Eco-Friendly Cement
Cement is responsible for approximately 8–10% of global COâ‚‚ emissions, posing a major obstacle to sustainability. At the same time, demolition waste is increasing every day, accelerating environmental degradation. This situation highlights the urgent need to develop innovative and eco-friendly building materials. Producing sustainable alternatives to traditional cement and promoting circular economy practices in the construction sector are crucial steps toward reducing the carbon footprint and preserving natural resources.
Transforming Agricultural Waste into Sustainable Concrete: A Project Proposal
The primary objective of this project is to transform rice husk ash (RHA), an agricultural waste product, into a valuable component for construction materials. By utilizing RHA, we aim to produce eco-friendly, low-carbon footprint, and economical concrete. Here's how we plan to achieve this:
1. Rice Husk Ash (RHA) Production
Collection: Rice husks will be collected from local rice producers.
Controlled Incineration: The husks will be incinerated under controlled temperatures (approximately 500–700°C) to yield ash with a high silica content.
Grinding: The obtained ash will then be ground to a specific micron size, making it ready for use.
2. Application in Cement Mixtures
Cement Replacement: RHA will replace a certain percentage (e.g., 10–20%) of traditional cement, serving as an alternative binding material.
Concrete Composition: The mixture will also include sand, gravel, water, and, if necessary, admixtures.
Curing: Prepared concrete samples will be poured into molds and subjected to a curing process.
Expected Contributions and Goals
Waste Reduction: Reducing the amount of agricultural waste through recycling.
COâ‚‚ Emission Reduction: Decreasing COâ‚‚ emissions originating from cement production.
Economic Solution: Providing an economical solution by utilizing local resources.
Here are the technical specifications and calculations for cement project:
For the production of 1 cubic meter of concrete, the average traditional material proportions are as follows:
Material Quantity (kg)
Cement 300–350 kg
Sand (Fine Aggregate) 650–750 kg
Gravel (Coarse Aggregate) 1000–1200 kg
Water 150–180 kg
RHA (Rice Husk Ash) Replacement Ratio
RHA can be used to replace 10–25% of the cement in the mixture. The most commonly used ratio, offering optimal durability and workability, is 15% RHA.
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