Construction and Building Materials· 2026Q1
Balancing thermal insulation and mechanical performance in aerogel insulating mortar through synergistic cement-HPMC regulation
- 0citations
- Q1SCImago
- 2026year
Short summary
Optimized aerogel insulating mortar (AIM) with 5.293g cement and 8.0g HPMC achieves a dry density of 211.8 kg/m³, thermal conductivity of 60.2 mW/(m·K), and compressive strength of ~0.50 MPa, further reduced to 48.56 mW/(m·K) after pathway regulation.
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Key points
- Optimized AIM formulation (5.293 g cement, 8.0 g HPMC) achieved a dry density of 211.8 kg/m³.
- The optimized AIM demonstrated a thermal conductivity of 60.2 mW/(m·K) and compressive strength of ~0.50 MPa.
- Curing/drying pathway regulation further reduced thermal conductivity to 48.56 mW/(m·K).
- Microstructural analysis showed pore redistribution and interfacial modification reduced solid-phase heat transfer while preserving mechanical integrity.
AI-generated from the title and abstract; the full text is not read.
Abstract
This study develops a synergistically regulated aerogel insulating mortar (AIM) by integrating aerogel-modified expanded perlite, hollow glass microspheres, and HPMC. Response surface methodology (RSM) quantifies the coupled effects of cement content and HPMC dosage on dry density, thermal conductivity, and compressive strength. The optimized formulation (5.293 g cement, 8.0 g HPMC) achieves a dry density of 211.8 kg/m 3 , thermal conductivity of 60.2 mW/(m·K), and compressive strength of ~0.50 MPa. Subsequent curing/drying pathway regulation further reduces thermal conductivity to 48.56 mW/(m·K). Microstructural analyses reveal that multiscale pore redistribution and interfacial modification jointly weaken solid-phase heat transfer while maintaining a functional load-bearing skeleton. This work provides a quantitative formulation-processing-microstructure framework for designing low-density AIM with balanced thermal-mechanical performance for energy-efficient building envelopes.
The authors' abstract, as published at the source. Construction and Building Materials, 2026 · DOI ↗
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Field: Spectroscopy
SpectroscopyChemistry