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Related Concept Videos

Design Example: Managing Concrete Workability01:14

Design Example: Managing Concrete Workability

This example deals with managing the workability of concrete for a raft foundation project under hot weather conditions. Workability is crucial for ensuring the concrete is easy to place, compact, and finish. In this scenario, a slump test — a common method to measure the workability of fresh concrete — initially indicated low workability. This was attributed to the rapid water loss from the concrete mix, exacerbated by the high temperatures causing the course aggregates to heat up.
To address...
Additives and Fillers in Concrete01:29

Additives and Fillers in Concrete

Additives and fillers are integral to enhancing the properties of concrete. Pozzolans and blast-furnace slag are additives or admixtures due to their reactions with calcium hydroxide released during cement hydration. Fillers, which are finely ground and similar in fineness to Portland cement, improve concrete attributes such as workability density, and reduce capillary bleeding or cracking. Some fillers possess hydraulic properties or participate in benign reactions within the cement paste.
The...
Methods of Medium Optimization01:28

Methods of Medium Optimization

Optimizing growth media enhances microbial proliferation and maximizes product yield. Statistical experimental design methodologies provide structured and reproducible approaches, offering progressively higher levels of robustness and efficiency.The One-Factor-at-a-Time (OFAT) MethodThe One-Factor-at-a-Time (OFAT) method involves adjusting a single variable while keeping all others constant. However, it cannot detect interactions between variables, often leading to suboptimal outcomes when...
Abrasion Resistance of Concrete01:23

Abrasion Resistance of Concrete

Abrasion resistance is an essential characteristic of concrete that determines its durability and longevity under various wear conditions. Concrete surfaces are vulnerable to different types of abrasion. For instance, surfaces may wear down due to the constant movement of vehicles or be eroded by solids carried in water, as seen in concrete canal linings. Specific tests are conducted to measure the abrasion resistance of concrete.
One such test is the revolving disc test, where three plates...
Moisture Content and Bulking of Aggregate01:10

Moisture Content and Bulking of Aggregate

The moisture content of aggregates is a crucial factor in construction, particularly in concrete mixing, as it influences the total water required in the mix. Moisture content represents the water coated on the exterior surface of the aggregate existing in a saturated and surface-dry condition. The total water content of a moist aggregate is the sum of its moisture content and water absorption.
When aggregates are exposed to rain or sit in stockpiles, they absorb moisture, which must be...
Air-entraining Agents01:27

Air-entraining Agents

Air-entraining agents improve the durability and workability of concrete in climates with frequent freezing and thawing. These agents prevent cracks by introducing small air bubbles into the mix, creating spaces accommodating water expansion when temperatures drop. The air-entraining agents lower the surface tension of water, forming stable, small air bubbles. This method is more effective than having accidental large voids, as the intentional, smaller, and evenly distributed air voids improve...

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Updated: May 14, 2026

Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight
08:03

Advanced Self-Healing Asphalt Reinforced by Graphene Structures: An Atomistic Insight

Published on: May 31, 2022

Machine learning-driven optimization of asphalt performance using eco-friendly waste modifiers.

Priyam Nath Bhowmik1, Kezia Saini2, Pradyut Anand3,4

  • 1Department of Civil Engineering, VNR Vignana Jyothi Institute of Engineering and Technology, Hyderabad, Telangana, 500118, India.

Scientific Reports
|May 12, 2026
PubMed
Summary
This summary is machine-generated.

This study shows that adding 6% of Low-Density Polyethylene (LDPE) and Wood Apple Shell (WAS) powder to asphalt significantly improves road durability and moisture resistance. This sustainable approach reduces costs and reliance on virgin materials.

Keywords:
Complex shear modulusDynamic creep performanceEnvironmental sustainabilityIndirect tensile strength (ITS)Life-cycle costsSustainable construction

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Area of Science:

  • Civil Engineering
  • Materials Science
  • Environmental Science

Background:

  • Traditional asphalt production has significant environmental impacts, including high energy consumption and greenhouse gas emissions.
  • There is a growing need for sustainable road construction materials and methods to minimize environmental footprints.
  • Waste materials offer a potential solution for enhancing asphalt properties and reducing reliance on virgin resources.

Purpose of the Study:

  • To investigate the effects of incorporating Low-Density Polyethylene (LDPE) and Wood Apple Shell (WAS) powder on asphalt properties.
  • To evaluate the durability, moisture resistance, and economic viability of modified asphalt mixtures.
  • To identify optimal dosages of LDPE and WAS for sustainable road construction.

Main Methods:

  • Modified asphalt mixtures were prepared using varying dosages of LDPE and WAS powder.
  • Mechanical properties such as tensile strength (ITS) and stability were evaluated.
  • Moisture resistance was assessed using the Tensile Strength Ratio (TSR).
  • Economic viability and durability under simulated traffic loads were analyzed.

Main Results:

  • The optimal dosage for LDPE + WAS modified asphalt was found to be 6%.
  • This mixture exhibited enhanced tensile strength (2.1 MPa) and stability (30.0 kN), indicating improved load-bearing capacity.
  • Excellent moisture resistance was observed with a TSR of 90%, crucial for pavement longevity.
  • The 6% dosage demonstrated superior dynamic creep performance and complex shear modulus, enhancing durability.

Conclusions:

  • Incorporating 6% LDPE + WAS powder in asphalt mixtures offers significant improvements in mechanical properties and durability.
  • This sustainable approach enhances moisture resistance, leading to extended pavement life.
  • The use of waste materials in asphalt provides a cost-effective and environmentally friendly solution for road construction.