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A Study on the Reuse of Plastic Concrete Using Extended

A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding Admixtures. Lobo C (1), Guthrie WF (2), Kacker R (2). Author information: (1)National Ready Mixed Concrete Association, 900 Spring Street, Silver Spring, MD 20910. (2)National Institute of Standards and Technology, Gaithersburg, MD 20899-0001.

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Plastic Concrete Reuse Using Extended Set-Retarding

hdl.handle/20.500.11937/21451 Collection Curtin Research Publications Abstract This paper reports a preliminary experimental study on the effect of extended setretarding admixture or ‘stabiliser’ on the plastic and hardened properties of grouts and concretes containing general purpose Portland cement, blended cement and low heat cement.

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(PDF) A Study on the Reuse of Plastic Concrete Using

Sep 01, 1995  The disposal of ready mixed concrete truck wash water and returned plastic concrete is a growing concern for the ready mixed concrete industry. Recently, extended set-retarding admixtures, or...

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A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding ...

Recently, extended set-retarding admixtures, or stabilizers, which slow or stop the hydration of portland cement have been introduced to the market. Treating truck wash-water or returned plastic concrete with stabilizing admixtures delays its setting and hardening, thereby facilitating the incorporation of these typically wasted materials in ...

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Plastic Concrete Reuse Using Extended Set-Retarding Admixtures

Plastic Concrete Reuse Using Extended Set-Retarding Admixtures. 167391_41863_63555.pdf (574.0Kb) Access Status. Open access. Authors. ... Mali, Sarvesh and Ahmed, Shaikh Faiz Uddin and Nikraz, Hamid. 2011. Plastic Concrete Reuse Using Extended Set-Retarding Admixtures, Proceedings of the Concrete 2011 Conference, Oct 12 2011.

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A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding ...

Sep 01, 1995  The admixture suspends the hydration reaction of cement compounds and allows the holding of plastic concrete or truck-mixer wash water for several hours. The treated concrete or wash water can then be incorporated in the next load of concrete. The admixture is called an extended set-retarding admixture.

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Plastic Concrete Reuse Using Extended Set-Retarding Admixtures

This paper reports a preliminary experimental study on the effect of extended setretarding admixture or ‘stabiliser’ on the plastic and hardened properties of grouts and concretes containing general purpose Portland cement, blended cement and low heat cement. The effect of stabiliser on efflux time or ‘flow time’ of GP cement grout was studied and the dosage required

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(PDF) A Study on the Reuse of Plastic Concrete Using Extended Set ...

Sep 01, 1995  A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding Admixtures September 1995 Journal of research of the National Institute of Standards and Technology 100(5)

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A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding ...

Dec 31, 2014  A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding Admixtures Item Preview remove-circle Share or Embed This Item. Share to Twitter. Share to Facebook. Share to Reddit. Share to Tumblr. Share to Pinterest. Share via email.

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Volume 100, Number 5, September–October 1995 [J. Res. Natl

A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding Admixtures Volume 100 Number 5 September–October 1995 Colin Lobo National Ready Mixed Concrete Association, 900 Spring Street, Silver Spring, MD 20910 and William F. Guthrie and Raghu Kacker National Institute of Standards and Technology, Gaithersburg, MD 20899-0001

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File:A Study on the Reuse of Plastic Concrete Using Extended

File:A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding Admixtures (IA jresv100n5p575).pdf

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A study on the reuse of plastic concrete using extended set-retarding ...

Sep 01, 1995  U.S. Department of Energy Office of Scientific and Technical Information. terms: Advanced search options. ...

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Plastic Concrete Reuse Using Extended SetRetarding Admixtures

1998-5-17 A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding Admixtures Volume 100 Number 5 September–October 1995 Colin Lobo National Ready Mixed Concrete Association, 900 Spring Street, Silver Spring, MD 20910 and William F. Guthrie and Raghu Kacker National Institute of Standards and Technology, Gaithersburg, MD 20899-0001

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A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding ...

Mar 01, 2012  The disposal of ready mixed concrete truck wash water and returned plastic concrete is a growing concern for the ready mixed concrete industry. Recently, ext... A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding Admixtures

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A Step towards Sustainable Concrete with Substitution of Plastic

Cement, sand, coarse aggregate, water, and admixtures are used to make concrete. After water, concrete is the second most used material in the building construction [1,2,3].The quality of aggregates, which make up 65–80 percent of the total quantity of concrete, have a significant impact on concrete strength [].By the end of 2025, the global materials construction industry

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Pouring Fresh Concrete Admixtures High Range Water Reducers

Concrete admixtures. Adding chemical admixtures, such as high range water reducers, can be very effective in maintaining workability, without risk of exceeding the maximum water content specified. Retarding admixtures. Concrete is subject to slump loss over time, and the use of a set retarding admixture in the concrete is a simple adjustment to ...

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ACI 305r_99高温浇筑砼_word文档在线阅读与下载_免费文档

The use of fly ash may reduce the rate of slump loss of concrete under hot weather conditions (Ravina 1984; Gaynor et al 1985). 2.7—Chemical admixtures 2.7.1 Various types of chemical admixtures (ASTM C 494) have been found beneficial in offsetting some of the un-desirable characteristics of concrete placed during periods of high ambient ...

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Plastic Concrete Reuse Using Extended Set-Retarding Admixtures

Plastic Concrete Reuse Using Extended Set-Retarding Admixtures. Sashikant Mali. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 33 Full PDFs related to this paper. READ PAPER. Plastic Concrete Reuse Using Extended Set-Retarding Admixtures. Download. Plastic Concrete Reuse Using Extended Set-Retarding

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A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding ...

Sep 01, 1995  DOI: 10.6028/jres.100.043 Corpus ID: 12770867. A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding Admixtures @article{Lobo1995ASO, title={A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding Admixtures}, author={Colin L. Lobo and William F. Guthrie and Raghu N Kacker}, journal={Journal of Research of the

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A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding ...

Dec 31, 2014  A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding Admixtures Item Preview remove-circle Share or Embed This Item. Share to Twitter. Share to Facebook. Share to Reddit. Share to Tumblr. Share to Pinterest. Share via email.

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Plastic Concrete Reuse Using Extended Set-Retarding Admixtures

Plastic Concrete Reuse Using Extended Set-Retarding Admixtures . This paper reports a preliminary experimental study on the effect of extended setretarding admixture or ‘stabiliser’ on the plastic and hardened properties of grouts and concretes containing general purpose Portland cement, blended cement and low heat cement.

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A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding ...

(1995) Lobo et al. Journal of Research of the National Institute of Standards and Technology. The disposal of ready mixed concrete truck wash water and returned plastic concrete is a growing concern for the ready mixed concrete industry. Recently, extended set-retarding admixtures, or

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A Study On The Reuse Of Plastic Concrete Using Extended

A Study on the Reuse ofPlastic Concrete Using Extended Set-Retarding Admixtures Volume 100 Number 5 September-October 1995 Colin Lobo National Ready Mixed Concrete Association, 900 Spring Street, Silver Spring, MD 20910 and William F. Guthrie and Raghu Kacker National Institute of Standards and Technology, Gaithersburg, MD 20899-0001

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A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding ...

Mar 01, 2012  The disposal of ready mixed concrete truck wash water and returned plastic concrete is a growing concern for the ready mixed concrete industry. Recently, ext... A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding Admixtures

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A Study on the Reuse of Plastic Concrete Using Extended Set-Retarding ...

Download PDF: Sorry, we are unable to provide the full text but you may find it at the following location(s): doi/10.6028/jres.10... (external link)

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Retarding admixtures - Concrete

Retarding admixtures have little or no effect other than to delay the setting of the cement. They do not plasticise significantly and have no effect on the water demand or other properties of the concrete. Retarding plasticising admixtures not only delay the setting of the cement but are also efficient plasticising water-reducers.

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Seven Must-Use Concrete Admixtures (Additives) - The Spruce

Feb 28, 2022  Concrete Admixtures: Air-Entrainment. Air entrained concrete can increase the freeze-thaw durability of concrete. This type of admixture produces a more workable concrete than non-entrained concrete while reducing bleeding and segregation of fresh concrete. Improved resistance of concrete to severe frost action or freeze/thaw cycles.

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(PDF) Use of Waste Plastic in Concrete Mixture as ... - Academia

Engineering (Building And Housing) Vol. 12, No. 6 [2] V. Kasselouri - Rigopoulou, S. Gavela, S. Kolias (2011) Pages 773-787 “Use Of Polymeric Wastes In The Concrete [12] Colin Lobo and William F. Guthrie and Raghu Production” Polymers in concrete: a vision for the Kacker “A Study on the Reuse of Plastic Concrete 21st century, Cement ...

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Use of RMC Wastewater in Concrete with Admixtures for

Nov 21, 2021  Lobo C, Guthrie W, Kacker R (1995) A Study on the reuse of plastic concrete using extended set-retarding admixtures. J Res Natl Ins Stand Technol 575–589. Google Scholar Abunqira IJM (2008) Removal of selected heavy metals from wash water generated from ready-mix concrete trucks.

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concrete recycling reuse of returned plastic concrete and

A Study on the Reuse of Plastic Concrete Using . The disposal of ready mixed concrete truck wash water and returned plastic concrete is a growing concern for the ready mixed concrete industry Recently, extended setretarding admixtures, or stabilizers, which slow or stop the hydration of portland cement have been introduced to the market

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Water-reducing Set-retarding Admixtures: Affects, and ... - The

🕑 Reading time: 1 minute Water-reducing and set-retarding admixtures are chemicals that slow down the initial reaction between cement and water by reducing the rate of water penetration to the cement and slowing down the growth of the hydration products. As a result, concrete stays workable longer than it would otherwise. The length of time []

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