scholarly journals Experimental Study on Recycling of Bituminous Aggregate in Cement Concrete: A Research

2021 ◽  
Vol 9 (VI) ◽  
pp. 799-805
Author(s):  
Manoj Kumar Mishra
Keyword(s):  
Experimental Study ◽  
Road Construction ◽  
Construction Cost ◽  
Recycled Aggregate ◽  
Recycled Aggregates ◽  
Cement Concrete ◽  
Cost Component ◽  
The Road ◽  
Total Construction Cost ◽  
Recycled Material

Recycling of bituminous aggregates in cement concrete has been selected for the present study to determine suitability of recycled material in road construction. This will help in achieving economy in road construction as well as saving on environment degradation in term of reduced mining and less pollution. Construction and maintenance of roads and highways involve millions of tonnes of aggregate. Considering the scarcity of fresh aggregate, replacement of part of the fresh aggregate with recycled aggregate is considered in the present study. Construction of the road is quite cost intensive. Material alone cost more than 60% of the total construction cost, out of which aggregate cost component, is approximately 30%. We can use recycled aggregate in place of fresh aggregate in construction of road and provide economy to the project. For making best use of recycled aggregates, it is essential to study the suitability of the same in various pavement components. In the present study recycled aggregate are used in Granular Sub Base (GSB) and Wet Mix Macadam (WMM).

scholarly journals Experimental Study on Recycling of Bituminous Aggregate in Cement Concrete

2021 ◽  
Vol 9 (VI) ◽  
pp. 5392-5398
Author(s):  
Manoj Kumar Mishra
Keyword(s):  
Experimental Study ◽  
Road Construction ◽  
Construction Cost ◽  
Recycled Aggregate ◽  
Recycled Aggregates ◽  
Cement Concrete ◽  
Cost Component ◽  
The Road ◽  
Total Construction Cost ◽  
Recycled Material

Recycling of bituminous aggregates in cement concrete has been selected for the present study to determine suitability of recycled material in road construction. This will help in achieving economy in road construction as well as saving on environment degradation in term of reduced mining and less pollution. Construction and maintenance of roads and highways involve millions of tonnes of aggregate. Considering the scarcity of fresh aggregate, replacement of part of the fresh aggregate with recycled aggregate is considered in the present study. Construction of the road is quite cost intensive. Material alone cost more than 60% of the total construction cost, out of which aggregate cost component, is approximately 30%. We can use recycled aggregate in place of fresh aggregate in construction of road and provide economy to the project. For making best use of recycled aggregates, it is essential to study the suitability of the same in various pavement components. In the present study recycled aggregate are used in Granular Sub Base (GSB) and Wet Mix Macadam (WMM).

Experimental Study on Compressive Strength of Recycled Aggregate Concrete with Different Replacement Ratios

2012 ◽  
Vol 174-177 ◽  
pp. 1277-1280 ◽  
Author(s):  
Hai Yong Cai ◽  
Min Zhang ◽  
Ling Bo Dang
Keyword(s):  
Experimental Study ◽  
Compressive Strength ◽  
Failure Mode ◽  
Failure Process ◽  
Recycled Concrete ◽  
Recycled Aggregate Concrete ◽  
Recycled Aggregate ◽  
Recycled Aggregates ◽  
Replacement Ratio ◽  
Aggregate Concrete

Compressive strengths of recycled aggregate concrete(RAC) with different recycled aggregates(RA) replacement ratios at 7d, 28d, 60d ages are investigated respectively. Failure process and failure mode of RAC are analyzed, influences on compressive strength with same mix ratio and different RA replacement ratios are analyzed, and the reason is investigated in this paper. The experimental results indicate that compressive strength of recycled concrete at 28d age can reach the standard generally, it is feasible to mix concrete with recycled aggregates, compressive strength with 50% replacement ratio is relatively high.

scholarly journals Mathematical and experimental study of deformations of a steel roll of a road roller with a variable geometry of a contact surface

2019 ◽  
Vol 25 (25) ◽  
pp. 1-7
Author(s):  
Mikhail Doudkin ◽  
Alina Kim ◽  
Murat Sakimov
Keyword(s):  
Experimental Study ◽  
Contact Surface ◽  
Road Construction ◽  
Construction Equipment ◽  
Variable Geometry ◽  
Approximate Methods ◽  
Steel Roll ◽  
The Road ◽  
Elliptical Shape ◽  
Circular Design

Abstract The lack of a common methodology on compaction theory stimulates developers of road construction equipment to create various approximate methods for their calculation, the number of which, at the present time, is comparable with the nomenclature of the proposed designs of rollers. The article presents the analysis of the deformable shell behavior of a road roller, and the compacted material under its compacting roller, in a situation when a rigid circular shell of the roller is replaced by a forcefully deformable elliptical shape, which, unlike the circular design, allows variation, adjustment and optimization of the road roller impact on the material to be compacted.

Performance Evaluation of Epoxy Asphalt and Study of Epoxy Asphalt Used on Deck Surfacing of Concrete Bridge

2011 ◽  
Vol 142 ◽  
pp. 157-160
Author(s):  
Yan Chun Li ◽  
Pan Zhang ◽  
Rui Lv ◽  
Yu Zhuo Xu ◽  
Guo Jing Hou
Keyword(s):  
Performance Evaluation ◽  
Chemical Properties ◽  
Road Construction ◽  
Concrete Bridge ◽  
Physical And Chemical Properties ◽  
Cement Concrete ◽  
The Road ◽  
Epoxy Asphalt ◽  
Physical And Chemical ◽  
And Chemical Properties

Accoding to the current situation of deck surfacing with Epoxy asphalt and its development in China and abroad, this paper has analyzed the feature of the function of Epoxy asphalt used on surface pavement of cement concrete bridge through analyzing the physical and chemical properties of Epoxy asphalt and further testing the superiority of Epoxy asphalt in the road construction.

Experimental Study on the Effect of Recycled Aggregate and GGBS on Flexural Behaviour of Reinforced Concrete Beam

2016 ◽  
Vol 857 ◽  
pp. 101-106
Author(s):  
P.R. Deepa ◽  
Joy Anup
Keyword(s):  
Experimental Study ◽  
Raw Materials ◽  
Reinforced Concrete Beam ◽  
Recycled Concrete ◽  
Recycled Aggregate ◽  
Recycled Aggregates ◽  
Partial Replacement ◽  
Concrete Aggregate ◽  
Granulated Blast Furnace Slag ◽  
Furnace Slag

Globally, the concrete industry consumes large quantities of natural resources, which are becoming insufficient to meet the increasing demands. Cement and aggregates are major constituents of concrete. Utilisation of waste materials in concrete instead of raw materials reduces environmental pollution. Ground-granulated blast-furnace slag (GGBS) is a by-product of steel industry. It has cementatious property. Recycled aggregates are obtained from demolishing waste. By using recycled concrete aggregate and GGBS in concrete we can reduce environmental problem to some extent. This experimental study evaluate the effective utilisation of GGBS and recycled aggregate in concrete. In this study GGBS is used as partial replacement for cement and recycled aggregate as partial replacement for coarse aggregate.

EXPERIMENTAL STUDY OF THE EFFECT OF WATERPROOF MATERIAL ON WATER-THERMAL REGIME OF THE SOIL SAMPLE

2015 ◽  
Vol 5 (4) ◽  
pp. 53-58
Author(s):  
Tatiana Vladimirovna PERMITINA
Keyword(s):  
Experimental Study ◽  
Soil Sample ◽  
Active Layer ◽  
Thermal Regime ◽  
Mechanical Characteristics ◽  
Road Construction ◽  
The Road ◽  
Far North ◽  
Temperature And Humidity ◽  
Physical And Mechanical Characteristics

This article deals with the problem of water and thermal regime of subgrade of the road in the far north. The measures to regulate water and thermal regime of soil of roadbed are described. An experimental study to evaluate the effect of the waterproof materials on the temperature and humidity regime of the road construction. The tasks, aimed at identifying patt erns of change in the physical and mechanical characteristics and the migration of moisture in the subgrade of the road and in the active layer of permafrost, reinforced waterproof element, are set.

scholarly journals Research on the possibility of applying concrete using recycled aggregates from waste concrete to build rural roads

2020 ◽  
Vol 61 (HTCS6) ◽  
pp. 66-73
Author(s):  
Huy Quang Dang ◽  
Phuc Dinh Hoang ◽  
Thang Anh Bui ◽  
Trang Huong Thi Ngo ◽  
Anh Tuan Chu ◽  
...  
Keyword(s):  
Experimental Test ◽  
Concrete Strength ◽  
Road Construction ◽  
Environmental Benefits ◽  
Recycled Aggregate ◽  
Recycled Aggregates ◽  
Concrete Aggregate ◽  
Rural Roads ◽  
Waste Concrete ◽  
The World

Many researchers over the world have pointed out the great economic and environmental benefits of using recycled aggregate from waste concrete to make concrete. In Vietnam, although the demand for concrete is increasing in both civil and infrastructure construction such as rural concrete roads, however, the use of waste concrete aggregate to make concrete still has not been adequately studied. With the experimental test, the authors have studied the change in the strength of concrete using large recycled aggregates, thereby clarifying the possibility of using this type of concrete in rural concrete road construction. The results show that, if the amount of recycled aggregate to replace natural aggregate is below 30%, the concrete strength achieved is slightly reduced compared to the control concrete. As the amount of recycled aggregate increases, the strength of the concrete decreases significantly but still can meet the strength requirement of concrete in rural roads.

scholarly journals Providing interlayer adhesion of dissimilar layers of top road surfaces

2021 ◽  
Vol 274 ◽  
pp. 02003
Author(s):  
Talgat Gabdullin ◽  
Marat Makhmutov
Keyword(s):  
Layer Thickness ◽  
Asphalt Concrete ◽  
Road Construction ◽  
Concrete Mixture ◽  
Cement Concrete ◽  
The Road ◽  
Road Pavement ◽  
Concrete Base ◽  
Pavement Layers ◽  
Asphalt Concrete Pavement

The article reviews the option of how to make the top pavement of asphalt-concrete mixture adhere reliably to the base, which is the underlying cement-concrete coating. The bitumen-latex emulsion is suggested as a binder for the two pavement layers. The research aimed to determine the optimal layer thickness of the bituminous-latex emulsion to be applied and achieve the maximum interlayer adhesion between the top asphalt-concrete pavement and the cement-concrete base. After full-scale experiments, the required layer thickness of the bitumen-latex emulsion was 2 mm. With this layer thickness of the binder, road pavement layers do not delaminate and shear when stressed by the intensive flows of vehicles moving on the roads. The results obtained are important for the road construction industry for suggesting the formulation of bitumen-latex emulsion and finding the most effective layer thickness to be applied. The suggested formulation of a bitumen-latex emulsion is frost-resistant. The article describes the experimental steps for determining the optimal application thickness at a fair length. The maintenance-free life of roads with an asphalt-concrete mixture on a cement-concrete base interlayered with a bitumen-latex emulsion as a binder is assumed to get much longer.

scholarly journals On the Applicability of ATR-FTIR Microscopy to Evaluate the Blending between Neat Bitumen and Bituminous Coating of Reclaimed Asphalt

Coatings ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 240 ◽  
Author(s):  
Alexandros Margaritis ◽  
Giorgio Tofani ◽  
Geert Jacobs ◽  
Johan Blom ◽  
Serge Tavernier ◽  
...  
Keyword(s):  
Road Construction ◽  
Attenuated Total Reflectance ◽  
Construction Sector ◽  
Ftir Microscopy ◽  
Ecological Benefits ◽  
Spectra Analysis ◽  
Promising Alternative ◽  
Reclaimed Asphalt ◽  
The Road ◽  
Recycled Material

The utilization of Reclaimed Asphalt (RA) in the road construction sector induces considerable economic and ecological benefits. The blending of the recycled material with new components is believed to be of great importance for the mixture’s properties. An extensive knowledge of the blending of the materials is crucial in optimizing the use of RA, especially at higher recycling rates. In this paper, the applicability of Fourier transform infrared (FTIR) microscopy in attenuated total reflectance (ATR) mode to study the bituminous coating of RA granulates is investigated. This method is a promising alternative to trace heterogeneous areas within the coating compared to methods that require extraction and recovery of bitumen. A method for sample preparation and FTIR spectra analysis is proposed. Four different samples were analyzed: a reference RA granulate, two types of RA granulates mixed with neat bitumen, and a RA granulate with rejuvenator. The results show that the use of ATR-FTIR microscope allows the tracing of different components, indications of blending, as well as proof of rejuvenation of the aged bituminous area.

scholarly journals Feasible Use of Recycled Concrete Aggregates with Alumina Waste in Road Construction

Materials ◽  
2021 ◽  
Vol 14 (6) ◽  
pp. 1466
Author(s):  
Manuel Cabrera ◽  
Mónica López-Alonso ◽  
Laura Garach ◽  
Javier Alegre ◽  
Javier Ordoñez ◽  
...  
Keyword(s):  
Second Life ◽  
Road Construction ◽  
Recycled Concrete ◽  
Construction And Demolition Waste ◽  
Recycled Aggregates ◽  
Demolition Waste ◽  
The Road ◽  
Road Pavement ◽  
Pavement Base ◽  
By Products

The management of different industrial by-products, such as recycled aggregates from construction and demolition waste and alumina by-products, as well as the reduction of landfill deposits by incorporating these products in a second life cycle, were the focus of this work. The aim of this study was to demonstrate the technical viability of using these waste and by-product as a material for road pavement base layers. For this purpose, a real-scale application was carried out, and the behavior of three types of materials, applied on a section of an experimental road under real vehicle traffic conditions, was studied and compared. Three materials were used in these sections applied in the road sub-bases. First, a control material composed of a type of artificial gravel was used to be compared with the rest of materials; the second material was composed of recycled aggregates, and the third was composed of a mix of recycled aggregates and alumina waste. The results concluded that the effectiveness of the sections built using recycled aggregates and alumina waste was very positive and similar those constructed using natural aggregates.

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