Editing Syntactic foam (section)

===Strength===
The [[compression (physics)|compressive]] properties of syntactic foams, in most cases, strongly depend on the properties of the filler particle material. In general, the [[compressive strength]] of the material is proportional to its density. Cementitious syntactic foams are reported to achieve compressive strength values greater than {{cvt|30|MPa|ksi}} while maintaining densities lower than {{cvt|1.2|g/cm3|oz/in3}}.<ref>{{cite journal |doi=10.1016/S0263-8223(03)00060-6 |title=Hygrothermal studies on syntactic foams and compressive strength determination |author1=Gupta, Nikhil |author2=Woldesenbet, Eyassu |date=September 2003 |volume=61 |issue=4 |pages=311–320 |journal=Composite Structures}}<!--URL: https://d1wqtxts1xzle7.cloudfront.net/75413366/s0263-8223_2803_2900060-620211130-29259-15hzmp6-libre.pdf--></ref>

The matrix material has more influence on the [[tension (physics)|tensile]] properties. [[Tensile strength]] may be highly improved by a chemical surface treatment of the particles, such as [[silanization]], which allows the formation of strong bonds between glass particles and epoxy matrix. Addition of fibrous materials can also increase the tensile strength.{{Citation needed|date=August 2012}}