Nagapan, Moganraj and Yap, Soon Poh and Lau, Beng Fye and Mo, Kim Hung and Loganathan, Loginy (2025) Enhancing the performance of spent mushroom substrate cement bricks: A comparative analysis of pretreatment methods and additive effects. Construction and Building Materials, 469. p. 140437. ISSN 0950-0618, DOI https://doi.org/10.1016/j.conbuildmat.2025.140437.
Full text not available from this repository.Abstract
The rapid growth of the mushroom industry has led to the substantial production of spent mushroom substrate (SMS), a by-product rich in organic content but challenging to dispose of due to environmental concerns. Previous studies have shown that recycling SMS in construction materials provides a sustainable solution while reducing the need for natural resources like sand. Although SMS enhances cement-based structures' lightweight and thermal insulation properties, it negatively affects mechanical and durability due to its high-water absorption and organic inhibitors that interfere with cement hydration. Therefore, this study aims to assess effective methods for enhancing the performance of SMS-cement bricks through various pretreatment techniques (water-conditioned, hot water, NaOH, cement coating, and silica fume coating) and additives (5 % calcium chloride (CaCl2)), 10% silica fume, and 1.5% superplasticizer). Results show that cement coating significantly increased compressive strength and modulus of rupture (MOR) by 260.1 % and 520.0%, respectively. NaOH treatment also improved mechanical strength. Furthermore, adding 5 % CaCl2 boosted compressive strength by 340.9% and MOR by 628.0%. The combination of cement coating and CaCl2 resulted in the highest strength (45.6 MPa), with reduced water absorption and porosity, making it suitable for load-bearing structures. These findings demonstrate that SMS pretreatment and additives can significantly improve the performance of SMScement bricks, encouraging the use of SMS in sustainable construction practices.
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Agricultural wastes; Pretreatments; Additives; Cement brick; Mechanical property; Durability property |
| Subjects: | Q Science > QH Natural history T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering > Department of Civil Engineering Faculty of Science > Institute of Biological Sciences |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 30 Apr 2025 08:05 |
| Last Modified: | 30 Apr 2025 08:05 |
| URI: | http://eprints.um.edu.my/id/eprint/47864 |
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