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Related Concept Videos

Ferrocement01:30

Ferrocement

483
Ferro-cement is a distinctive construction material that represents an innovative variant of reinforced concrete, characterized by its unique composition and the method by which it is formed. Unlike standard reinforced concrete, which relies on larger steel bars for reinforcement, ferro-cement utilizes densely packed layers of mesh or fine rods, fully encased in cement mortar. This composition allows for the creation of structures that are significantly thinner and more flexible than their...
483
Types of Cement I01:21

Types of Cement I

232
Portland cement comes in several types, each with distinct properties and applications based on their chemical composition and hydration characteristics:
Type I (Ordinary Portland Cement) is widely used for general construction where special properties are not required. It has moderate sulfate resistance and heat of hydration.
Type II (Modified Cement) offers moderate resistance to sulfate attack and a lower rate of heat development compared to Type I. It is suitable for structures in...
232
Types of Cement II01:22

Types of Cement II

245
Portland blast-furnace cement is made by blending Portland cement clinker with granulated blast-furnace slag, which accounts for 25 to 65 percent of the cement's weight. Despite its similarities to ordinary Portland (Type I) cement in terms of fineness and setting times, its early strength is lower, though it achieves comparable strength later on. It's particularly suited for mass concrete structures and marine environments due to its lower heat of hydration and superior sulfate...
245
Strength of Cement01:20

Strength of Cement

291
Strength tests for cement are not performed directly on neat cement paste due to difficulty in obtaining consistent, reliable specimens. Instead, cement is typically tested in the form of cement-sand mortar.
For compressive strength tests, ASTM C 109-05 standards prescribe a cement-sand mix ratio of 1:2.75 and a water/cement ratio of 0.485 for making 2-inch cubes. These cubes are mixed, cast, and cured in saturated lime water at 23°C until testing. Flexural strength testing, outlined in...
291

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Related Experiment Video

Updated: Nov 13, 2025

Production and Analysis of Sporosarcina pasteurii Biocement Bricks Using Custom 3D-Printed Molds for Unconfined Compression Tests
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Deformation resilient cement structures using 3D-printed molds.

Seyed Mohammad Sajadi1, Chandra Shekhar Tiwary2, Amir Hossein Rahmati3

  • 1Department of Materials Science and NanoEngineering, Rice University, Houston, TX 77005, USA.

Iscience
|March 15, 2021
PubMed
Summary
This summary is machine-generated.

Researchers developed architected cementitious materials with a polymer coating, enhancing toughness and enabling deformation recovery. This novel approach creates resilient cement structures, overcoming traditional brittleness for advanced material applications.

Keywords:
materials mechanicsmaterials structuremechanical property

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Area of Science:

  • Materials Science
  • Civil Engineering
  • Polymer Science

Background:

  • Cementitious materials possess high compressive strength but are inherently brittle.
  • Nature-inspired designs overcome the strength-toughness trade-off using soft binders with brittle phases.

Purpose of the Study:

  • To develop architected cementitious materials with enhanced toughness and deformation resilience.
  • To explore an inverse replica approach for creating polymer-coated cement structures.

Main Methods:

  • Utilizing 3D printed polymer templates as sacrificial molds.
  • Molding cement pastes into architected polymer templates.
  • Solubilizing polymer templates to yield surface-coated cementitious structures.

Main Results:

  • Achieved polymer-coated architected cementitious structures with significantly higher toughness than conventional materials.
  • Demonstrated delayed damage propagation, resisting catastrophic failure.
  • Observed significant deformation recovery after unloading, a behavior atypical for cementitious materials.

Conclusions:

  • The inverse replica method successfully creates deformation-resilient cementitious structures.
  • Surface-coated architected cement offers a strategy to improve toughness and reduce brittleness.
  • This approach provides a simple method for building advanced, resilient cement-based materials.