Performance of Using Waste Marble Dust for the Improvement of Loose Sand in Deep Soil Mixing

Abstract

The use of waste materials in soil stabilization is very important in terms of recycling of waste materials and reducing environmental pollution. The aim of this study is to investigate the effective use of waste marble dust, WMD in deep soil mixing, which is one of the ground improvement techniques used for problematic soils. In this study, loose sand was mixed with cement and different proportions of WMD. First, soil-binder mixtures were formed by using cement as a binder material and then cement was replaced by different percentages of WMD. Series of tests were performed to evaluate the effect of WMD on the mechanical properties of the mixtures, such as unconfined compressive strength, stress-strain behavior, toughness, modulus of elasticity and resilient modulus. Ultrasonic pulse velocity (UPV) test was also carried out on the specimens. The specimens were also examined under a microscope to investigate the pore spaces and surface bonds. In addition, setting time and bulk density of the specimens were studied. The optimum replacement percentage of WMD was found to be (10) at a binder-soil ratio of (20). Reuse of WMD in deep soil mixing is promising and will provide significant cost saving and environmental protection.

Improving the Properties of Saline Soil Using a Deep Soil Mixing Technique

“…Generally, the trend of UCS due to cement replacement is consistent with the outcomes reported by Alnunu and Nalbantoglu [13] for replacement of cement with waste marble powder. With 0% to 30% MP contents in the binder, UCS increases because of the formation of calcium hydroxide (Ca(OH) 2 ) from the calcium oxide (CaO) in cement and marble powder, dissolution and precipitation of silica (SiO 2 ) and alumina (AlO 3 ) from the soil, and the consequent reactions forming CAH (calcium aluminate hydrate) and CSH (calcium silicate hydrates).…”

“…Jung et al [9] presented the first and the only study which employed a wet DSM technique for saline soil in the UAE to reduce settlement and improve the bearing capacity of a shallow foundation as an alternative to traditional piling. The employed binder in DSM is typically cement; however, it may also occasionally be fly ash, geopolymers, microsilica, or glass powder [9][10][11][12][13][14]. The environmental impact of geotechnical engineering applications, such as grouting and soil stabilization using cement, is very harmful due to high CO 2 emissions [15].…”

“…Thus, the methodology of laboratory samples preparation plays a significant role in the strength of the treated soil. Many studies on DSM techniques reported a traditional mechanical mixing of the soil, binder and water that are not consistent with the field methods where the soil and binder mixtures are poured into molding cylinders [11][12][13]. Very few studies, such as Esmaeili et al [10] and Frikha et al [23], presented a scaledlaboratory apparatus similar to the field deep soil mixing techniques where a vertical and rotating auger mixed the binder and the soil.…”

Utilization of waste marble dust as cement and sand replacement in concrete

“…5b. At 15% replacement, the marble dust did not provide the optimal particle packing density, leading to a higher void ratio and, consequently, a decrease in compressive strength [25] as shown in Fig. 5b.…”

Synthesis and characterization of PCC from marble waste for its application in papermaking

“…The need of huge new lands for dumping of MARWAS slurry is also an unavoidable recurring problem. Utilization of this waste for the manufacture of a few construction materials consumes only a very small fraction of the total waste generated (Sivrikaya et al 2020;Alnunu and Nalbantoglu 2022;Belkadi et al 2022). Some additional ways of its recycling may be thought of based on the utilization of its Ca-content as a substitute of limestone (Kumar et al 2020(Kumar et al , 2022Dhakad et al 2023).…”