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Related Concept Videos

Design Example: Sustainability in Concrete Building01:26

Design Example: Sustainability in Concrete Building

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As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground...
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Waterproofing and Anti-Bacterial Admixtures in Concrete01:22

Waterproofing and Anti-Bacterial Admixtures in Concrete

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Concrete's susceptibility to water absorption is due to the capillary action within the pores of its hydrated cement paste. This action draws water in, creating the need for waterproofing admixtures to prevent such penetration. The efficacy of these admixtures is contingent upon the water pressure, with variations arising from different conditions such as rain, capillary rise, or hydrostatic pressure in structures intended to hold water.
Waterproofing admixtures render concrete hydrophobic,...
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Concrete01:20

Concrete

510
Concrete is a vital construction material extensively used worldwide, primarily valued for its strength, durability, and versatility, which it provides for various structural designs. Concrete generally comprises ingredients like Portland cement, coarse gravel, fine sand, and water. Concrete can be mixed by simple hand methods or industrially at computer-controlled plants. The mixture consists of aggregates and a paste made from water and Portland cement. This paste coats the aggregates and,...
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Microcracking in Concrete01:20

Microcracking in Concrete

235
Microcracking in concrete refers to the tiny cracks that can form within the material even before any external load is applied. These microcracks typically occur at the interface between the coarse aggregate and the hydrated cement paste, often as a result of differential volume changes prompted by variations in stress-strain behavior, as well as thermal and moisture movement. Initially, these microcracks remain stable and do not grow substantially until the concrete is stressed to about 30...
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Alkali Aggregate Reaction in Concrete01:26

Alkali Aggregate Reaction in Concrete

221
The alkali-aggregate reaction in concrete involves natural siliceous minerals in aggregates reacting with alkaline hydroxides derived from cement alkalis. This reaction forms an alkali-silica gel that absorbs water, swells, and increases in volume, which is confined by the surrounding cement paste, creating internal pressures that crack and disrupt the concrete. The extent of expansion and damage can be partly attributed to the alkali-silica reaction's osmotic hydraulic pressure and the...
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Frost Resistant Concrete01:29

Frost Resistant Concrete

156
Concrete's susceptibility to frost damage during freeze-thaw cycles demands strategic measures to enhance its frost resistance. Employing techniques like air entrainment, adjusting the water-cement ratio, proper curing, and selecting appropriate aggregates are essential.
Introducing microscopic air bubbles into the concrete mix through air entrainment creates small voids that accommodate ice expansion, thereby reducing internal pressures and preventing cracking. The optimal amount of...
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Related Experiment Video

Updated: Oct 15, 2025

Production and Analysis of Sporosarcina pasteurii Biocement Bricks Using Custom 3D-Printed Molds for Unconfined Compression Tests
05:38

Production and Analysis of Sporosarcina pasteurii Biocement Bricks Using Custom 3D-Printed Molds for Unconfined Compression Tests

Published on: March 7, 2025

547

Microbial Concrete-a Sustainable Solution for Concrete Construction.

Parampreet Kaur1,2, Varinder Singh3, Amit Arora4

  • 1Department of Civil Engineering, Shaheed Bhagat Singh State University, Ferozepur, India. parampreet@sbsstc.ac.in.

Applied Biochemistry and Biotechnology
|October 30, 2021
PubMed
Summary

Bio-concrete, utilizing microorganisms, offers enhanced durability and reduced porosity for greener construction. This eco-friendly material shows promising improvements over traditional concrete, especially when compared with industrial waste composites.

Keywords:
BacteriaCompressive strengthMICPRCPTWater absorption

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Area of Science:

  • Civil Engineering
  • Materials Science
  • Environmental Science

Background:

  • Concrete is a vital construction material facing increasing global demand.
  • Traditional concrete production has significant environmental implications.
  • There is a need for sustainable and durable construction materials like bio-concrete.

Purpose of the Study:

  • To review the role of microorganisms in enhancing concrete properties.
  • To discuss the mechanism of microbial-induced calcium carbonate precipitation (MICP).
  • To compare bio-concrete performance with traditional concrete and industrial waste composites.

Main Methods:

  • Review of existing literature on microbial applications in concrete.
  • Analysis of microbial influence on concrete porosity and water absorption.
  • Comparative study of bio-concrete and traditional concrete properties (compressive strength, flexural strength, water absorption).

Main Results:

  • Microorganisms enhance concrete durability and compressive strength.
  • Microbial action reduces concrete porosity and water absorption.
  • Bio-concrete demonstrates improved performance compared to conventional concrete and some industrial waste composites.

Conclusions:

  • Microbial integration offers a novel, eco-friendly approach to concrete production.
  • Bio-concrete presents a sustainable alternative for the construction industry.
  • Further research into MICP can optimize bio-concrete for enhanced building material applications.