Bubble-Containing Hydraulic Composition for Large Bubbles and Low Density

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Existing hydraulic compositions containing cement or gypsum as a hardening agent face challenges in reducing weight while maintaining or increasing bubble size, which affects strength and insulation properties, and there is a need to enhance environmental and cost efficiency.

Innovation Solution

A bubble-containing hydraulic composition using a foaming agent comprising alkyl or alkenyl sulfates with specific ratios of components (A1) and (A2) to create a foam film that balances bubble size and weight reduction, incorporating components (A1) and (A2) in a hydraulic composition to achieve low specific gravity and large bubble size.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of stationary object

If the volume proportion of bubbles is increased to reduce the weight of the hardened product, then the specific gravity is reduced, but the strength decreases due to reduced proportion of hydraulic composition

Engineering Contradiction:
Improveweight of hardened productVSAvoidstrength of hardened product
Core Design Contradiction:
Weight of stationary objectVSStrength

Solution Approach 1:

The invention changes the parameters of the foaming agent by specifying a particular composition of alkyl sulfates (components A1 and A2) with controlled mass ratios. This parameter optimization enables the formation of larger bubbles that provide weight reduction while maintaining structural integrity and strength of the hardened product.

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The invention uses a composite foaming agent system combining two specific alkyl sulfate components (A1 and A2) in defined proportions. This composite approach creates a synergistic effect that produces bubbles with optimal size and stability, resolving the contradiction between weight reduction and strength maintenance.

Inventive Principle:
Principle #40Composite materials

2Strength

If the size of bubbles is made larger to increase strength and improve insulation, then the distance between bubbles increases reducing combination, but the volume proportion of bubbles decreases reducing weight reduction effect

Engineering Contradiction:
Improvestrength of hardened productVSAvoidweight of hardened product
Core Design Contradiction:
StrengthVSWeight of stationary object

Solution Approach 1:

The invention optimizes the parameters of the foaming agent composition to produce bubbles of specific size ranges. By controlling the mass ratio of components A1 and A2, the system generates bubbles that are large enough to improve strength and insulation properties while maintaining sufficient volume proportion for effective weight reduction.

Inventive Principle:
Principle #35Parameter changes

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

The solution results in a hardened product with reduced specific gravity, increased bubble size, improved thermal and acoustic insulation, and reduced drying fuel consumption, while maintaining strength and handling properties.

Implementation Method 1

a foaming agent comprising alkyl or alkenyl sulfates with specific ratios of components (A1) and (A2) to create a foam film that balances bubble size and weight reduction

Methodology Applied
Scientific EffectSurface tension: Surface Tension

Data Source

PatentEP4628466A1Bubble-containing hydraulic composition
Publication Date: 2025.10.08 KAO CORP
  • EP4628466A1 patent drawing
  • EP4628466A1 patent drawing
  • EP4628466A1 patent drawing

AI summary

The present invention provides a bubble-containing hydraulic composition and a method for producing the same that attain a low specific gravity of a hardened product of the bubble-containing hydraulic composition and a large bubble size in the hardened product of the bubble-containing hydraulic composition. A bubble-containing hydraulic composition containing a hydraulic powder, water, and (A) an alkyl or alkenyl sulfate or a salt thereof (hereinafter referred to as component (A)), wherein the composition contains, as component (A), (A1) an alkyl or alkenyl sulfate having an alkyl or alkenyl group with 10 carbons, or a salt thereof (hereinafter referred to as component (A1)), and (A2) an alkyl or alkenyl sulfate having an alkyl or alkenyl group with 12 carbons, or a salt thereof (hereinafter referred to as component (A2)), a total content of components (A1) and (A2) in component (A) is 99 mass% or more, and a mass ratio of a content of component (A1) to a content of component (A2), (A1)/(A2), is 0.2 or more and 2.4 or less.