In this episode of the Lightweight Concrete Showdown, we make a highstrength lightweight concrete test panel using a mix of 4 parts perlite, 1 part portland cement, 25% of the liquid volume ratio of PVA (Polyvinyl Acetate or white glue) along with some fiberglass. The PVA gives strength to the finished concrete by gluing the ingredients together for a stronger bond. The fiberglass acts like a steel reinforcement adding tensile strength to the concrete.

Once this block has fully cured after about a month, it will be tested for strength and compared to other concrete test blocks made with a variety of lightweight aggregates and concrete admixtures / additives. The strength test consists of this 1" thick modified perlite lightweight concrete panel spanning a 28" space without any additional reinforcement. A bucket in the center of the panel will have weight added until the panel breaks.

See the full series of creating concrete test blocks made with different lightweight concrete aggregates and mix ratios and watch us break them all to see a comparison of the strength that can be achieved from these lightweight concrete mixes.

Making Full Strength Mortar Control Test Block    • Lightweight Concrete Showdown  Full ...  
Concrete Strength Testing Control Block 3:1 Mix Ratio    • Concrete Strength Testing  Control B...  
Making Lightweight Concrete With Perlite (4:1)    • Making Lightweight Concrete With Perl...  
Lightweight Concrete Strength Testing Perlite 4:1 Mix Ratio    • Lightweight Concrete Strength Testing...  
Making Stronger Lightweight Concrete With Perlite (2:1)    • Making Stronger Lightweight Concrete ...  
Mixing Vermiculite Concrete (3:1 Ratio)    • Mixing Vermiculite Concrete (3:1 mix)  
Lightweight Concrete Strength Testing 3:1 Vermiculite Mix Ratio    • Lightweight Concrete Strength Testing...  
Mixing Concrete With Vermiculite (6:1)    • Mixing Concrete With Vermiculite (6:1)  

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