Exposed Aggregate Finish Concrete Mix Design

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Solution Overview

Problem

Conventional concrete mixtures for exposed aggregate finishes lack visual variation due to consistent aggregate sources and ratios, resulting in uniform appearances despite differences in grain structure and color.

Innovation Solution

A process that allows selection of varying ratios of local and import fine and coarse aggregates, combined with optional colored glass additives, to create a spectrum of concrete mixes for diverse exposed aggregate finishes.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional concrete mixtures use consistent aggregate sources and ratios, then manufacturing process is simple and reliable, but visual variation and aesthetic appeal are insufficient

Engineering Contradiction:

Improvevisual variationVSAvoidaggregate selection process

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The aggregate selection process is segmented into multiple independent categories (coarse aggregate type, fine aggregate type, colored aggregate option, aggregate size) that can be independently selected and combined. This allows for systematic generation of visual variations while maintaining process organization and manageability.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention changes multiple parameters simultaneously including aggregate type (coarse/fine), aggregate material composition (gravel/sand/stone), aggregate size (6mm/10mm/16mm), and colored aggregate inclusion (0-10mm diameter stones). By varying these parameters, diverse visual outcomes are achieved while using standard concrete manufacturing processes.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If multiple aggregate types and ratios are used to create visual variations, then aesthetic appeal improves, but manufacturing complexity and process time increase

Engineering Contradiction:

Improveexposed aggregate finish varietyVSAvoiddaily production volume

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

Aggregate selections for multiple concrete batches are predetermined and prepared in advance according to the desired exposed aggregate finish variations. This preliminary planning allows for efficient execution during manufacturing without requiring complex real-time adjustments, thereby maintaining productivity while achieving design variety.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The same basic concrete manufacturing process and equipment are used to produce all aggregate mixtures. The process is universal and can handle different aggregate types and ratios without requiring specialized equipment for each variation, thus maintaining high productivity across diverse product lines.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Productivity

If standard concrete mixtures are used, then production efficiency is high, but the exposed aggregate finish lacks diversity and visual interest

Engineering Contradiction:

Improveconcrete production efficiencyVSAvoidfinish variation spectrum

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

Multiple parameters of the concrete mixture are varied including coarse aggregate proportion (40-60%), fine aggregate proportion (40-60%), colored aggregate content (0-10% by volume), and aggregate size (6mm, 10mm, or 16mm). These parameter changes create a spectrum of finish variations while using standard manufacturing processes that maintain high productivity.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The concrete mixture is formulated as a composite material combining different aggregate types (coarse and fine), colored aggregates (natural or recycled glass, stone, or ceramic), and cementitious binder. This composite approach allows for diverse visual properties while maintaining the structural integrity and production efficiency of conventional concrete.

Inventive Principle:

Principle #40Composite materials

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables daily production of unique exposed aggregate finishes by varying aggregate ratios, enhancing visual appeal and allowing for a broader range of concrete mix variations.

Implementation Method 1

The concrete solidifies and hardens through a chemical process called hydration. The water reacts with the cement, which bonds the other components together

Methodology Applied

Scientific EffectHydration: Mineral Hydration

Data Source

PatentUS20220340496A1Process for producing variants of concrete exposed aggregate finish

Publication Date: 2022.10.27 MARTIN RALPH RICHARD

AI summary

The application generally relates to a process for producing variants of concrete exposed aggregate finish (EAF) based on selected ratios from local and import, fine and coarse aggregate components. In particular, the process allows a user to select the desired appearance of the end result exposed aggregate finish, by selecting a ratio of local vs import fine aggregate and/or a ratio of local vs import coarse aggregate. Thus, the process allows for the ability to create a spectrum of daily variations of overall concrete mixes in order to achieve daily end result exposed aggregate finish.