GSB Material, also known as Granular Sub-Base Material, is a type of construction material used in road and pavement construction in India. It is a blend of granular aggregates, such as crushed stone or gravel, sand and fines. GSB Material is used as a layer above the foundation to provide stability and strength to the road surface.
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The document discusses highway engineering and presents information on granular sub-base layers. It explains that granular sub-base layers are laid between the subgrade and pavement to serve as an effective drainage layer and distribute wheel loads. Crushers are used to reduce stone and rock to smaller uniform aggregates. Compaction of the ...
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SSR Associates - Offering Gsb Granular Sub Base For Roadworks at Rs 850/tonne in Chennai, Tamil Nadu. Get Crusher Dust at lowest price | ID: 2853092967597
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7 Sub-Bases 21 7.1 General 21 7.2 Granular (Unbound) Sub-base Layer 21 7.3 Cementitious (Cement Treated) Sub-base (CTSB) Layer 23 8 Bases 24 8.1 Unbound Base Layer 24 8.2 Cementitious Bases (CTB) 25 8.3 Crack Relief Layer 26 8.4 Bitumen Emulsion/ed Bitumen treated Reclaimed Asphalt Pavement (RAP) Base 27 9 Bituminous Layers 27
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The CBR value and resilient modulus of granular sub-base decreased with increased recycled aggregate percentage following a similar trend to recycle concrete aggregate in sub-base layer of pavement (Arshad ). However, the CBR and resilient modulus of the mixes with recycled aggregates were still within the acceptable range for granular sub-base ...
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The sub-base layer is often the main load-bearing layer of a pavement. It is designed to evenly spread the load of the paving, and any traffic thereon, to the sub-grade below. A well-constructed sub-base will aid drainage and prevent settlement and channelisation - the phenomenon common on cheap installations of block paving, where two 'ruts' develop in the paving.
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The largest size of crane used for GSB is approx 65 mm.in recent type of construction engineers would like to use the crushed stone because it having a particular call centre job and specific range is this can ensure about the good quality. a granular sub base is used as a layer and compacted because of controlling moisture. granular sub base ...
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There are variations such as 100mm crusher run and 75mm crusher run, but these are regarded as too chunky for sub-base formation and are used as fill or as capping layers in larger civils works. The same caveats apply as given above for 40mm scalpings: lack of any proper grading; a tendency to higher levels of fines; and the consequent reduced ...
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Sub-base, Road-base & Wet Mix Material. Subbase 0 – 42 mm & 0 – 50 mm; Roadbase 0 – 42 mm & 0 – 50 mm; Wet Mix 0 – 42 mm; Test Result for Sub-base, Road-base & Wet Mix Material; Capillary Breaker & Pervious Backfill. Capillary 20 – 100 mm; Pervious Backfill Type III 10 mm; Pervious Backfill Type IV 0 – 10 mm; Pervious Backfill ...
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1.1 The Function Of Sub Base Course Layers A base course is defined as the layer of material that lies immediately below the wearing course of a pavement, and the sub base is a layer of material between the base and sub grade. Sometimes the material under a rigid pavement is called as sub base.
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Granular sub-base shall consist of furnishing, spreading, and compacting sub-base in accordance with the details shown on drawings and these specifications. Granular sub-base material shall consist of hard, durable natural/screened gravel or crushed stone and shall be free from clay balls or other deleterious substances. اقرأ المزيد
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GRANULAR SUB-BASE AND BASE COURSE 1.0 GENERAL … .1 The finished surface of compacted granular base and sub-base materials … crushing, hauling, … S4215 Base Course Construction This item shall include furnishing all materials, labor, and equipment for …
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Mixes containing 50% and 75% of RAP with fresh granular materials and recycled concrete aggregate were performed to determine the suitability for granular base/sub-base layers of flexible pavements [5]. Experiments were performed on four types of granular material mixed with various proportions of RAP such that 20%, 50%, and 75%.
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The article outlines the scope of work, materials, and construction operations involved in laying and compacting a well-graded sub-base in accordance with specifications. …
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