A reference library of system logic concerned with building stability under constraint
Construction System — Resin-bound Aggregate System
1. System Intent
Problem domain addressed:
The need for durable, permeable, decorative surface finishes where aggregate stability and surface performance are required under moderate service loads.
Type of function introduced:
A performance-led surface system that binds mineral aggregate using resin-based binders, acknowledging increased embodied impact and reduced reversibility relative to mineral-only systems.
1.1 Constraint Inheritance
This system is evaluated against the governing Future Constraints maintained in the Kindlearth reference layer. It explicitly acknowledges water constraint, climatic variability, material availability limits, energy instability, and institutional fragility as operating conditions.
As a Tier 2 system, it accepts bounded departures from full constraint coherence, with those departures made explicit in system intent, boundaries, and exclusions rather than remaining implicit.
2. System Boundary
Included:
- mineral aggregate selected for size and grading
- resin-based binders for aggregate encapsulation
- application to stable substrates
- controlled curing and sealing processes
Explicitly excluded:
- mineral-only binder systems
- sacrificial weathering behaviour
- vapour-open surface performance as a primary goal
- use as a structural or load-bearing layer
3. System Logic (Conceptual)
Inputs:
- prepared substrate
- graded mineral aggregate
- resin binder system
Transformation logic:
- resin binder encapsulates aggregate to create a unified surface layer
- surface performance derives from binder–aggregate cohesion
- durability is prioritised over material reversibility
Outputs:
- stable, continuous aggregate surface
- improved wear resistance and surface cohesion
4. Preconditions
- substrate stability and preparation
- controlled environmental conditions during application
- acceptance of resin-based materials
- maintenance access over system life
5. Testability Statement
Observable properties:
- aggregate retention under service conditions
- surface cohesion and wear resistance
- absence of aggregate loss or binder failure
Evaluation method:
Visual inspection and surface performance observation over time.
Failure condition:
Aggregate loss, binder degradation, or substrate incompatibility.
6. Evidence Status
Status: Contemporary practice reference
Locations:
Observed in modern exterior, landscape, and circulation surface applications where aggregate stability, durability,
and decorative finish are required.
Form:
Manufacturer-supported applications, field observation of in-service surfaces, and contemporary construction practice records.
No claim of low embodied impact, material reversibility, vapour openness, or traditional compatibility is implied.
7. Tier Reference
This system is a Tier 2 EConstruct system, positioned relative to:
- EConstruct Tier 1 mineral render and surface systems
Tier 2 classification reflects explicit trade-offs in:
- embodied impact
- material reversibility
- binder composition
in exchange for aggregate retention, surface cohesion, and durability under service conditions.
8. Version & Change Control
Current version: v1.0
Version change triggers:
- change to system intent
- alteration of boundary inclusions or exclusions
- modification of conceptual system logic
- change in the role or dominance of resin binders
- reclassification of tier status
Formatting, spelling, or clarification changes that do not alter intent, boundary, logic, or tier classification do not constitute a version change.