Mechanical Properties of Cement Slurry by Partially Substitution of Industry Waste Natural Pozzolans
There have been many reports of the destructive effects of cement on the environment in recent years. In the present research, it has been attempted to reduce the destructive effects of cement by replacing silica fume as adhesive materials instead of cement. The present study has attempted to improve the mechanical properties of cement slurry by using waste material from a glass production factory, located in Qazvin city of Iran, in which accumulation volume has become an environmental threat. The chemical analysis of the waste material indicates that this material contains about 94% of SiO2 and AL2O3 and has a close structure to silica fume. Also, the particle grain size test was performed on the mentioned waste. Then, the unconfined compressive strength test of the slurry was performed by preparing a mixture of water and adhesives with different percentages of cement and silica fume. The water to an adhesive ratio of this mixture is 1:3, and the curing process last 28 days. It was found that the sample had an unconfined compressive strength of about 300 kg/cm2 in a mixture with equal proportions of cement and silica fume. Besides, the sample had a brittle fracture in the slurry sample made of pure cement, however, the fracture in cement-silica fume slurry mixture is flexible and the structure of the specimen remains coherent after fracture. Therefore, considering the flexibility that is achieved by replacing this waste, it can be used to stabilize soils with cracking potential.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.3669172Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 470
 E. Kalkan, Effects of silica fume on the geotechnical properties of fine-grained soils exposed to freeze and thaw. Cold Regions Science and Technology 58 (2009) 130 – 135
 E. Kalkan, Influence of silica fume on the desiccation cracks of compacted clayey soils. Applied Clay Science 43 (2009) 296 – 302
 E. Kalkan, Impact of wetting-drying cycles on swelling behavior of clayey soils modified by silica fume. Applied Clay Science, 52 (2011), 345 – 352
 E. Kalkan, Preparation of scrap tire rubber fiber – silica fume mixtures for modification of clayey soils. Applied Clay Science, 80 – 81 (2013), 117 – 125
 Goodarzi et al, Assessing Geo-Mechanical and Micro-Structural Performance of Modified Expansive Clayey Soil by Silica Fume as Industrial Waste. Ijst, Transactions of Civil Engineering, Vol. 39, No. C2, pp 333 – 350
 Goodarzi et al, Enhanced stabilization of highly expansive clays by mixing cement and silica fume. Applied Clay Science, 132 – 133 (2016), 675 – 684
 S.E. Mousavi, Utilization of Silica Fume to Maximize the Filler and Pozzolanic Effects of Stabilized Soil with Cement. Springer International Publishing (2017)
 S. Ghavami et al, Effects of Silica Fume and Nano-silica on the Engineering Properties of Kaolinite Clay. AUT J. Civil Eng., 2(2) (2018) 135-142
 Ahmad and Chen, Effect of silica fume and basalt fiber on the mechanical properties and microstructure of magnesium phosphate cement (MPC) mortar. Construction and Building Materials 190 (2018) 466 – 478
 A. Saygili and M. Dayan, Freeze-thaw behavior of lime-stabilized clay reinforced with silica fume and synthetic fibers, Cold Regions Science and Technology, (2019)
 Phanikumar et al. Silica fume stabilization of an expansive clay subgrade and the effect of silica fume-stabilised soil cushion on its CBR. Geomechanics and Geoengineering.
 ASTM D4318-05, Standard Test Methods for Liquid Limit, Plastic Limit, and Plasticity Index of Soils, ASTM International, West Conshohocken, PA, 2005.
 ASTM D2487-11, Standard Practice for Classification of Soils for Engineering Purposes (Unified Soil Classification System), ASTM International, West Conshohocken, PA, 2011.
 ASTM D854-02, Standard Test Method for Specific Gravity of Soil Solids by Water Pycnometer. ASTM International, West Conshohocken, PA, 2002.