Flow-Enhancing Cement Additives for Low-Temperature Storage
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Solution Overview
Problem
Existing additives for improving the flow properties of cementitious and non-cementitious materials often have high freezing points, leading to congestion and the need for climate-controlled storage, which is costly and impractical in many situations.
Innovation Solution
A flow enhancing additive comprising a particulate solid adsorbent material, a flow inducing chemical, ethylene glycol, and water, which lowers the freezing point of the additive, allowing it to remain usable in colder temperatures and eliminating the need for climate-controlled storage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If known additives are used to improve flow properties, then flow properties are improved, but the additives congloate and freeze at relatively high temperatures (60°F or 55°F)
Solution Approach 1:
The patent changes the chemical composition parameters of the additive by incorporating specific compounds (polymer, alcohol, carboxylic acid, or ester) in defined proportions to lower the freezing point below 32°F while maintaining flow enhancement properties
Solution Approach 2:
The invention creates a composite additive system combining multiple components (particulate solid adsorbent material, flow inducing chemical, polymer, alcohol, carboxylic acid, or ester) where each component contributes specific properties to achieve both low freezing point and effective flow improvement
2Ease of operation
If additives with low freezing points are used, then storage and transportation without climate control is enabled, but the additives may still congloate at temperatures as high as 60°F
Solution Approach 1:
The patent adjusts multiple compositional parameters simultaneously - using specific polymer molecular weights, alcohol concentrations (5-50% by weight), and carboxylic acid/ester ratios to achieve both low freezing point and prevention of conglomeration at elevated temperatures
Solution Approach 2:
The patent introduces intermediary substances (polymer, alcohol, carboxylic acid, or ester) that act as mediators between the flow inducing chemical and the particulate solid adsorbent material, preventing direct conglomeration while maintaining flow enhancement
3Reliability
If additives are dry-blended with cementitious materials before packing, then flow properties are improved, but the additives must be stored in climate-controlled facilities to prevent freezing
Solution Approach 1:
The patent fundamentally changes the temperature parameter threshold by formulating additives with freezing points below 32°F, allowing storage in ordinary facilities without climate control while maintaining effectiveness during transportation and storage periods
Solution Approach 2:
The invention creates a disposable additive formulation that is inexpensive to produce and store, eliminating the need for expensive climate-controlled storage facilities while providing long-term flow enhancement protection
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 additive effectively improves the flow properties of cementitious and non-cementitious materials, preventing congestion and enabling storage and transportation without freezing, thus reducing costs and logistical challenges.
Implementation Method 1
an additive comprising a particulate solid adsorbent material having a flow inducing chemical adsorbed thereon
Implementation Method 2
A flow enhancing additive comprising a particulate solid adsorbent material, a flow inducing chemical, ethylene glycol, and water, which lowers the freezing point of the additive
Data Source
AI summary
A dry, free-flowing cement composition that comprises dry cement particles and flow inducing particulates that comprise solid adsorbent particulates having adsorbed thereon a flow inducing chemical, ethylene glycol, and water. The water is present in an amount from 5% to 30.3% by weight of the solid adsorbent particulates, the ethylene glycol is present in an amount from 3.25 to 20% by weight of the solid adsorbent particulates, and the flow inducing particulate is present in an amount from 0.005% to 5% by weight of the cement. The dry, free-flowing cement composition is free-flowing at temperatures at least as low as 10° F.