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首页> 外文会议>2nd International RILEM Symposium on Adhesion between Polymers and Concrete, 2nd, Sep 14-17, 1999, Dresden, Germany >PASTE-AGGREGATE ADHESION IN POLYMER-CEMENT POROUS CONCRETE
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PASTE-AGGREGATE ADHESION IN POLYMER-CEMENT POROUS CONCRETE

机译：聚合物水泥多孔混凝土中的糊状粘结

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摘要

PCC porous concrete is a polymer modified cement concrete used as top layer on highway roads. Due to the large accessible porosity, porous concrete has good drainage properties and noise reducing capacities. The properties of porous concrete are mainly depending on the porosity (20 to 25 %), on the continuous polymer-cement co-matrix and on the adhesion between aggregate and mortar. A test program is set up to reveal the influence of polymer addition (variation of polymer-cement ratio) at different types of curing on the strength and durability of porous concrete. Therefore the properties of the bulk mortar as well as the adhesion strength between mortar and aggregate are determined with adapted test methods. This paper discusses the results of the tests and reveals the influence of the polymer-cement ratio and of the curing method on the properties of the mortar and of the aggregate-mortar composite. The results indicate that the flexural strength of the mortar as well as the adhesion strength between the mortar and the aggregate increase with increasing polymer-cement ratio. The compressive strength of the mortar is less influenced, although a retarding effect on cement hydration is notified. To explain the results, the mechanism of the film formation and the combined structure polymer film-cement hydrate are examined.
机译：PCC多孔混凝土是一种聚合物改性的水泥混凝土，用作高速公路的顶层。由于孔隙率大，多孔混凝土具有良好的排水性能和降噪能力。多孔混凝土的性能主要取决于孔隙率（20％至25％），连续聚合物-水泥共基质以及集料与砂浆之间的粘合力。建立了一个测试程序，以揭示不同固化类型下聚合物添加量（聚合物-水泥比的变化）对多孔混凝土强度和耐久性的影响。因此，散装砂浆的性能以及砂浆与骨料之间的粘结强度可以通过适当的测试方法来确定。本文讨论了测试结果，并揭示了聚合物-水泥比例和固化方法对砂浆和骨料-砂浆复合材料性能的影响。结果表明，随着聚合物-水泥比的增加，砂浆的挠曲强度以及砂浆与骨料之间的粘结强度增加。砂浆的抗压强度受到的影响较小，尽管已发现对水泥水化的阻滞作用。为了解释结果，检查了成膜机理和聚合物膜-水泥水合物的复合结构。

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