Resistance of Polymer Dispersion Additive Modified Concrete to Light Liquids Action

Abstract

Numerous concrete and reinforced concrete structures (industrial floors, petrol station or manoeuvring park pavements, elements of sewage system) are subjected to danger of permanent or periodical action of petroleum liquids that often causes the considerable reduction in concrete strength as well as decrease of bond between concrete and steel, which usually results in structure damages. The subject of the paper is estimation of influence of polymer dispersion additive (styrene-acrylic co-polymer and styrene-butadiene latex) onto durability of concrete subjected to action of different types of light liquids. The influence of polymer dispersion additive was confronted with the action of silica fume usually applied for sealing the structure of concrete. In the paper there are presented tests results for different types of light liquids onto such cement-polymer concrete properties as: strength, penetration depth of light liquids into material structure.

Liquid Penetration Depth and Strength of Concretes Modified with Polymer Admixtures Under the Action of Crude-Oil Products

“…Both polymer-modified concretes indicated slightly lower strengths: 53.5 MPa for concrete PC1 and 55.5 MPa for concrete PC2. All concretes were designed and executed with the same w/c ratio; however, modification of cement composite structures with polymers may cause a slight (up to a few percent) reduction in the compressive strength because of the difficult access of water to cement grains [22,23]. This decrease was less than 14% for PC1 concrete and about 10% for PC2 concrete in relation to the control concrete.…”

“…In research, a higher reduction in concrete strength subjected to the action of liquids with lower viscosity has also been observed [17,18,19]. During conducted tests, the influence of mineral oil on the long-term strength of normal-strength and high-strength concretes has been documented [15,20,21,22]. After 280 days, the compressive strength of concrete stored in oil was about 17% lower (12% for high-strength concrete) than the control concrete (matured in water).…”