— Concrete slurry waste (CSW) is one of the possible types of waste generated in ready-mix and precast concrete plants. CSW is a product of the aggregate reclaiming system where unused concrete and truck washing water are treated in order to reclaim and recycle the aggregates – CSW is the residue of this separation [1].The …

 — Moreover, the disposal of waste concrete from a batching plant has high environmental impact [6,7]. The main sources of concrete sludge waste in concrete batching plants (CBPs) are unloaded-concrete that returns to batching plants [4,8] and ballast that is still adhered to cement mixer truck walls after unloading blended cement …

 — Disposal of water treatment sludge (WTS) has become an important issue of global environmental concern due to problems and costs. This study explored the feasibility of cold-bond methodology to produce an eco-friendly core–shell lightweight aggregate (LWA) from WTS, expanded perlite (EP), and cement. The effect of cement and WTS …

 — Wastewater sludge is an inevitable by-product of wastewater treatment plants (WWTP), occurring in solid, semisolid, or slurry forms, which are disposed of into the ambient environment after treatment [].The wastewater sludge consists primarily of water (80%), inorganics and organics, microorganisms, biological macromolecules, heavy …

 — The concrete slurry water used in experiments was separated into supernatant water and concrete slurry waste to obtain equal sludge solids content. The concrete slurry waste was dried at 105 °C until it reached a constant weight. Then, the dried concrete slurry waste was pulverized to control the particle size to 75 µm or below using …

 — 2.1 Concrete. The use of textile sludge as a fine aggregate replacement impacts the workability and density of the concrete. The compressive strength of M20 grade concrete, which contains 32% of textile sludge and 22% of fly ash, is 20.22 N/mm 2 and may be used in construction (Kulkarni et al. 2012).Fly ash bricks are made in Phase-I …

Bench-Scale Operation of a Concrete Sludge Recycling Plant. Akihiro Yamasaki. 2012, Industrial & Engineering Chemistry Research. See Full PDF Download PDF. See Full PDF Download PDF. Related Papers.

A bench-scale plant for waste concrete sludge recycling was designed, constructed, and operated. Real concrete sludge generated from a pile and pole production plant and …

 — CSW is recognized as a potential source of calcium carbonate. Upon introducing CO 2 into the aqueous phase, up to 30% of calcium can be extracted from CSW, yielding CaCO 3 with a purity exceeding 97% (Iizuka et al. 2012).However, CO 2 ′s low water solubility constrains CaCO 3 production (Hui et al. 2022).The adjustment of …

 — Disposal of fresh concrete waste is a worldwide problem. In recent years, many studies have claimed that fresh concrete waste from a reclaiming system can be efficiently recycled into concrete. ... Recycling fresh concrete waste: A review. Ruixuan Wang, Ruixuan Wang. School of Engineering and Information Technology, University of …

 — A pilot-scale plant to treat concrete sludge and produce calcium carbonate (CaCO 3) and an environmental purification agent (phosphorus adsorbent derived from …

This chapter introduces the potential recycling of sewage sludge in landfill cover application. The subtopic includes the generation and properties of sewage sludge as well as the current practices on sludge handling, treatment, and management. ... 110], concrete mix [111,112,113], and clay bricks . ... Figure 6.42a–h shows the heavy metal ...

 — Integrated steel plants utilize mostly five materials such as raw materials, air, water, fuel and power to produce steel. During the production of steel, 2–4 t of wastes are being generated per tonne of steel produced.The various solid wastes in the form of slags and sludges that are emerged from steel plants are blast furnace slag, blast furnace flue …

 — Sludge water from ready-mixed concrete plants as well as dry sludge, which is derived from the settling of the water, are hazardous for disposal due to their high pH value (pH>11.5).

 — The annual production of PS from Italian automotive plants (3000 t/year) could be accommodated in a paved area of 1.64 km2 that, when employed in local roads, with an average width of 5 m ...

 — Waste-concrete recycling processes using wet-based crushing methods inevitably generate a large amount of alkaline concrete sludge, as well as wastewater, which contains abundant Ca ions. The Ca-rich alkaline wastewater must then be neutralized for reuse in the waste-concrete recycling process. In this study, the feasibility of a …

Reuse of By-Products from Ready-Mixed Concrete Plants for the Production of Cement Mortars. This study was motivated by the necessity to recycle sludge water resulting …

 — Besides the increasing disposal cost, sludge water, a wastewater washout from ready-mixed concrete plant, has caused environmental impact problems. This paper investigates the utilization and recycling of sludge water as mixing water for concrete production. The basic properties of sludge water were obtained according to ASTM …

 — Evidently, it is possible to include larger quantities of wash water in new concrete mixes by adjusting the amount of sand depending on water density (Audo et al., 2016, 2018). stated that dry sludge received from ready-mixed concrete plants contained high quantities of cement and low quantities of sand.

A bench-scale plant for waste concrete sludge recycling was designed, constructed, and operated. Real concrete sludge generated from a pile and pole production plant and groundwater were used for the experiments.

 — Concrete slurry waste (CSW) is a mixture of fine aggregates, cement hydration products and residual cement particles obtained from the sedimentation pits during the production of concrete. In the present study, CSW with different grinding durations were evaluated; the properties of the CSW and the CSW-cement composition …

 — Besides the increasing disposal cost, sludge water, a wastewater washout from ready-mixed concrete plant, has caused environmental impact problems. This paper investigates the utilization and recycling of sludge water as mixing water for concrete production. The basic properties of sludge water were obtained according to ASTM …

 — This paper gives a comprehensive review of the characteristics and applicability of fresh concrete waste in phase of slurry wastewater, fresh paste, and …

 — Bench-scale operation of a concrete sludge recycling plant. Ind. Eng. Chem. Res., 51 (2012), pp. 6099-6104. Crossref View in Scopus Google Scholar [6] ... Effect of sludge water from ready-mixed concrete plant on properties and durability of concrete. Cem. Concr. Compos., 28 (2006), pp. 441-450. View PDF View article View in Scopus …

 — Globally, a huge quantity of alum sludge waste is produced as a by-product material from drinking water treatment plants that utilize aluminum salts as an essential coagulate and is the most ...

 — The potential use of equipment for fresh concrete recycling, which allows the recovery of aggregates and water, could be attractive because previous studies have demonstrated that there are economic benefits in addition to environmental benefits. ... (2016) that had applied sludge from ready-mixed concrete plants as a substitute for …

 — Typical sources of concrete sludge are ready-mixed concrete plants and concrete product manufacturing plants. Concrete sludge waste management is difficult and costly because it is strongly alkaline and readily solidified. ... Honma M, Hayakawa Y, Yanagisawa Y (2012a) Bench-scale operation of a concrete sludge recycling plant. Ind …

This paper presents the results of research dealing with the use of recycled waste sludge water from a concrete plant (CP) as partial or complete replacement of mixing water in cement mixtures. The need to recycle waste sludge water generated as a by-product (waste sludge water) during the production of fresh concrete in the concrete plant results from …

 — In this study, high concentration wastewater from ready-mixed concrete plants was used to replace potable water as mixing water of concrete, with replacement rates of 0%, 25%, 50%, 75%, and ...

DOI: 10.1016/J.CONBUILDMAT.2016.02.044 Corpus ID: 138100079; Utilization of sludge from ready-mixed concrete plants as a substitute for limestone fillers @article{Audo2016UtilizationOS, title={Utilization of sludge from ready-mixed concrete plants as a substitute for limestone fillers}, author={Mariane Audo and P-Y. Mahieux and …