Marble Dust

The search of alternative ingredients of concrete to conserve the conventional ingredients and protect environment is an active area of research. Therefore, this research article presents laboratory investigations on compressive strength of concrete made with partial replacement of natural coarse aggregates from demolishing waste concrete and partial replacement of cement with marble dust. Recycled and conventional aggregates were used in equal dosage. Cement was replaced with marble dust from 0 to 10% in increment of 2.5%. Six concrete mixes were designed using 1:2:4 mix and 0.5 w/c ratio. Workability of each mix was evaluated by slump test. 30 standard size cylinders were prepared and cured for 28-days followed by testing for weight and compressive strength. The comparison of results with those of conventional concrete showed that 5% replacement of cement with marble dust gives 8.3% increase in compressive strength and 2% reduction in weight. Therefore, 5% replacement is concluded as the optimum dosage of the marble dust in green concrete. The outcome of the research will provide understanding of the behavior of marble dust on compressive strength of green concrete made by using demolishing waste as coarse aggregates.

The present paper deals with the effect on strength and mechanical properties of cement concrete by using Fly ash (FA), Marble dust (MD) & Stone dust (SD). Concrete has become an indispensable construction material and it is now used in greater quantities than any other material. In the present context durability, strength, economy and stainable development are key issues for development. 25% and 35% of fly ash is used as replacement of cement and 30% and 40% natural sand is replaced by MD and SD in different proportion in concrete. Properties of fresh concrete and hardened concrete are investigated. Concrete prepared by replacing 25% of cement by Fly ash and 30% of sand by  marble dust and stone dust showed good results. The 7day & 28 days compressive strength was only about 3 to 4 % lesser than the control concrete.

"Present day construction cost is at its height with using basic materials like cement, coarse aggregates and fine aggregates. Leaving waste materials to nature specifically can bring about environmental issues. Therefore, reuse of waste materials has been emphasized. Industries produce lots of waste materials, which might be helpful in partial replacement of basic materials due to their composition and it can be proved economical. The concrete industry is always searching for supplementary material with the target of decreasing the solid waste disposal issue. As we know concrete is weak in tension so, to overcome this, steel fibers has been used. There are few reuse and recycling solutions for this industrial by-product, both in experimental phase and have useful applications. These mechanical wastes are dumped in the close-by areas and natural fruitfulness of the soil is ruined. The physical, mechanical & chemical properties of wastes are discussed. In this study, marble powder has replaced sand, the whole research is carried out on M60 grade concrete with partly replacing sand by 0%, 15%, 30%, 45%, and 60% of marble dust, with the addition of steel fibers at ratio 0.8% by volume so as to get greatest compressive strength, flexural strength and furthermore split tensile strength. Based upon the feasibility interpretation it is observed that replacing up to 45% marble powder and 0.8% of steel fibers in concrete is appropriate in conformance with the requirement. The compressive strength and the spilt tensile increased up to 15% replacement, after that they started decreasing. KRISHAN KUMAR | SUMESH JAIN""Combined Effect of Marble Dust and Steel Fiber on the Mechanical Properties of High Strength Concretes"" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-4 , June 2017, URL: http://www.ijtsrd.com/papers/ijtsrd163.pdf
Article URL: http://www.ijtsrd.com/engineering/civil-engineering/163/combined-effect-of-marble-dust-and-steel-fiber-on-the-mechanical-properties-of-high-strength-concretes/krishan-kumar"

The reuse of marble waste as filler material in the use of bituminous roads to replace stone dust is presented in this
paper. Stone dust is used as a filler conventionally by NHA, Pakistan. Compared to traditional mixes containing stone dust as
filler, modified mixes containing marble dust as filler were prepared. In both types of blends, three different percentages of
fillers were used, namely marble dust and stone dust (2 percent, 4 percent and 6 percent by weight of total aggregates), along
with three varying bitumen contents (4.5 percent, 5 percent and 5.5 percent) and its performance were compared with
conventional stone dust used as filler in bituminous mixtures. In terms of Marshal Stability testing, the effect of both forms of
mixes was measured and findings were discussed. The Marshal Mix design showed that, relative to traditional mixes, modified
mixes result in higher stability. The fact that marble dust acts is due to an improvement in the stability of modified mixes as an
extensor for bitumen. Stone dust consumes more bitumen and, when the summer temperature reaches 400C and more
compaction by heavily loaded vehicles, enables the disintegration of aggregate particles by bleeding.

Namibia is a Semi-Arid Zone where the temperatures are high with an average of
300 days of sunshine annually. Most of the commonly used building insulations are
made out of conventional materials which are petrochemical based substances that
contain toxic substances which are harmful to the environment. This study aimed at
comparing thermal efficiency of residential buildings of varying designs using
material from Agricultural residues and marble dust in Namibia.
Three prototype Rigs, with varying compositions were designed and built using
standard building procedures. Rig A (TAR 1) with 150 mm thick internal and external
walls; made of standard bricks of 7 MPa, insulated with compacted mixture
containing 20% (wt.) Maize, 10 % (wt.) Millet, 30% (wt.) Rice and 40% (wt.), 30%
(wt.) Cow dung; Rig B (Tamb2) 40% (wt.) with Maize, 30% (wt.), Millet, 10% (wt.),
20% (wt.), 20%wt. Marble dust and C (TNo3) that serve has control rig. Outside and
inside temperatures of the Rigs were monitored during the warm (September 2017 -
March 2018) and cold (April to August – 2018) seasons. Temperature and humidity
sensors installed at critical positions in the interior of the building, were connected to
symmetron data logger.
Results of the three design concepts revealed that TAR 1 (Rig A) attained
maximum and minimum temperatures of 24.40C and 14.80C, and humidity of 26.4%
during winter and 29.60C and 19.30C during summer with average humidity of
21.1%. Tamb2 (Rig B) recorded maximum and minimum temperature of 31.220C and
18.70C during summer with a relative humidity of 20.3%. During winter Rig B
attained average temperature of 22.600C. Furthermore, Rig C (TN03) recorded 32.220C and 21.700C in summer and winter respectively. From the results it can be
deduced that Rig A (TAR 1) with compositions of 20% (wt.) Maize, 10 % (wt.) Millet,
30% (wt.) Rice and 40% (wt.), 30% (wt.) Cow dung; had the best performance.

The search of alternative ingredients of concrete to conserve the conventional ingredients and protect environment is an active area of research. Therefore, this research article presents laboratory investigations on compressive strength of concrete made with partial replacement of natural coarse aggregates from demolishing waste concrete and partial replacement of cement with marble dust. Recycled and conventional aggregates were used in equal dosage. Cement was replaced with marble dust from 0 to 10% in increment of 2.5%. Six concrete mixes were designed using 1:2:4 mix and 0.5 w/c ratio. Workability of each mix was evaluated by slump test. 30 standard size cylinders were prepared and cured for 28-days followed by testing for weight and compressive strength. The comparison of results with those of conventional concrete showed that 5% replacement of cement with marble dust gives 8.3% increase in compressive strength and 2% reduction in weight. Therefore, 5% replacement is concluded...

Researchers and engineers are presently focusing on efficient waste material utilization in the construction sector to reduce waste. Waste marble dust has been added to concrete to minimize pollution and landfills problems. Therefore, marble dust was utilized in concrete, and its prediction was made via an artificial intelligence approach to give an easier way to scholars for sustainable construction. Various blends of concrete having 40 mixes were made as partial substitutes for waste marble dust. The ultrasonic pulse velocity of waste marble dust concrete (WMDC) was compared to a control mix without marble dust. Additionally, this research used standalone (multiple-layer perceptron neural network) and supervised machine learning methods (Bagging, AdaBoost, and Random Forest) to predict the ultrasonic pulse velocity of waste marble dust concrete. The models’ performances were assessed using R2, RMSE, and MAE. Then, the models’ performances were validated using k-fold cross-validation. Furthermore, the effect of raw ingredients and their interactions using SHAP analysis was evaluated. The Random Forest model, with an R2 of 0.98, outperforms the MLPNN, Bagging, and AdaBoost models. Compared to all the other models (individual and ensemble), the Random Forest model with greater R2 and lower error (RMSE, MAE) has a superior performance. SHAP analysis revealed that marble dust content has a positive and direct influence on and relationship to the ultrasonic pulse velocity of concrete. Using machine learning to forecast concrete properties saves time, resources, and effort for scholars in the engineering sector. View Full-Text

Keywords:
waste; marble dust; building materials; mortar; concrete

This paper represents the results of a laboratory study undertaken to investigate the effect of marble dust powder on the index properties of black-cotton soil. The black-cotton soil features a poor supporting capacity and enormous change in volume on variations of moisture content. Such expansive soils may need to be improved to make them suitable for construction activities. The objective of study is to gauge the feasibility of commercial waste like marble dust as soil stabilization material. To investigate the effect of marble dust on index properties of black-cotton soil a series of laboratory experiments are conducted on black-cotton soil samples mixed with 0% to 10% of marble dust by weight of dry soil. The test results showed a big change in consistency limits of samples containing marble dust. The liquid limit would decrease from 67.49% to 52.01%. The plasticity index decreased from 37.16% to 10.43%. Also the differential free swell decreased from 60% to 14%, showing appreci...