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Porosity of recycled concrete with substitution of

Porosity of recycled concrete with substitution of

Porosity of recycled concrete with substitution of ...

Aug 01, 2002  1. Introduction. Current studies of recycled concrete (RC), with partial substitution of natural aggregate (NA) by recycled aggregate originating from concrete

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(PDF) Porosity of recycled concrete with substitution of ...

With respect to the recycled concrete aggregate, a water absorption capacity larger than 10 % is found because of the adherent cement mortar. In contrast, the

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Porosity of Recycled Concrete with Substitution of ...

Uncorrected Proof ARTICLE IN PRESS 1 Porosity of recycled concrete with substitution 2 of recycled concrete aggregate 3 An experimental study 4 Jose´ M.V.

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Porosity of recycled concrete with substitution of ...

Porosity of recycled concrete with substitution of recycled concrete aggregate: An experimental study. ... In this paper, we present the experimental analysis of

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(PDF) Porosity of recycled concrete with substitution of ...

Porosity of recycled concrete with substitution of recycled concrete aggregate. An experimental study. José M Gómez-Soberón. Download PDF. Download Full PDF Package.

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Porosity of the recycled concrete with substitution of ...

Citació Gomez, J. Porosity of the recycled concrete with substitution of recycled concrete aggregate. An experimental study. "Cement and concrete research", Març

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Porosity of Recycled Concrete with Substitution of ...

Uncorrected Proof ARTICLE IN PRESS 1 Porosity of recycled concrete with substitution 2 of recycled concrete aggregate 3 An experimental study 4 Jose´ M.V. Go´mez-Sobero´n* 5 3 Sur #503 Cd. Serda´n, Puebla, CP 75520, Mexico 67 Received 8 June 2001; accepted 5 March 2002 8 Abstract 9 In this paper, we present the experimental analysis of samples of recycled concrete (RC) with

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Jose M., (2002). “Porosity of recycled concrete with ...

“Porosity of recycled concrete with substitution of concrete aggregate: an experimental study”, Cem Concr Res, 32: 1301-11. has been cited by the following article: Article. Recycled Concrete Based on Retour de Toupie Aggregates (Fresh Concrete Waste)

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(PDF) Porosity and pore size distribution in recycled concrete

However, recycled aggregates are of higher porosity than natural aggregates, which can decrease the mechanical properties and durability of recycled concrete. The study reported in this paper ...

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Microstructural characterization of concrete prepared with ...

The results show that concretes with recycled aggregates exhibit typical microstructural features of the transition zone in normal strength concrete. Although overall porosity increases with increasing replacement, the interfacial bond is apparently stronger when recycled aggregates are used.

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Reliability Analysis of Freeze–Thaw Damage of Recycled ...

Sep 09, 2020  Before the test, the porosity distribution, porosity, and permeability of each group of specimens are calculated based on the principle of nuclear magnetic resonance (NMR), and the relationship between porosity and permeability of recycled concrete with ceramic powder is

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A REVIEW OF RECYCLED CONCRETE AGGREGATES AS A

and conserving energy. The use of recycled concrete aggregates has piqued the interest of many researchers by utilization of a full or partial substitution to that of natural aggregates in concrete mixtures. Over the last decade, a significant volume of literature has been published discussing the properties and microstructure of recycled ...

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On the classification of mixed construction and demolition ...

May 29, 2009  The substitution of granite aggregate with recycled aggregate within an average porosity of 1.9% causes, approximately, a 9% reduction in the concrete’s compressive strength, which is surprisingly high.

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Mechanical Behavior of Fine Recycled Concrete Aggregate ...

The paper describes the mechanical behavior of fine recycled concrete aggregate (FRCA) concrete according to the mineral admixtures. Three types of the mineral admixtures, i.e., fly ash (FA), ground-granulated blast-furnace slag (GGBS), and silica fume (SF), are used and the replacement ratios of FRCA are 50% and 100%. The dosages of the admixtures of FA, GGBS, and SF are determined with

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Frontiers Enhancement Treatment of Recycled Concrete ...

Jul 22, 2021  Aggregate is an essential component in concrete, occupying 60–70% of the concrete by volume. Nevertheless, the application of natural aggregate (NA) is restricted due to the finite resources and long regeneration period. Recycled concrete aggregate (RCA), as common CD waste, has received widespread attention for its usage to replace NA.

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(PDF) Mechanical Properties of Recycled Aggregates From ...

Sep 05, 2021  M oreover the porosity of the RA is higher than the natural . ... RA substitution rate in concrete and a 4% reduction in mixtures with a 15% RA ... The use of Recycled Concrete

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(PDF) Experimental Study on the Use of Trass as a ...

Experimental Study on the Use of Trass as a Supplementary Cementitious Material in Pervious Concrete. Abubakar Shuaibu. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 37 Full PDFs related to this paper. Read Paper.

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Structural Concrete: Early View

Effect of natural rubber latex on the shrinkage behavior and porosity of geopolymer concrete. ... Mechanical and durability properties of steel fiber-reinforced concrete containing coarse recycled concrete aggregate. ... Mechanical and durability characteristics of sustainable concrete modified with partial substitution of waste foundry sand ...

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Pierre Matar Lebanese University - Academia

Pierre Matar, Lebanese University, Civil Engineering Department, Faculty Member. Studies Recycled aggregate concrete for structural use, Recycled Concrete Aggregate, and Recycled

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Jose M., (2002). “Porosity of recycled concrete with ...

“Porosity of recycled concrete with substitution of concrete aggregate: an experimental study”, Cem Concr Res, 32: 1301-11. has been cited by the following article: Article. Recycled Concrete Based on Retour de Toupie Aggregates (Fresh Concrete Waste)

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Use of Recycled Concrete Aggregate in PCCP: Literature Search

Recycled concrete aggregate is angular with rough surfaces, has higher water absorption ... contents due to the greater porosity of the recycled aggregate themselves and to the entrained ... concrete aggregate (RCA) as a substitute for some of the virgin aggregate used to produce

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Influence of Recycled Aggregates on Mechanical Properties ...

of substitution of natural aggregate by recycled concrete aggregate on the compressive ... to determine the porosity of the hardened concrete. Porosity tests were performed at age ... Recycled concrete as a source of aggregate, ACI Journal 74 (1977) (5), pp.

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Performance Study of Eco-Concrete Based on Waste ...

et al [6]. Concerning Durability properties Porosity of concrete mixes with recycled aggregate increases with the level of substitution [12]. The use Recycled Aggregate in reinforced Concrete accelerates the steel corrosion process because of the electrical resistivity decreases and the porosity increases [13].

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Waste and by products recycled for concrete

recycled aggregates, the absorption showscan be attributed largely to the presence of old mortar attached to primary aggregates, which creates a high porosity of recycled aggregates [2]. III.1.4. mechanical strength Figure 4 the compressive strength at 28 days depending on the degree of substitution of recycled aggregates. Figure 4.

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A REVIEW OF RECYCLED CONCRETE AGGREGATES AS A

and conserving energy. The use of recycled concrete aggregates has piqued the interest of many researchers by utilization of a full or partial substitution to that of natural aggregates in concrete mixtures. Over the last decade, a significant volume of literature has been published discussing the properties and microstructure of recycled ...

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Materials Free Full-Text Prediction Model for ...

An improved relationship between porosity and compressive strength of brittle, porous materials is used to express the compressive strength of POC with recycled aggregate (RPOC), and the prediction for compressive strength of porous concrete with low-grade RA is constructed by analyzing the mechanism of compressive damage.

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Recycled Aggregates - Portland Cement Association

Recycled concrete aggregates produced from all but the poorest quality original concrete can be expected to pass the same tests required of conventional aggregates. Recycled concrete aggregates contain not only the original aggregates, but also hydrated cement paste. This paste reduces the specific gravity and increases the porosity compared to ...

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A Study of Concrete Made with Fine and Coarse Aggregates ...

This paper deals with the possibility of using fresh concrete waste as recycled aggregates in concrete. An experimental program based on two variables (proportion of fine aggregates replacement and proportion of coarse aggregates replacement) was implemented. The proportions of replacement were 0%, 50%, and 100% by mass of aggregates.

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Roles of mortar volume in porosity, permeability and ...

Jul 08, 2021  Pervious concrete is designed to be porous to allow permeation of water and air for combating the environmental and drainage problems arising from urbanization. However, despite extensive research, it is still not clear how best to design pervious concrete mixes to achieve good concurrent permeability-strength performance. In a previous study, the authors found that there is a

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CivilEng Free Full-Text The Effect of Reclaimed ...

Reclaimed asphalt pavement (RAP) is a recyclable aggregate produced during the demolition of old flexible pavements and consists of natural aggregates (NA) coated with aged bitumen. The detrimental effect caused by the bitumen coating on strength and porosity has limited the use of RAP on traditional cementitious systems. This study investigates the potential use of fine RAP to substitute NA ...

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Mix Design and Properties of Recycled Aggregate Concretes ...

Aug 26, 2014  This work is devoted to the study of fresh and hardened properties of concrete containing recycled gravel. Four formulations were studied, the concrete of reference and three concretes containing recycled gravel with 30, 65 and 100 % replacement ratios. All materials were formulated on the basis of S4 class of flowability and a target C35 class of compressive strength according to the

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Reclaimed Asphalt Pavement as a Substitution to Natural ...

Using Recycled Concrete Aggregates in New Zealand Ready-Mix Concrete Production Journal of Materials in Civil Engineering April 2010 Laboratory Performance of Asphalt Mixtures Containing Recycled Asphalt Shingles, Reclaimed Asphalt Pavement, and Recycling Agents

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Frontiers Enhancement Treatment of Recycled Concrete ...

Jul 22, 2021  Aggregate is an essential component in concrete, occupying 60–70% of the concrete by volume. Nevertheless, the application of natural aggregate (NA) is restricted due to the finite resources and long regeneration period. Recycled concrete aggregate (RCA), as common CD waste, has received widespread attention for its usage to replace NA.

get price