Overview
Aggregate sand is a granular material derived from natural deposits or industrial crushing of rocks. It serves as a foundational component in construction due to its ability to enhance the mechanical properties of concrete and asphalt. Unlike fine sand used in masonry, aggregate sand typically has a larger particle size (0.25–5 mm) and is categorized into coarse (gravel) and fine (sand) subtypes. Globally, it is regulated by standards such as ASTM C33 (U.S.) and EN 12620 (EU), which define parameters for particle size distribution, durability, and impurities. Sustainable sourcing, including recycled concrete aggregates, is gaining traction in the industry.
Physical and Chemical Properties
Aggregate sand exhibits high compressive strength (100–300 MPa), making it ideal for load-bearing structures. Its density ranges from 1.4 to 1.6 g/cm³, depending on mineral composition (e.g., quartz, limestone). Angular particles provide better interlocking in concrete, while rounded particles improve workability. Chemically, it is inert and resistant to weathering, though reactive aggregates (e.g., containing silica) may cause alkali-silica reactions in concrete. Low water absorption (<2%) is critical to prevent freeze-thaw damage in cold climates.
Main Applications
In concrete production, aggregate sand constitutes 60–75% of the volume, reducing shrinkage and cracking. Coarse aggregates (5–25 mm) are used in structural concrete, while fine aggregates (0.25–5 mm) are preferred for plastering and mortar. Road construction relies on crushed stone aggregates for sub-base layers, offering drainage and stability. Specialty applications include railroad ballast, erosion control, and filtration systems. Lightweight aggregates (e.g., expanded clay) are used in prefabricated panels.
Safety and Storage
Prolonged exposure to silica dust from dry aggregates can cause silicosis. OSHA mandates wet cutting or dust suppression systems on worksites. Storage should avoid contamination by soil or organic matter, which weakens concrete. Bulk aggregates are typically stockpiled outdoors with moisture control. Processed aggregates may require covered storage to maintain consistent grading. Always inspect for debris or clay lumps before use.
B2B Procurement Guide
Key procurement criteria include gradation (meeting ASTM/EN sieve analysis), Los Angeles abrasion value (<40% for highways), and sulfate content (<1% for durability). Regional availability affects costs; maritime aggregates suit coastal projects, while crushed granite is preferred for high-strength applications. Negotiate contracts based on volume (per ton or cubic yard) and delivery frequency. Verify supplier certifications (e.g., ISO 9001) and request material test reports (MTRs) for traceability. Recycled aggregates offer cost savings but require testing for chloride contamination.
Related Manufacturers
- 主营：[]
- 主营：膨胀袋、砌墙石、鹅卵石、砂石料、建筑陶粒、防汛沙袋、二灰碎石、生石灰块、无尘海沙、陶土红砖、多孔水泥砖、水处理滤料、混凝土陶粒、镂空水泥砖、零担快运专线、建筑施工石粉、草坪填充河沙、脱硫剂氧化钙、防洪防汛土工袋、园林透水小石硝、水处理用白灰面
- 主营：[]
- 主营：驳岸石、雨花石、景观石、鹅卵石、黑山石、刻字石、门牌石、观赏石、太湖石、假山石、龟纹石、千层石、天然石
- 主营：石英砂、无烟煤、活性炭、沸石、火山石、增碳剂、堇青石粉、活性白土、硅藻土、高纯石英砂、椰壳活性炭、无烟煤滤料、煅烧高岭土、沸石颗粒、火山石颗粒、工业硅藻土、漂白土、萤石粉、米白圆粒沙、五彩玉石米、五彩玉石、硅酸铝纤维、重钙、轻钙
- 主营：氧化铁颜料、沸石粉、铁砂、电气石粉、氧化铁棕、除渣剂、橡胶粉、氧化铁灰、四氧化三铁、高岭土、玻璃粉、磁粉、氧化铁黑、滑石粉、减水剂、碳酸钙、萤石粉、红色颜料、氧化铁黄、硅微粉、耐火材料、氧化铁红、伊利石粉、氟化钙粉、贝壳粉
- 主营：旋振筛、超声波振动筛、直线振动筛、砂石骨料筛、真空上料机、脱水筛、振动电机、无尘投料站、自动排渣过滤机
- 主营：透水混凝土、帕米孔海绵艺术路面、胶粘石透水混凝土地坪施工、露骨料透水混凝土、帕米孔彩色骨料海绵艺术路面、露骨料透水混凝土地坪施工、帕米孔天然彩色骨料荧光石海绵艺艺术路面、透水混凝土施工、生态素土、高强砂基现浇透水路面、彩色透水混凝土施工、透水地坪专业施工、彩色透水地坪包工包料、海绵城市施工、透水地坪包工包料、透水地坪施工、专业地坪施工、生态透水道路施工、透水混凝土施工队、帕米孔透水混凝土、水洗石、帕米孔天然石洗出石海绵艺术路面、砂基透水地坪
- 主营：磁粉、铁粉、硅灰粉、天然彩砂、染色彩沙、金玉明沙、天然石子、火山石、竹粉、贝壳彩片、地坪岩片、海泡石纤维、雨花石、石子、营养土
- 主营：混凝土搅拌站、混凝土搅拌机、搅拌站设备、自动砂石骨料配料机械、商混搅拌机、商混搅拌站设备、商混拌合站、干混砂浆设备、预拌砂浆设备、强制式混凝土搅拌机、强制式搅拌机、搅拌设备、石膏砂浆设备、水稳拌合站、稳定土拌合站、级配碎石拌合站、干粉砂浆生产线、水泥拌合站设备、干粉砂浆设备、成套砂浆搅拌机、干粉砂浆搅拌机、商混站设备、砂浆混合设备、商砼站设备、小型罐车、混凝土搅拌设备
- 主营：立轴式复合破碎机、颚式破碎机、锤式破碎机、石子骨料筛分机、反击式破碎机、对辊破碎机、球磨机、湿式铜米分离机、螺旋洗沙筛沙一体、脱水筛、螺旋洗沙机、轮斗洗沙机、槽式洗矿机、滚筒筛、振动筛、水力旋流器、脱泥斗、螺旋输送机、6s摇床、跳汰机、螺旋溜槽、渣浆泵、水套式离心机、浮选机、磁选机、除铁器
- 主营：破碎机、制砂机、移动破碎机、砂石骨料处理设备、磨粉机、超细磨粉机、高压磨粉机、雷蒙磨磨粉机、冲击式制砂机、反击式破碎机、鄂式破碎机、冲击式破碎机、单缸液压圆锥破碎机、复合圆锥破碎机、多缸圆锥破碎机、履带移动破碎机、洗沙机、振动筛、轮胎式移动破碎站、机制砂生产线设备、破碎设备、制砂机设备
- 主营：破碎机、制砂机、滚筒筛、建筑骨料破碎机、振动筛、球磨机、输送机、离心机、洗石机、撕碎机、跳汰机
- 主营：移动式配煤机、固定式配煤机、电脑配煤机、砂石分离机、智能混煤系统、自动化配煤设备、搅拌站零排放系统、废气处理设备、布袋除尘器、喷漆废气处理、光解净化设备、喷漆净化设备
- 主营：滑石粉、白陶土、碳酸钙、金刚砂、石英砂、白云石砂、耐火材料、地坪材料、彩色地坪料、高尔夫球场、耐磨地坪硬化剂
- 主营：球磨机、回转窑、选矿生产线、砂石骨料制砂机、移动破碎机、破碎机、烘干机
- 主营：云母粉、蛭石粉、膨润土、砂石骨料、硅藻土、电气石、云母片、麦饭石、石英砂、重晶石、sio2焊条、发热铁砂、耐火漂珠、煅烧沸石、防火涂料、膨胀蛭石、空心漂珠、涂料彩砂、生蛭石片、白色蛭石、实木木粉、染色彩砂、火山熔岩、晶体电介质、滤料鹅卵石、生物质燃料
- 主营：水洗石、水磨石、砾石、鹅卵石、黑山石、雨花石
- 主营：玻璃石、彩石颗粒、彩色石子、天然砂石、水洗石子、天然岩片、天然彩砂、水族装饰底砂、透光玻璃石