Construction & Infrastructure
Industrial mineral solutions — PT Wira Energi Utama, North Sulawesi
Construction & Infrastructure Overview
Indonesia's national infrastructure development program requires large-scale aggregate and construction material supply. Limestone is a versatile material in the construction industry — from road base, crushed stone (1x2 & 2x3), soil stabilization to asphalt filler. PT WEU serves infrastructure projects in Sulawesi, Maluku, and Papua with direct supply from Ratatotok mine via sea routes.
Products Used
Batu giling 1x2 & 2x3 untuk konstruksi umum, base jalan, dan pengurugan
Filler aspal hotmix, campuran beton, dan mineral filler jalan tol
Stabilisasi tanah subgrade, peningkatan CBR tanah lunak untuk fondasi jalan
Role of Limestone / CaCO3 in Construction & Infrastructure
Limestone serves as structural and functional aggregate in various construction applications. As road sub-base, limestone provides good bearing capacity and drainage. In concrete, limestone aggregate improves workability and reduces water-cement ratio. Fine CaCO3 (asphalt filler) increases mix density and road pavement durability.
Technical Requirements
| Parameter | Value / Standard |
|---|---|
| Agregat — Los Angeles Abrasion | < 40% |
| Agregat — Soundness | < 10% |
| Ukuran Agregat Base Course | 5–40 mm (SNI 1732) |
| Filler CaCO3 Aspal | < 0.075 mm (passing No.200) |
| CBR Stabilisasi (Kapur) | > 10% (7-hari curing) |
| Kadar Air Agregat | < 5% |
Process Integration
- 1
Survey & Mix Design
Analisis gradasi agregat dan desain campuran (AC-WC, AC-BC) sesuai spesifikasi Bina Marga.
- 2
Quarrying & Crushing
Batu kapur ditambang dan dihancurkan ke gradasi 0–5, 5–10, 10–20, 20–40mm sesuai spesifikasi.
- 3
Quality Testing
Uji abrasi, berat jenis, penyerapan air, dan gradasi sesuai SNI di lab terakreditasi.
- 4
Pengiriman ke Site
Pengiriman via dump truck (darat) atau tongkang (pesisir) langsung ke stockpile proyek.
- 5
Aplikasi di Lapangan
Hamparan, pemadatan, dan pengujian CBR/Marshall sesuai spesifikasi teknis proyek.
Industry Pain Points
Keterlambatan pasokan agregat menghentikan progress pekerjaan dan menyebabkan denda proyek
Agregat tidak memenuhi gradasi SNI menyebabkan mix design aspal tidak optimal dan reject QC
Biaya pengiriman agregat dari Jawa ke Papua/Maluku sangat tinggi — 30–50% dari harga material
Variasi kadar air >5% antara batch menyebabkan penyesuaian mix design berulang dan pemborosan
Optimize Your Construction & Infrastructure Supply Chain
Consult your specific industrial technical and logistics requirements with PT WEU experts for maximum operational efficiency.
PT WEU Value Proposition
PT WEU provides limestone aggregate per SNI gradation from 5–40mm with accredited laboratory quality control. North Sulawesi location and Bitung/Kotabunan port access enable rapid delivery to infrastructure projects in Eastern Indonesia at competitive logistics costs.
Production Capability
- Crusher Capacity
- 250 TPH
- Monthly Output
- 150,000 MT
- Operations
- 24/7
- IUP OP Area
- 97.05 Ha
Use Case Simulation
Proyek jalan tol Manado–Bitung membutuhkan 50.000 MT aggregat sub-base dan 5.000 MT CaCO3 filler aspal. PT WEU memenuhi kebutuhan ini dalam 4 bulan dengan 7 tongkang (7.500 MT/tongkang) untuk sub-base dan pengiriman truk rutin untuk filler. Penghematan logistik vs supplier luar estimasi Rp 8 miliar vs supply dari Jawa.
FAQ
Apakah agregat PT WEU memenuhi spesifikasi Bina Marga untuk jalan nasional?
Bisakah PT WEU menyediakan CaCO3 filler untuk campuran aspal hotmix (AC-WC)?
Apakah tersedia paket supply yang mencakup agregat dan filler sekaligus?
Bagaimana dengan ketepatan jadwal pengiriman untuk proyek dengan deadline ketat?
Apakah tersedia jasa supervisi QC untuk aplikasi stabilisasi tanah dengan kapur padam?
Related Industrial Exploration
Core Products
Logistics & Export
Business Support
Ready to Scale Your Construction & Infrastructure Operations?
Our technical team is ready to help you select the right mineral specification for your industrial process.
150K MT
/month capacity
250 TPH
Crusher Plant
Export
Ready Port Bitung