Green Pervious Concrete Containing Diatomaceous Earth as Supplementary Cementitous Materials for Pavement Applications

Abstract

Portland cement porous concrete (PCPC) has received immense interest recently due to its environmental aids. Its porous structure helps to reduce the water runoff amount while improving the recharge of groundwater. Earlier studies have concentrated on illustrating and knowing the functional as well as structural properties of PCPC. However, very few studies are available on PCPC in combination with natural silica sources as supplementary cementitious materials (SCMs). Most SCMs are by-products of industrial manufacturing processes and cause some environmental concerns, but with their pozzolanic effect, they could be utilized as partial substitute materials for ordinary Portland cement (OPC) to enhance the strength as well as durability performance. The aim of this study is to evaluate the effects of diatomaceous earth (DE) as a supplementary cementitious material for partial substitution of OPC for Portland cement porous concrete application. Compression strength, split tensile strength, and flexural strength tests were performed to determine the effect of partial replacement. To investigate the impact of test variables, basic tests, including void content and water permeability, were also performed. Compared to the control concrete, the results show that a 15% replacement of cement with DE significantly increased the compressive strength (by 53%) while also providing adequate porosity and better water permeability. Statistical analysis (ANOVA) and regression analysis showed that there is a significant (p < 0.05) growth within the physical characteristics of concrete upon the replacement of cement by 15% DE. Collectively, the replacement of cement with DE could not only improve the concrete strength but also reduce the consumption of cement, thereby lessening the cost of construction as well as indirectly reducing the carbon footprint.

Influence of the Addition of Recycled Aggregates and Polymer Fibers on the Properties of Pervious Concrete

“…The storage of massive quantities of waste rubber tires or construction materials coming from demolition activities, especially in urban areas, is one of the global largest sustainability challenges and environmental concerns [8][9][10][11][12]. Another issue is the depletion of natural resources for aggregates used in concrete manufacturing, thus even partial substitution of natural components in concrete is worth the effort.…”

Performance Analysis of Ferronickel Slag-Ordinary Portland Cement Pervious Concrete

“…In the investigation conducted by Nazeer et al [9], the substitution of standard Portland cement with materials such as fly ash and Silica Fume was scrutinized for its effects on the structural integrity, endurance, and microscopic characteristics of pervious concrete. The effects of substituting a portion of ordinary Portland cement (OPC) with diatomaceous earth for porous concrete applications were investigated by Alex et al [10], with a focus on assessing its impact on various strength parameters. Gao et al [11] investigated the practicality of incorporating ceramsite into pervious concrete mixtures, highlighting its advantages for constructing infrastructure that is both more eco-friendly and robust.…”

Non-Cement Building Materials from Volcanic Rock Extraction Waste

“…Enhancing the chemical stability, mechanical properties, and durability of these materials involves optimizing their composition. Notably, these factors do not significantly affect the overall cost of the materials [1][2][3][4][5].…”