Nonrefractory mortars and concretes
Prepared binders for foundry molds or cores; chemical products and preparations of the chemical or allied industries (including those consisting of mixtures of natural products), not elsewhere specified or included: > Nonrefractory mortars and concretes
Duty Rate (from China)
Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter
Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
Subheadings
Products classified under HTS 3824.50.00
Portland Cement-Based Nonrefractory Mortar
A pre-mixed mortar containing Portland cement, sand, and water-retaining agents designed for masonry and bricklaying applications. It sets through hydration without requiring high-temperature firing, distinguishing it from refractory types. Classified under HTS 3824.50.00 as a nonrefractory mortar preparation for construction use.
Polymer-Modified Tile Adhesive Mortar
Ready-to-use mortar with cement, fine sands, and polymer additives for bonding ceramic tiles to substrates. The polymers enhance flexibility and adhesion without refractory properties. Falls under HTS 3824.50.00 as a specialized nonrefractory mortar for flooring and wall installations.
Ready-Mix Nonrefractory Concrete for Structural Use
Pre-proportioned dry-mix concrete with cement, aggregates, and admixtures for pouring foundations and slabs. Nonrefractory by design for ambient curing in general construction. HTS 3824.50.00 covers this as prepared nonrefractory concrete not for high-heat environments.
Grout Mortar for Tile Joints
Cementitious grout powder mixed with water for filling joints between tiles, containing anti-fungal agents and color pigments. Nonrefractory for standard indoor/outdoor use. Under HTS 3824.50.00 as a prepared nonrefractory mortar for finishing applications.
Precast Concrete Repair Mortar
Fast-setting mortar with micro-silica and fibers for patching cracks in precast concrete elements. Designed for structural repairs without refractory heat resistance. HTS 3824.50.00 includes such specialized nonrefractory repair concretes.
Cementitious Floor Screed Mortar
Self-leveling mortar blend of cement, gypsum, and polymers for creating smooth floor underlays. Nonrefractory for standard building floors. Classified in HTS 3824.50.00 as prepared nonrefractory mortar for leveling applications.
Masonry Pointing Mortar
Lime-cement mortar pre-mix for repointing brick and stone joints, with plasticizers for workability. Standard nonrefractory for historic restoration. HTS 3824.50.00 covers these traditional nonrefractory mortar preparations.
High-Strength Nonrefractory Concrete Mix
Dry powder concrete achieving 10,000 PSI strength with silica fume and superplasticizers for bridges and high-load structures. Nonrefractory for ambient conditions. Under HTS 3824.50.00 as advanced prepared nonrefractory concrete.
Waterproofing Cement Mortar
Polymer-cement mortar with crystalline waterproofing agents for basements and pools. Seals pores upon hydration, nonrefractory. HTS 3824.50.00 for such protective nonrefractory mortars.
Dry-Pack Concrete Repair Mortar
Low-slump mortar for hand-packing voids in concrete structures, with minimal water for shrinkage control. Nonrefractory repair product. Classified HTS 3824.50.00 as nonrefractory concrete preparation.