Concrete Curing Moisture Sampling With Dew Point Feedback
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Solution Overview
Problem
Existing methods for monitoring concrete curing are inadequate for real-time adjustments due to their limited relevance to field conditions, lack of transferability from laboratory to field environments, and inability to provide actionable data for atmospheric changes, leading to potential failures such as cracking, spalling, and loss of strength.
Innovation Solution
A humidity monitoring system with a DPT sensor and vacuum pump that collects moisture samples from within the concrete using sampling chambers, providing real-time data for adjusting the curing process to optimize hydration and prevent failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If laboratory methods (ASTM C 156) are used to evaluate concrete curing, then standardized testing is achieved, but the results hold little relevance to field conditions and cannot provide real-time actionable data
Solution Approach 1:
The patent introduces sampling chambers as intermediary devices inserted into concrete slabs to bridge the gap between laboratory measurement and field conditions. These chambers collect moisture samples from within the concrete, enabling laboratory-style analysis to be performed on actual field-cured concrete, thus making the measurement both precise and applicable to real-world scenarios
Solution Approach 2:
The patent replaces traditional passive laboratory curing chambers with an active field-deployable sampling system that includes vacuum pumps, dew point sensors, and controlled sampling chambers. This substitution enables real-time monitoring and control of curing conditions in the field, transforming static laboratory methods into dynamic field-applicable technology
2Reliability
If passive controls (membranes, curing compounds) are used to prevent curing failures, then basic protection is provided, but the effectiveness is subject to atmospheric changes and no real-time adjustment is possible
Solution Approach 1:
The patent implements a feedback control system that continuously monitors moisture content and temperature within the concrete using sampling chambers and dew point sensors. The system provides real-time data on curing conditions, enabling operators to adjust curing practices in response to atmospheric changes and concrete condition, thus maintaining reliability while improving adaptability
Solution Approach 2:
The patent transforms static passive controls into a dynamic active control system. The sampling chambers and monitoring equipment enable real-time detection and adjustment of curing conditions, allowing the system to adapt to changing atmospheric conditions and concrete curing needs, thereby improving both reliability and versatility
3Measurement precision
If multiple chilled mirror hygrometers are positioned at different depths in concrete, then comprehensive temperature and humidity monitoring is achieved, but device complexity and cost increase
Solution Approach 1:
The patent divides the monitoring system into modular sampling chambers that can be independently inserted at different depths and locations within the concrete. Each chamber contains its own sampling and measurement capabilities, allowing comprehensive moisture profile monitoring while maintaining system modularity and reducing overall complexity through standardized components
Solution Approach 2:
The sampling chambers are designed as universal, multi-functional units that can be deployed at various depths and locations to monitor different aspects of curing conditions. This universal design allows a single chamber type to serve multiple monitoring functions, reducing the need for specialized equipment at each depth and simplifying the overall system
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 accurate, real-time monitoring of concrete curing conditions, allowing for timely adjustments to improve the quality and durability of concrete by minimizing atmospheric impacts.
Implementation Method 1
a vacuum pump that draws moisture samples from curing concrete into a sampling tank
Implementation Method 2
a dew point temperature (DPT) sensor in communication with the sampling tank
Data Source
AI summary
Apparatuses, systems, and methods for monitoring the curing of concrete employ a vacuum to draw a moisture sample from concrete (e.g., curing concrete, etc.) into the presence of a single dew point temperature (DPT) sensor. Moisture samples may be selectively drawn into the presence of the DPT sensor from sampling chambers within the concrete at a variety of locations across the concrete and/or from a variety of depths within the concrete. The dew point temperature data may be used to determine the quality of a concrete curing process.