Refractory Materials Testing

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Monolithic Refractory Material Testing

The large-scale development of unshaped refractories in China began in the 1970s and 1980s. By the early 2000s, with the large-scale expansion of basic industries such as steel, cement, and non-ferrous metals, as well as increased demand for large-scale, continuous kiln production, unshaped refractories were widely used in the steel, non-ferrous, building materials, and power industries due to their advantages of high construction efficiency, strong applicability, and on-site formability. In recent years, with the advancement of smelting technology and the increasing complexity of kiln structures, products such as high-performance castables, self-flowing castables, gunning materials, and refractory patching materials have rapidly promoted the industry into a new growth phase. Since 2018, the industry's annual growth rate has consistently remained at no less than 18%, making China the world's largest producer and consumer of unshaped refractories.

We have a professional application testing, R&D, and service team, offering targeted material performance optimization and construction suitability evaluations to help your product demonstrate superior performance and stand out for its technical features in high-temperature industrial applications.

Testing Products

Refractory Mortars

Refractory Castables

Refractory Plastic Materials

Testing Items

Bulk Density (Geometric Bulk Density)

Cold Crushing Strength (CCS)

Cold Modulus of Rupture (Cold MOR)

Abrasion Resistance

Alkali Resistance

Plasticity Index

Thermal Conductivity

Bulk Density (Loose / As-Delivered)

Moisture Content

Consistency (Flowability)

Setting Time (Working Time)

Bonding Strength (Modulus of Rupture in Bonding)

Particle Size Distribution (Grading)

Linear Expansion Rate (Thermal Expansion)

Permanent Linear Change on Heating / Reheat Change

Ramming (Rammed) Density

Resistance to Electrolyte Penetration

Chemical Composition

Testing Standards

Refractory Mortars (High-alumina refractory mortars, fireclay refractory mortars, refractory buffer mortars, silica refractory mortars):

GB/T 2994-2021, GB/T 14982-2008, YB/T 150-2016, YB/T 384-2023

Refractory Castables (Alkali-resistant castables, steel fiber-reinforced castables, high-strength castables, blast furnace trough castables, self-flowing castables, unshaped refractories for carbon baking furnaces, ladle gunning materials):

JC/T 708-2013(2017), JC/T 499-2013(2017), JC/T 498-2013(2017), YB/T 4126-2023, YB/T 4197-2022, YB/T 4320-2012(2017), YB/T 4671-2018

Refractory Plastic Materials (Waterless taphole mixes for blast furnaces, silicon carbide-carbon ramming mixes for blast furnaces, fireclay and high-alumina refractory plastic materials):

YB/T 4196-2018, YB/T 4349-2013, YB/T 5115-2014(2017)

Service Advantages

The National Center for Quality Supervision and Testing of Refractory Materials of Building Materials Industry was established in 1989, and the National Center for Quality Inspection and Testing of Refractory Materials (Beijing) was established in 2018, focusing on unshaped refractory material performance testing for over 30 years.

The center is a domestic, authoritative, professional testing institution for refractory and thermal insulation materials, capable of comprehensive testing for refractories and thermal insulations used in high-temperature industries such as cement, glass, steel, non-ferrous metals, petrochemicals, power generation, and waste incineration.

The center has extensive experience in formulating and revising refractory product and method standards, benchmarking refractory product quality, controlling production quality, analyzing and evaluating service life damage, and resolving quality disputes.

Lead editor of multiple unshaped refractory product standards, including JC/T 2383-2016 and JC/T 2382-2016.

The center covers an area of over 1,100 square meters, equipped with advanced testing instruments, of which approximately 60% are imported, making it one of the most influential national refractory material quality inspection centers in China.