Use of recycled wash water and returned plastic concrete in the production of fresh concrete

Borger, Jeff; Carrasquillo, R L; Fowler, David W.

doi:10.1016/1065-7355(94)90035-3

Cited by 76 publications

(36 citation statements)

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“…Excess concretes in the first pond, and muddy sludge in the second pond then are removed, and disposed of in the landfills. The disposal process is considerably expensive and also causes environmental problems due to the waste materials and high alkalinity in sludge water [1].…”

Section: Introductionmentioning

confidence: 99%

Effect of sludge water from ready-mixed concrete plant on properties and durability of concrete

Chatveera

Lertwattanaruk

Makul

2006

Cement and Concrete Composites

141

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Section: Introductionmentioning

confidence: 99%

Effect of sludge water from ready-mixed concrete plant on properties and durability of concrete

Chatveera

Lertwattanaruk

Makul

2006

Cement and Concrete Composites

141

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“…At the same time, there are new sustainable technologies being developed for the purpose of the recycling of fresh concrete waste [7], where even fresh concrete waste with a high content of calcium silicate was classified as a cement paste and used as a medium capturing CO 2 [8], similar to the use of sludge from waste water treatment plants [9]. The use of some types of waste waters and industrial waste materials in the concrete production sector has already been proven in the past [10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

The Utilization of Waste Water from a Concrete Plant in the Production of Cement Composites

et al. 2017

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This article presents the results of a study dealing with the utilization of sludge water from a concrete plant as a partial replacement for mixing water in the production of cement composites. The replacement of mixing water with sludge water from a concrete plant was carried out in the amounts of 20% and 50%. The following tests were carried out in order to determine the effect of the replacement of mixing water with sludge water from a concrete plant on the physical and mechanical properties of the cement composites: cement mortar consistency, beginning and end of setting, strength characteristics (compressive strength and flexural strength), and thermal properties.The measured values of the strength characteristics of the test specimens after 28 days of age confirm the possibility of replacing mixing water with sludge water from a concrete plant without significantly reducing the compressive and flexural strength.

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“…Although stabilizing admixtures are expensive, their use can be cost-effective when returned concrete is reused, disposal costs avoided and water use for truck washout reduced; 300 liters instead of 3,000 liters (Borger et al, 1994;Sealey, 2001). …”

Section: Batch On Topmentioning

confidence: 99%

Energy Efficiency Improvement and Cost Saving Oportunities for the Concrete Industry

Kermeli¹,

Worrell²,

Masanet³

2011

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The U.S. concrete industry is the main consumer of U.S.-produced cement. The manufacturing of ready mixed concrete accounts for more than 75% of the U.S. concrete production following the manufacturing of precast concrete and masonry units. The most significant expenditure is the cost of materials accounting for more than 50% of total concrete production costs -cement only accounts for nearly 24%. In 2009, energy costs of the U.S. concrete industry were over $610 million. Hence, energy efficiency improvements along with efficient use of materials without negatively affecting product quality and yield, especially in times of increased fuel and material costs, can significantly reduce production costs and increase competitiveness.The Energy Guide starts with an overview of the U.S. concrete industry's structure and energy use, a description of the various manufacturing processes, and identification of the major energy consuming areas in the different industry segments. This is followed by a description of general and process related energy-and cost-efficiency measures applicable to the concrete industry. Specific energy and cost savings and a typical payback period are included based on literature and case studies, when available. The Energy Guide intends to provide information on cost reduction opportunities to energy and plant managers in the U.S. concrete industry. Every cost saving opportunity should be assessed carefully prior to implementation in individual plants, as the economics and the potential energy and material savings may differ.

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Use of recycled wash water and returned plastic concrete in the production of fresh concrete

Cited by 76 publications

References 0 publications

Effect of sludge water from ready-mixed concrete plant on properties and durability of concrete

Effect of sludge water from ready-mixed concrete plant on properties and durability of concrete

The Utilization of Waste Water from a Concrete Plant in the Production of Cement Composites

Energy Efficiency Improvement and Cost Saving Oportunities for the Concrete Industry

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