Construction Materials Testing & Analysis Solutions

Cement & Concrete Quality Control

From the quarry to the kiln, maintaining precise control over raw material composition is the key to producing high-performance cement. This section focuses on the critical determination of Carbon, Sulfur, and moisture content in limestone, dolomite, and fly ash.

Whether you are monitoring Loss on Ignition (LOI) to ensure chemical stability or analyzing clinker microstructure for quality assurance, our solutions provide the data needed to optimize fuel usage, reduce rework, and meet strict environmental standards. Build a foundation of consistency with elemental analysis designed for the minerals industry.

Determinação de Carbono e Enxofre em Calcário e Dolomita

This application note outlines total carbon and sulfur determination in limestone and dolomite using the LECO CS844 Series. Induction furnace combustion with dual-range detection ensures accurate purity verification for industrial and construction applications.

Determinação de Enxofre e Carbono em Cimento, Argila, Cinza Volante, Calcário, Solo e Minério

Carbon and sulfur determination is essential for quality control in cement production, soil characterization, and metal recovery processes. Reliable analysis supports process optimization, environmental monitoring, and consistent material performance across raw and finished products.

Perda ao Fogo (Perda na Ignição - LOI) em Resíduos de Combustão

Loss on Ignition (LOI) in combustion residues is a critical quality parameter for cement and related industries. Macro thermogravimetric analysis using the LECO TGA801 enables accurate, representative LOI measurements on heterogeneous samples.

Análise de Clínquer de Cimento

By examining cement clinker microstructure, producers can detect changes in crystal size, shape, and phase distribution that may not be revealed through mechanical or chemical testing alone. The application note details best practices for sample storage, sectioning, mounting, grinding, polishing, etching, and microscopic analysis, along with image-based phase quantification using automated analysis tools. Routine clinker…

Análise de Perda ao Fogo Dividida de Cimento

Loss on Ignition (LOI) and Split Loss testing are critical for evaluating cement quality, water content, and carbonation. Using thermogravimetric analysis, the LECO TGA801 uniquely performs Split LOI measurements at multiple temperatures in a single run, enabling efficient determination of CO₂ content and ensuring cement composition meets quality and safety requirements.

Ensure Quality, Avoid Failures

Structural integrity begins at the microscopic level. For manufacturers and engineers working with rebar, structural beams, and metal building components, verifying material purity is vital for ensuring the safety and longevity of a project. This section focuses on the critical analysis of inclusions and chemical uniformity within steel products. From specialized sample preparation techniques to solving the challenges of analyzing difficult part geometries, our solutions provide the clarity needed to prevent material failure and ensure every batch meets rigorous construction codes.

Análise em Lote de Aços de Baixa Liga, Cr-Mo, de Mecanismo Livre e Aços Austeníticos de Alto Mn

Chemical composition is essential for accurate steel identification and classification, as mechanical properties alone cannot reliably distinguish alloy types. Using the LECO GDS900, producers can determine iron, carbon, alloying elements such as chromium, nickel, manganese, vanadium, and molybdenum, as well as modifiers like sulfur and lead. The glow discharge source minimizes metallurgical history effects, reduces…

Análise em Lote de Aços Resistentes à Corrosão e ao Calor

Stainless steel properties are directly tied to alloying elements such as chromium and nickel, as well as carbon, manganese, molybdenum, and copper. This application note outlines how the GDS900 glow discharge atomic emission spectroscopy provides linear response, minimal spectral interferences, and reduced metallurgical history effects, enabling reliable composition verification for producers and manufacturers. Accurate bulk…

Carbono e Enxofre em Ligas de Ferro, Aço, Níquel e Cobalto

Carbon and sulfur are critical quality metrics that influence hardness, ductility, weldability, wear resistance, and malleability. The application note outlines sample preparation best practices, references applicable ASTM standards, and explains how the CS induction furnace enables fast, accurate analysis to support efficient production and quality control workflows.

Determinação de Hidrogênio em Aço e Ferro

Esta nota de aplicação detalha a determinação precisa do hidrogênio em aço e ferro utilizando o LECO H836EN. O forno de impulso e o sistema de detecção por condutividade térmica proporcionam uma análise precisa de baixos teores de hidrogênio para apoiar o controle de qualidade e prevenir a fragilização, a formação de bolhas e a descamação.

Oxigênio e Nitrogênio em Ligas de Ferro Sólido, Aço, Base Níquel e Base Cobalto

O controle preciso dos níveis de oxigênio e nitrogênio é fundamental para gerenciar a porosidade, inclusões, resistência à corrosão, resistência e o desempenho geral da liga. Esta nota de aplicação descreve a preparação de amostras recomendada, métodos ASTM e ISO aplicáveis, requisitos de hardware, configurações do sistema e desempenho analítico esperado para uma análise rotineira confiável.

Preparação Automática de Corpos de Prova Metalográficos

LECO’s automatic specimen preparation system streamlines metallography by reducing grinding and polishing steps, ensuring reproducible, high-quality surfaces while saving time and consumables. Ideal for steels, cast irons, superalloys, titanium, aluminum, and microcircuit samples.

Impressão de Enxofre

Sulfur printing is a metallographic technique that reveals sulfur distribution in ferrous alloys, highlighting segregated regions and potential hot shortness. This method provides macro-scale insight that complements precise instrumental sulfur analyses.

Revelando a Ferrita Delta em Aços Inoxidáveis Martensíticos

This method describes how to selectively stain delta ferrite in martensitic stainless steels using a 20% NaOH electrolytic etch. The technique improves contrast for accurate quantitative image analysis and volume fraction measurement in alloys such as 17-4 PH.

Técnicas de Seccionamento em Metalografia

Sectioning is the first and critical step in metallographic specimen preparation, reducing large samples to manageable sizes. Correct sectioning prevents damage that could compromise subsequent grinding, polishing, and analysis.

Determinação do ONH em ligas: otimização do tempo de ciclo e do desempenho

O oxigênio, o nitrogênio e o hidrogênio são parâmetros críticos de qualidade no aço e nas ligas à base de níquel e cobalto, influenciando diretamente a resistência, a ductilidade, a porosidade e a fragilização. Conheça os princípios da determinação simultânea de ONH utilizando o LECO ONH836, que emprega um forno de eletrodo de alta potência para liberar e medir rapidamente os gases-alvo. O artigo também descreve as melhores práticas para amostragem e tratamento de amostras…

High-precision Analysis for the Exact Makeup of Coatings

Protection is as important as the structure itself. In this section, we explore high-precision analysis for galvanized, aluminized, and painted surfaces that prevent corrosion and extend the life of building materials. Using Compositional Depth Profiling (CDP), you can visualize the exact chemical makeup of a coating from the surface down to the substrate. Ensure uniform application, verify coating thickness, and maintain the aesthetic and functional standards required for modern architectural finishes and protective barriers.

Análise de Perfil de Profundidade Compsicional de Aço Galvanizado

This document details the compositional depth profile analysis of various galvanized coatings using the LECO GDS950. It explains how to achieve rapid, accurate results for zinc and zinc-alloy coatings following ISO 16962.