Overview
Crushed granite is a granular material derived from crushing solid granite bedrock. Unlike decomposed granite (a weathered form), it retains higher structural integrity due to minimal organic content. Its angular edges interlock tightly, making it ideal for load-bearing applications like road bases and patio foundations. The material’s natural coloration—ranging from muted grays to vibrant reds—adds aesthetic value to hardscaping projects. Granite’s geological stability ensures resistance to erosion and temperature fluctuations, suiting long-term outdoor use. It is often preferred over limestone or sandstone for its lower water absorption rate, reducing freeze-thaw damage in colder climates.
Physical and Chemical Properties
Crushed granite primarily consists of quartz (60–70%), feldspar (10–20%), and mica (5–10%), contributing to its hardness (6–7 on Mohs scale) and durability. Its density ranges from 2.65–2.75 g/cm³, providing substantial weight for stability in construction. The material’s permeability (10^-5–10^-6 cm/s) allows effective drainage, preventing water pooling. Chemically inert, it resists acid rain and soil alkalinity, maintaining structural integrity over decades. However, fine dust generated during cutting or crushing may pose silicosis risks, necessitating wet processing or dust suppression measures in industrial settings.
Main Applications
In construction, crushed granite serves as a base layer for roads, driveways, and railway ballast due to its load-bearing capacity. Landscapers use it for pathways, xeriscaping, and decorative mulch, where its permeability reduces runoff. Smaller grades (e.g., 1/4") are popular for resin-bound surfaces, while larger aggregates (3/8"–1") stabilize erosion-prone slopes. The material also features in concrete production as a coarse aggregate, enhancing compressive strength. Eco-conscious projects favor it for sustainable drainage systems (SuDS), as its voids facilitate groundwater recharge without synthetic liners.
Safety and Storage
Handle crushed granite with gloves and dust masks to avoid skin irritation and respiratory issues from silica particles. OSHA mandates exposure limits (50 μg/m³ over 8 hours) for airborne crystalline silica. Storage should avoid prolonged moisture exposure, which may promote bacterial growth in organic-contaminated batches. For large-scale stockpiling, cover with tarps or use enclosed bins to prevent wind dispersal. First aid for eye contact involves flushing with water for 15 minutes; seek medical help if irritation persists.
B2B Procurement Guide
Specify particle size distribution (e.g., ASTM D448 standards) and test reports for abrasion resistance (Los Angeles test) when ordering. Opt for suppliers near quarries to reduce transport costs, which can constitute 30–50% of total expenses. Bulk purchases (20+ tons) typically secure discounts of 10–15%. Verify color consistency through samples, as variations occur between quarry seams. For eco-certified projects, request documentation on low-radiation levels (≤1 mSv/yr) and responsible mining practices like water recycling during extraction.
Related Manufacturers
- 主营：天然文化石、人造文化石、文化石、散石片、黄木纹碎拼、虎皮石、砌墙石、垒墙石、片石、外墙文化石、青石板碎拼、页岩石、灰色文化石、流水石、薄石片、黄色文化石、山岩石、绿色文化石、碎拼石、山皮石、铺地石、黄木纹石材、青石板石材、蘑菇石
- 主营：芝麻灰散石、文化石、虎皮黄石材、绿石英文化石
- 主营：散石锯、液压劈石机、锯石机、液压斩石机
- 主营：水泥盖板、水泥制品、电缆沟盖板、仿花岗岩路缘石供货商、水泥承插管、电缆井盖板、水泥排水管、水泥检查井、装配式检查井、钢筋砼检查井、钢筋砼排水管、钢筋混凝土排水管、钢筋混凝土盖板
- 主营：芝麻黑、芝麻灰、芝麻白、花岗岩、黄金麻、路沿石、幻彩麻、导水槽、青石板、PC仿石砖
- 主营：花岗岩、石英砖、地铺石
- 主营：砌块砖、陶瓷砖、沟盖板、花岗岩、饰面砖、路沿石、圆形井盖、水泥模块、水泥盖板、圆形井室、水泥井盖、电缆盖板、污水井盖、水泥排水槽、模块检查井、检查井砌块、弧形检查井、污水检查井、混凝土井壁、水泥护坡砖、水泥检查井、检查井盖板、混凝土井室、矩形检查井、混凝土模块、水泥钢纤维
- 主营：大理石火烧板、挡车球、挡车柱、花岗岩火烧面、门牌石、异型石材、五莲花、芝麻黑、芝麻灰、黄锈石
- 主营：火山石、火山石板材、石英砂、花岗岩、水洗石、鹅卵石、火山岩石板、五彩石、雨花石、景观石、胶粘石、洗米石、河卵石、白石子、火山岩、地坪骨料、火山岩板材、人造沙滩、装饰板材、鱼缸过滤、河堤铺设、园艺装饰、白色鹅卵石、装饰盆景、小石子、河滩石
- 主营：地铺石、连纹瓷砖、岩板瓷砖、花岗岩、卫生间墙砖
- 主营：仿花岗岩路沿石、八字砖
- 主营：青石板、青石、山东青石、花岗岩、石栏板、石栏杆、青石石材、青石板材、路沿石、山东青石板、青石砖、青石地砖、雕刻栏杆、石材护栏、青石墙砖、青石条石
- 主营：排水沟、水型槽、外墙砖、仿花岗岩、植草砖、水磨石、路沿石、波纹管、透水砖、渗水砖、面包砖、隐形井盖、水泥花砖、水泥井盖、树脂井盖、铸铁溢流井、生态地铺石、球墨铸铁井盖、混凝土检查井、仿古铺地青砖、混凝土路牙石、河道六角护坡砖
- 主营：植草砖、路边石、透水砖、仿花岗岩、哈尔滨步道板厂、草坪砖厂、pc仿石砖厂、仿石砖、pc砖、路面砖、盲道砖、荷兰砖、护坡砖、彩砖厂、水泥制品厂、面包砖
- 主营：黄锈石、山东锈石、黄锈石荔枝面、花岗岩石板材、黄锈石火烧面、芝麻白、火烧板、路沿石、芝麻黑、黄锈石外墙
- 主营：透水砖、路沿石、彩色面包砖、花岗岩、户外路面砖、路面砖、植草砖、小区别墅庭院砖、pc仿石砖、护坡砖、盲道砖、路边石、仿石砖、草坪砖、便道砖、面包砖、荷兰砖、生态石、陶瓷pc砖、路牙石、芝麻灰路沿石、广场砖、生态地铺石、庭院地砖、室外庭院砖、景观砖
- 主营：污水井、生态框、四脚隔热砖、花岗岩、五脚隔热砖、方形检查井、楼顶隔热砖、非开挖顶管、阳台隔热板、混凝土检查井、水泥泡沫隔热砖、透水砖、植草砖、电力盖板、仿木栏杆
- 主营：水磨石、仿古砖、pc仿石砖、仿花岗岩路沿石、井字砖、荷兰砖