Growing Through Dissolution: What Building Materials Can Learn from Dolomite Crystals
Building material specifications usually begin with ingredients, mixing ratios and final properties. But what if the order of events during manufacture matters as much as the ingredients themselves? What if a material needs a stage that removes some of what has formed so that the remainder can continue to grow?
Research into dolomite formation brings this question into architectural discussion. Its immediate subject is crystal growth. Its potential architectural relevance concerns how mineral manufacturing processes are designed, evaluated and specified.
When Early Growth Obstructs Further Growth
A study published by Joonsoo Kim and colleagues in 2023 investigated the difficulty of growing dolomite under near-ambient conditions despite its abundance in the geological record. Atomistic simulations suggested that disorder in the distribution of calcium and magnesium at the surface can generate strains that inhibit further crystal growth.
Under the proposed mechanism, limited periods of dissolution preferentially remove disordered regions, allowing more ordered reprecipitation. The researchers reported observing growth after dissolution pulses using liquid-cell transmission electron microscopy.
This finding concerns a particular crystalline system and experimental conditions. It does not establish that dissolving part of a completed building material improves its performance, or that natural wetting and drying cycles perform the same function.
The interpretation is also contested. Carlos M. Pina, Carlos Pimentel and Ángel Crespo published a critical comment in 2024. The study is therefore used here as a starting point for a research question, without treating the problem of dolomite formation as settled.
From Material Recipe to Manufacturing Sequence
The proposed architectural contribution is to treat the sequence of processing conditions as an independent design variable.
Consider two samples with the same initial composition. One is processed under constant conditions, while the other passes through alternating stages of precipitation and limited dissolution. The question concerns more than which gains mass faster: what structure ultimately forms, and how does it relate to porosity, cohesion and adhesion to a substrate?
We propose calling this variable the “Mineral Processing Sequence”: the order and duration of chemical conditions during material formation. The term is a working description for this inquiry, without claiming a new principle in materials science or worldwide priority for the expression.
From this perspective, “the same ingredients” is insufficient as a basis for comparison. The processing history of each sample must also be known.
An Initial Application: A Mineral Layer on a Substrate
Testing could begin with a thin mineral layer on an inert substrate in the laboratory, before considering a complete architectural product. This choice limits experimental complexity and allows the relationship between layer growth and adhesion to be examined.
Three groups would be compared:
- Continuous processing under constant precipitation conditions.
- Processing interrupted by periods in an equilibrated solution, separating the effect of pausing from the effect of dissolution.
- Processing that alternates between precipitation and limited dissolution conditions.
Temperature, substrate and solution composition would be controlled, while material, water and energy consumption would be recorded. Comparisons would be made first at equal processing times and then at similar final thicknesses, so that performance differences are not attributed solely to different quantities of material.
Before assessing product quality, the identity and degree of ordering of the resulting mineral phase must be established. Increased thickness or the appearance of crystals in images does not, by itself, demonstrate formation of the intended material.
What Would Count as Success?
Cyclic processing might produce a more ordered layer with weaker adhesion. It could improve a microscopic property without delivering a measurable benefit at product scale. Structure and performance therefore need to be evaluated together.
The proposed testing programme would include phase identification by diffraction, examination of microstructure, and measurements of thickness, porosity and adhesion. Durability tests relevant to the potential application would follow.
The testable hypothesis is that limited, selective removal during formation may improve certain properties compared with continuous processing. If cycling increases material loss or weakens cohesion, it has failed under the tested conditions.
Improved crystalline order alone cannot establish improved mechanical performance. Cracks, pores, grain boundaries and the substrate may also influence the final result.
Where Does Industrial Feasibility Begin?
Even a successful experiment leaves the factory with questions that differ from those of the laboratory.
The process requires an accounting of what dissolves, what can be recovered and how solutions change after repeated use. Production time, control requirements and waste treatment must also be measured. A precise chemical cycle may be feasible in a small vessel yet costly or unstable at larger production scales.
Low-temperature manufacturing is therefore insufficient evidence of a lower environmental impact. A comparison should include chemicals, water, energy, waste and service life, using a common functional basis: two products performing the same task to the required standard.
Dissolution has no inherent value as a manufacturing step. Its potential value depends on the performance it adds relative to the resources consumed to achieve it.
Time as Part of the Specification
If experiments establish that processing sequence changes performance, specifications for some future materials may need to describe that sequence alongside composition and final properties.
This could include operating ranges, stage durations, permitted material losses and mineral-phase verification results. Such information would form part of quality control and the ability to reproduce performance across manufacturing batches.
Architects would not need to manage chemical reactions themselves. They would, however, need to know whether a manufacturing change alters the product they approved, even when its trade name and nominal composition remain unchanged.
✦ ArchUp Editorial Insight
The value of this research direction lies in broadening what counts as material design. Designers select a material, its form and its application. Research can add a question about the history that produced its properties.
This could support an approach in which materials are evaluated through the relationship between composition, processing sequence and performance. It requires a connected chain of evidence: establish what actually formed, measure its benefit, and demonstrate that it can be manufactured consistently.
Dolomite leaves architecture with a specific question: can a controlled removal stage during manufacture produce a better-performing material? The answer begins with a sample, a control and a measurement, before reaching a façade, a specification or a claim of sustainability.
References
- Kim, Joonsoo; Kimura, Yuki; Puchala, Brian; Yamazaki, Tomoya; Becker, Udo; and Sun, Wenhao. “Dissolution Enables Dolomite Crystal Growth near Ambient Conditions.” Science, 2023.
- Pina, Carlos M.; Pimentel, Carlos; and Crespo, Ángel. “Comment on the Article Dissolution Enables Dolomite Crystal Growth near Ambient Conditions by Kim et al. 2023.” Critical comment, 2024.
