ABSTRACT

Research has been done to obtain a Porous Concrete (PC) mixture capable of bearing heavy traffic loads while maintaining sufficient air voids (AV) to percolate water into the ground. This research aims to establish several design parameters in PC mixture dosage in order to generate a multi-criteria methodology that helps to obtain a final product, which is beneficial for both citizens and environment. Compression strength, indirect tensile strength, permeability, skid resistance, and stiffness modulus were evaluated, employing different aggregate gradations (AG), water to cement (w/c) and sand to cement (s/c) ratios, designing with the Porous Concrete that the right addition of sand and AG can improve mechanical capacity Design (PCD) methodology. Results demonstrated by around 10% and permeability rates by around 25%. This investigation provides a starting point for the use of additives in PC mixtures that helps to bring multifunctional properties such as heat island mitigation, air purification (photo-catalysis) and noise reduction, among others.

摘要

已经进行了研究以获得一种多孔混凝土 (PC) 混合物，该混合物能够承受繁重的交通负载，同时保持足够的气隙 (AV) 使水渗入地下。本研究旨在确定 PC 混合物剂量的几个设计参数，以生成有助于获得最终产品的多标准方法，这对公民和环境都有好处。采用不同的骨料级配 (AG)、水与水泥 (w/c) 和砂与水泥 (s/c) 的比例，采用多孔混凝土进行设计，评估了抗压强度、间接拉伸强度、渗透性、防滑性和刚度模量正确添加沙子和 AG 可以提高机械能力设计 (PCD) 方法。结果表明大约 10% 和渗透率大约 25%。