Campus Units

Civil, Construction and Environmental Engineering, Center for Nondestructive Evaluation (CNDE)

Document Type

Article

Publication Version

Accepted Manuscript

Publication Date

8-17-2019

Journal or Book Title

Journal of Cleaner Production

First Page

118057

DOI

10.1016/j.jclepro.2019.118057

Abstract

Concrete Grinding Residue (CGR) is a slurry waste generated from diamond grinding of fresh concrete pavement surfaces. Fresh CGRs are mostly disposed along the roadside which can impact the chemistry of soils and vegetation growth along the roadways. To understand the effects of CGR on soil chemical properties, sixteen controlled experimental plots (2-m by 2-m for each) classified as sandy loam or clayey sand were established and applied with four different CGR rates: 0, 2.24, 4.48, and 8.96 kg m−2. Soil samples were collected at various times, one month, six months, and twelve months, after CGR application to measure pH, electrical conductivity (EC), alkalinity, metal concentration, water-extracted cation exchange capacity (WE-CEC), exchangeable sodium percentage (ESP), and percentage base saturation (PBS). The results of statistical analyses indicated that the CGR applications impacted the chemical properties of soil, and the impact of CGR became greater with an increase in the CGR application rate. In addition, the CGR impact decreased with soil depth. For the CGR application rate of 8.96 kg m−2, soil pH, alkalinity, EC, WE-CEC and ESP increased by 24%, 392%, 219%, 219% and 106%, respectively, while PBS decreased by 16%. CGR also increased concentrations of Ca, K, Mg, Na, Al, and Fe in soil by at least 50%. However, the changes in soil properties such as pH and PBS did not persist twelve months after the CGR applications. The primary findings indicate that, although CGR can change some soil chemical properties significantly, changes may not have long term negative impacts on the soil and plant environment.

Research Focus Area

Construction Engineering and Management

Comments

This is a manuscript of an article published as Yang, Bo, Bora Cetin, Yang Zhang, Chenyi Luo, Halil Ceylan, Robert Horton, Sunghwan Kim, and Masrur Mahedi. "Effects of concrete grinding residue (CGR) on selected sandy loam properties." Journal of Cleaner Production (2019): 118057. DOI: 10.1016/j.jclepro.2019.118057. Posted with permission.

Creative Commons License

Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.

Copyright Owner

Elsevier Ltd.

Language

en

File Format

application/pdf

Available for download on Tuesday, August 17, 2021

Published Version

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