A comparative study on concrete slurry waste: performance …
— 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 …
High-Performance Phosphorus Adsorbent Based on Concrete Sludge …
— 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 …
Innovative reuse of concrete slurry waste from ready-mixed …
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 …
Evaluation of concrete recycling system efficiency for …
— 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 …
Utilization of sludge from ready-mixed concrete plants as …
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 …
Aqueous Mineral Carbonation Process via Concrete Sludge
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 … Expand. 53. Save. Pilot-Scale Operation of a Concrete Sludge Recycling Plant and Simultaneous Production of Calcium Carbonate.
Innovative reuse of concrete slurry waste from ready-mixed …
— Concrete slurry waste (CSW) is generated from ready-mixed concrete plants during concrete production and is classified as a corrosive hazardous material. If it is …
Characterization and constructive utilization of sludge …
— Recycling and reuse of this sludge, especially, as fine sand in preparing mortar, concrete mix and other civil engineering products would pave the way for constructive utilization with safe and ...
Regeneration of paint sludge and reuse in cement concrete
— 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 ...
Reuse of Waste Material "Waste Sludge Water" from a Concrete Plant …
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 …
Effect of sludge water from ready-mixed concrete plant on …
— 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 …
Recycling of fresh concrete slurry waste as supplementary …
— Concrete slurry waste (CSW) is generated in ready-mix and precast concrete plants after the reclaiming of aggregates from unused concrete. CSW contains …
Treating and Recycling Concrete Process Water
— For easier maintenance and sludge removal, some plants utilize a sloped pit for initial settlement, which allows for easy access with a front-end loader. ... discharging a high annual volume of waste in addition to the costs associated with the handling and safe disposal of concrete sludge and slurry from the settlement tanks. Recycling ...
(PDF) RECYCLING READY MIX CONCRETE BATCH PLANT …
— 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).
Treating and Recycling Concrete Process Water
— Some plants will divert all wash water, coring water and even stormwater into one system, while others may use a number of smaller systems throughout their …
Recycling of fresh concrete slurry waste as supplementary …
— 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 …
Sewage Sludge Recycling and Disposal | SpringerLink
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 ...
Utilization of sludge from ready-mixed concrete plants as a …
— The work presented herein has focused on the effect of the incorporation of sludge coming from ready-mixed concrete plants into mortars. As the sludge heavy metals and metalloid elements contents are close to the criteria of acceptance of inert wastes at landfills, it seems appropriate to propose a new valorization way: the incorporation in ...
Concrete & Cement Filter Press Plants | Sludge …
Concrete Filter Press Plants. ... Sludge water produced from stone fabrication presents unique challenges in sludge removal and in recycling of the water. The nature of the slurry varies by stone type, shop equipment …
Sustainable management and utilisation of concrete slurry …
— Effect of sludge water from ready-mixed concrete plant on properties and durability of concrete. Cem. Concr. Comp., 28 (5) (2006), pp. 441-450. View PDF View ... Physical–chemical and mineralogical characterization of fine aggregates from construction and demolition waste recycling plants. J. Clean. Prod., 52 (2013), pp. 438-445. View …
Bench-Scale Operation of a Concrete Sludge Recycling Plant …
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.
An Eco-Friendly Neutralization Process by Carbon …
— 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 …
Treatment of Hazardous Sludge from Water and Wastewater Treatment Plants
— Based on the review, sludge has good potential to be recycled and reused as a new product, such as an additive of concrete mixture and plant fertiliser. However, the unwanted elements inside the sludge have reduced its potential for commercialisation. Therefore, in this chapter, the production, characteristics, and conversational and …
Use of ready-mixed concrete plant sludge water in concrete …
— Nevertheless, the complete recycling of sludge water has been considered in concrete mixing plants because of the great benefit in terms of disposal cost reduction and environmental conservation (Chini and Muszynski, 2001, Su et al., 2002, Paolini and Khurana, 1998).
Use of Sewage Sludge for the Substitution of Fine Aggregates for Concrete
This work analyzes the use of sewage sludge, generated in wastewater treatment plants, as an alternative for small aggregate to be used in concrete. Concrete cylindrical specimens with height h = 20 cm and diameter D = 10 cm were prepared using different amounts of sludge in the substitution of fine aggregates. Portland cement (CP II Z 32 RS cement) …
Characterization of ready-mixed concrete plants sludge and
— 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 …
Recycling water treatment sludge into a novel eco-friendly …
— 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 …
Alkalinity control in sludge propels the conversion of concrete …
— 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 …
The Utilization of Waste Water from a Concrete Plant in the …
Recipe R2—designed mixture consisting of 450 g of CEM I 42.5 R Hranice cement, 1350 g of standardized sand CEN EN 196-1, 180 g of pure mixing water (controlled concrete plant source) and 45 g of sludge water (recycled in the concrete plant by means of recycling equipment used for STETTER agitation truck cleaning, coarse aggregate is filtered ...
Bench-Scale Operation of a Concrete Sludge Recycling Plant
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.
Bench-Scale Operation of a Concrete Sludge Recycling Plant
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 …
Fate of Sulfate in Municipal Wastewater Treatment Plants …
— 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 …
Effect of sludge water from ready-mixed concrete plant on properties
— 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 …
Concrete Recycling Plant (CRP)
CRP plants are designed especially for the recycling of valuable aggregates and sand from discarded material as well as for the improvement of site environment. Strategic positioning of the CRP plant also enables all the …
REUSE OF ALUM SLUDGE IN CONSTRUCTION MATERIALS AND CONCRETE …
— 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 ...
Synergistic effect of dry sludge from waste wash water of concrete …
— 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.