Topic
Pervious concrete
About: Pervious concrete is a research topic. Over the lifetime, 2920 publications have been published within this topic receiving 27720 citations. The topic is also known as: porous concrete & permeable concrete.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this paper, a study to achieve high-strength, high porosity and permeability pervious concrete pavement was carried out, where a mix proportion providing the optimal combination of strength and porosity was chosen, and polymer superplasticizers were added to examine their effect on the strength and Porosity.
Abstract: A study to achieve high-strength, high porosity and permeability pervious concrete pavement was carried out. Mix proportions in terms of cement content, coarse aggregate-cement ratio (CA/C) and water-cement (W/C) ratio were varied. A mix proportion providing the optimal combination of strength and porosity was chosen, and polymer superplasticizers were added to examine their effect on the strength and porosity. Results showed that a water-cement ratio of 0.2 resulted in a dry and brittle mix that led to compressive strength less than 15MPa but a high permeability rate of approximately 20mm/s. A mix with w/c ratio of 0.3 and CA/C ratio of 4.25 resulted in compressive strength of 13.9MPa, flexural strength of 3MPa and high porosity of more than 20%. The use of high cement content of 495kg/m3 in the mix resulted in high compressive strengths of 51.8MPa, flexural strength of more than 4MPa, however permeability was reduced to approximately 1mm/s.
24 citations
TL;DR: In this article, the development of strength and permeability of ordinary Portland cement (OPC) and ground granulated blast furnace slag (GGBFS)-modified concretes which were cured in a simulated arid climate were compared.
Abstract: Problems are frequently encountered in producing good-quality concrete in hot climates. Inadequate curing results in early cracking or porous and permeable concrete, or both; these effects, in turn, make structures prone to reinforcement corrosion and other processes of degradation. This research compares the development of strength and permeability of ordinary Portland cement (OPC) and ground granulated blast furnace slag (GGBFS)-modified concretes which were cured in a simulated arid climate. This was achieved with an environmental room in which temperature and humidity were cycled to imitate a typical Algerian Sahara climate. Four curing regimes were investigated to encompass the range of practical methods encountered on site. Specimens were placed in the hot environment immediately after casting and conditioned for up to 28 days. The strength of the GGBFS concretes was higher than that of the OPC control concrete at all test ages (7, 14 and 28 days) when good curing was provided. Partial cement replacement with GGBFS therefore offers the potential to produce stronger and more durable concrete in hot climates. The disadvantage of GGBFS concretes is that they proved to be more sensitive to poor curing than OPC concrete. In this case, both their strength and permeability, and hence their durability, were seriously impaired. Therefore, special care must be taken when using this type of concrete, especially on site, where the working conditions and the application of curing are not as easy to control as in the laboratory.
24 citations
TL;DR: In this article, the authors investigated the multi-modified effects of different types of admixtures based on optimum design of gradation and cement-aggregate ratio (C/A), and found that adding multiple adhesion mixtures (single or multiple) was in general more effective than increasing C/A or the content of fine aggregate.
24 citations
TL;DR: Results showed that PC with CFA and FSD as additives in PC gained enough strength to be considered for field application, and in-situ infiltration and strength results showed that the pavement conformed to the typical values for a functional PC pavement.
23 citations