Barnat-Hunek, D. & Wdowin, M. (2015), "Utilization of sewage sludge in the manufacture of lightweight aggregate", Environmental Monitoring and Assessment, 188 (1), 10, https://doi.org/10.1007/s10661-015-5010-8.

González-Corrochano, B., Alonso-Azcárate, J., Rodas, M., Barrenechea, J. F. & Luque, F. J. (2011), "Microstructure and mineralogy of lightweight aggregates manufactured from mining and industrial wastes", Construction and Building Materials, 25 (8), 3591-3602, https://doi.org/10.1016/j.conbuildmat.2011.03.053.

Hanif, S., Tahir, M. A., Rashid, K., Ul Rehman, M., Saleem, N., Aslam, A. & Naeem, G. (2023), "Physico-mechanical performance of lightweight geopolymer foam aggregates developed by geopolymerization through microwave-oven irradiations", Journal of King Saud University - Engineering Sciences, 35 (5), 311-318, https://doi.org/10.1016/j.jksues.2021.04.002.

Hasan, F. & Ahmed, T. M. (2025), "Enhancing cold mix asphalt performance with geopolymer technology", Kufa Journal of Engineering, 16 (1), 283-297, https://doi.org/10.30572/2018/KJE/160117.

Ismail, S. & Ramli, M. (2014), "Mechanical strength and drying shrinkage properties of concrete containing treated coarse recycled concrete aggregates", Construction and Building Materials, 68, 726-739, https://doi.org/10.1016/j.conbuildmat.2014.06.058.

Jiang, C., Wang, A., Bao, X., Ni, T. & Ling, J. (2020), "A review on geopolymer in potential coating application: Materials, preparation and basic properties", Journal of Building Engineering, 32, 101734, https://doi.org/10.1016/j.jobe.2020.101734.

Kareem, A. I., Nikraz, H. & Asadi, H. (2019), "Performance of hot-mix asphalt produced with double coated recycled concrete aggregates", Construction and Building Materials, 205, 425-433, https://doi.org/10.1016/j.conbuildmat.2019.02.023.

Li, J., Xiao, H. & Zhou, Y. (2009), "Influence of coating recycled aggregate surface with pozzolanic powder on properties of recycled aggregate concrete", Construction and Building Materials, 23 (3), 1287-1291, https://doi.org/10.1016/j.conbuildmat.2008.07.019.

Ling, C., Moraes, R., Swiertz, D. & Bahia, H. (2013), "Measuring the influence of aggregate coating on the workability and moisture susceptibility of cold-mix asphalt", Transportation Research Record Journal of the Transportation Research Board, 3, pp. 46-52, https://doi.org/10.3141/2372-06.

Lotfy, A., Hossain, K. M. A. & Lachemi, M. (2016), "Durability properties of lightweight self-consolidating concrete developed with three types of aggregates", Construction and Building Materials, 106, 43-54, https://doi.org/10.1016/j.conbuildmat.2015.12.118.

Mahanna, H., Alaa, A., Salah, H. & Tahwia, A. M. (2024), "Recycling water treatment sludge into a novel eco-friendly core–shell lightweight aggregate and its application", Clean Technologies and Environmental Policy, 26 (8), 2557-2572, https://doi.org/10.1007/s10098-024-02747-9.

Pasupathy, K., Ramakrishnan, S. & Sanjayan, J. (2020), "Enhancing the mechanical and thermal properties of aerated geopolymer concrete using porous lightweight aggregates", Construction and Building Materials, 264, 120713, https://doi.org/10.1016/j.conbuildmat.2020.120713.

Salli Bideci, Ö., Bideci, A., Gültekin, A. H., Oymael, S. & Yildirim, H. (2014), "Polymer coated pumice aggregates and their properties", Composites Part B: Engineering, 67, 239-243, https://doi.org/10.1016/j.compositesb.2013.10.009.

Sasanipour, H. & Aslani, F. (2020), "Durability assessment of concrete containing surface pretreated coarse recycled concrete aggregates", Construction and Building Materials, 264, 120203, https://doi.org/10.1016/j.conbuildmat.2020.120203.

Shahedan, N., Abdullah, M. M. a. B., A Aziz, I., Razak, R., Subaer, S., Umniati, B. S., Yaakob, M. & Rusli, N. (2022), "Potential of geopolymer coating for lightweight aggregate via milling and dipping method: A review", European Journal of Materials Science and Engineering, 7, 94-105, https://doi.org/10.36868/ejmse.2022.07.02.094.

Siddiqi, M. A., Rizvi, M. U., Ahmed, J., Khan, M. K. & Tasleem (2023), "Effect of silica fume on the fresh and hardened concrete a review", International Journal of Creative Research Thoughts, 11 (6), https://ijcrt.org/papers/IJCRT2306720.pdf.

Tang, P. & Brouwers, H. J. H. (2018), "The durability and environmental properties of self-compacting concrete incorporating cold bonded lightweight aggregates produced from combined industrial solid wastes", Construction and Building Materials, 167, 271-285, https://doi.org/10.1016/j.conbuildmat.2018.02.035.

Tarekegn, Y. G., Lahmer, T., Tarekegn, A. G. & Ftwi, E. G. (2025), "Effects of coating thickness and aggregate size on the damping properties of concrete: A numerical simulation approach", Coatings, 15 (5), https://doi.org/10.3390/coatings15050610.

Tuncer, M., Bideci, A., Bideci, Ö., Çomak, B. & Durmuş, G. (2025a), "Engineering properties and thermal conductivity of lightweight concrete with polyester-coated pumice aggregates", Science and Engineering of Composite Materials, 32, https://doi.org/10.1515/secm-2025-0057.

Tuncer, M., Bideci, A., Çomak, B., Durmuş, G. & Sallı Bideci, Ö. (2025b), "Experimental Investigation of Durability Properties of Polymer Coated Pumice Aggregate Lightweight Concretes", Polymers, 17 (2), https://doi.org/10.3390/polym17020253.

Ul Rehman, M., Rashid, K., Ul Haq, E., Hussain, M. & Shehzad, N. (2020), "Physico-mechanical performance and durability of artificial lightweight aggregates synthesized by cementing and geopolymerization", Construction and Building Materials, 232, 117290, https://doi.org/10.1016/j.conbuildmat.2019.117290.

Vahabi, M. Y., Tahmouresi, B., Mosavi, H. & Fakhretaha Aval, S. (2022), "Effect of pre-coating lightweight aggregates on the self-compacting concrete", Structural Concrete, 23 (4), 2120-2131, https://doi.org/10.1002/suco.202000744.

Wang, X. F., Yang, Z. H., Fang, C., Wang, W., Liu, J. & Xing, F. (2020), "Effect of carbonate-containing self-healing system on properties of a cementitious composite: Fresh, mechanical, and durability properties", Construction and Building Materials, 235, 117442, https://doi.org/10.1016/j.conbuildmat.2019.117442.

Yew, M. K., Yew, M. C., Beh, J. H., Lee, F. W., Lim, S. K., Lee, Y. L., Lim, J. H. & Kabeer, K. I. S. A. (2023), "Effect of pre-soaking treatment method of plant-based aggregate on the properties of lightweight concrete—preliminary study", Coatings, 13 (5), https://doi.org/10.3390/coatings13050864.

Yuan, J., Zhang, Y., Huang, H., Zhou, G., Fu, C., Duan, W., Jiang, W., Xiong, L., Li, H., Yang, X. & Li, C. (2024), "Influence of construction process on aggregate spalling behavior on ultrathin waterborne epoxy resin layer", Coatings, 14 (11), https://doi.org/10.3390/coatings14111468.

Yuan, Q., Liu, Z., Zheng, K. & Ma, C. (2021), "Inorganic cementing materials", Civil Engineering Materials, 2, 17-57, https://doi.org/10.1016/B978-0-12-822865-4.00002-7.