01550210

Component

Pervious concrete can potentially provide various environmental benefits as a stormwater best management practice and is usually designed for low volume applications. It has an open void structure which allows water to infiltrate and percolate to the ground, without altering the natural hydrologic cycle. In this way, several problems related to the stormwater management can be mitigated. With regard to pervious concrete pavement performance, permeability is the key functional design property. However, compressive strength, flexural strength and abrasion resistance are also important properties. Currently in North America, the application of General Use Limestone (GUL) cement is becoming more common because it has a lower carbon footprint; CO₂ emissions during the cement production are reduced by approximately 10%. At the same time, nanotechnology applied in cement base materials is receiving increasing attention due to the potential to obtain better long term performance. In this research two types of cement, General Use (GU) and GUL, were used in the pervious concrete to determine if they would impact performance. Secondly, nanomaterials were added to pervious concrete to examine if it could improve strength and durability of pervious concrete pavement without adversely impacting permeability. The control mix includes the application of GU cement, the second mix incorporates GUL cement and the third mix includes the application of 2.5% nanosilica with GUL cement. The test results show that the three different mixes behave statistically the same. However, the third concrete mix with the nanosilica was shown to perform better in terms of abrasion.

This paper was sponsored by TRB committee AFN40 Concrete Materials and Placement Techniques. Alternate title: Evaluation of the Strength and Abrasion Resistance of Pervious Concrete Mixes Using Three Types of Cements (GU, GUL, Nanocement).

01550057

15-3369

English

18p

2015

Transportation Research Board 94th Annual Meeting

Digital/other

Figures; Photos; References; Tables

Abrasion resistance; Cement; Compressive strength; Concrete; Durability; Lime cement; Mix design; Nanostructured materials; Pavement performance; Permeability; Porous pavements

Nanosilica

Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I32: Concrete

Transportation Research Board Annual Meeting 2015 Paper #15-3369

PRP, TRIS, TRB, ATRI

Dec 30 2014 1:08PM