INNOVATIVE AND CLIMATE‑RESILIENT CONSTRUCTION MATERIALS FOR THE REPUBLIC OF KARAKALPAKSTAN: EVIDENCE FROM CEMENT‑SECTOR STATISTICS AND DURABILITY REQUIREMENTS IN SALINE, HOT CONDITIONS

Abstract

Karakalpakstan’s construction sector operates under a distinctive combination of stresses: hot and dry summers, saline soils and groundwater conditions, and repeated exposure to dust–salt aerosols from the Aral Sea basin. These factors accelerate deterioration of conventional cement-based materials through moisture–salt cycling, sulfate attack, and cracking driven by thermal gradients. At the same time, Uzbekistan’s cement output has expanded rapidly, implying both rising material demand and an opportunity to steer product development toward more durable and lower‑carbon binders. This study combines national cement‑sector statistics, official data on construction activity, and peer‑reviewed durability and decarbonization literature to propose implementable innovation directions for Karakalpakstan. The results show strong national growth in cement production between 2023–2025 (January–July), while Karakalpakstan accounts for a measurable share of national construction works. Based on the evidence, the paper prioritizes blended cements and low‑permeability concrete designs tailored to saline environments, including limestone–calcined clay cement (LC3), supplementary cementitious materials (SCMs), and enhanced quality assurance/quality control (QA/QC) systems. A practical municipal procurement and testing package is proposed to reduce lifecycle costs and increase service life in infrastructure and buildings.