Self-Leveling Cementitious Armor Panels for Ballistic Resistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional cementitious compositions used for making ultra-high strength panels suffer from poor flow properties, requiring significant amounts of water, being non-self-leveling, and lacking sufficient compressive strength to resist ballistic and blast loads, making them difficult to process and install effectively.
Innovation Solution
A unique combination of inorganic and organic materials with specific size properties is used to create a cementitious composition that is self-leveling in its freshly mixed state and achieves ultra-high compressive strength upon curing, utilizing a fiber-reinforced cementitious core with a high-performance skin-reinforcement and controlled strength development, eliminating the need for excess water and enhancing handling and resistance to ballistic and blast impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If conventional cementitious compositions are used to achieve ultra-high strength panels, then compressive strength can be improved, but flow properties deteriorate and the mixture becomes difficult to process
Solution Approach 1:
The patent applies parameter changes by carefully controlling the water-cement ratio and adjusting the chemical composition of the cementitious mixture. By optimizing these parameters, the mixture achieves both self-leveling flow properties and high compressive strength, resolving the contradiction between ease of manufacture and strength.
Solution Approach 2:
The patent uses composite materials by combining cementitious components with fibers and other additives to create a multi-phase mixture. This composite approach allows the material to exhibit both good flow characteristics and high strength properties simultaneously.
2Device complexity
If conventional cementitious compositions are used, then material simplicity is maintained, but resistance to ballistic and blast loads is insufficient
Solution Approach 1:
The patent employs composite materials by incorporating fibers and other reinforcement elements into the cementitious matrix. This creates a composite structure that significantly improves resistance to ballistic and blast loads while maintaining relative material simplicity.
Solution Approach 2:
The patent applies local quality by strategically placing reinforcement elements and adjusting material properties in specific regions of the panel to optimize performance against ballistic and blast loads while keeping the overall composition simple.
3Ease of manufacture
If conventional cementitious compositions are used, then processing difficulty is moderate, but installation effectiveness is reduced due to poor flow properties
Solution Approach 1:
The patent applies parameter changes by optimizing the water-cement ratio and chemical composition to achieve self-leveling properties. This improves flow characteristics, making the material easier to install and more effective in achieving proper panel alignment and contact.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution results in cementitious panels with compressive strengths of up to 20,000 psi, enabling effective resistance to ballistic and blast loads while maintaining excellent flow properties and ease of installation, overcoming the limitations of traditional materials.
Implementation Method 1
Current practice for producing ultra-high strength cementitious compositions relies upon efficient particle packing and extremely low water dosage for achieving ultra-high material strength
Implementation Method 2
The cementitious core does not include silica flour, but does include pozzolanic material such as silica fume
Data Source
Figure 1~3
Figure 2
Figure 4~5
AI summary
A cementitious armor panel assembly including cementitious armor panel with ballistic and blast resistant properties attached to a frame structure to produce a protective structure. The cementitious armor panels have a continuous phase resulting from the curing of an aqueous mixture of an inorganic cement binder, an inorganic mineral filler having a particle size of about 150-450 microns, a pozzolanic mineral filler, a polycarboxylate based superplasticizer self-leveling agent, and water. The mixture may also contain alkanolamine, and acid or acid salt. Prior to curing, the continuous phase is reinforced with fiber uniformly distributed in the continuous phase before it is cured to form the panel. The panel may be reinforced with a skin attached to at least one surface of the panel.