Product Overview

MC-Grout Flowable addresses a specific and common challenge in infrastructure and industrial construction in India: how to achieve complete, void-free filling of large cavities and pockets in reinforced concrete structures where the cavity geometry (irregular shape, deep access restriction, or complex reinforcement obstruction) makes compacted or tamped placement of conventional grout impractical and where the cavity size (volumes from 5 litres to several cubic metres) is too large for the precision fine-grain grouting products designed for machine base plate applications. The non-shrink characteristic of MC-Grout Flowable is the critical performance requirement — a conventional cementitious grout (unmodified Portland cement and sand) exhibits 0.3 to 0.8 percent drying shrinkage during curing, which in a 150 mm deep column pocket translates to 0.5 to 1.2 mm of settlement at the top of the grout, creating a gap between the grout and the base of the column that eliminates the intended direct bearing and load transfer; MC-Grout Flowable uses a combination of expansive admixture (typically calcium sulphoaluminate-based or gas-releasing aluminium powder micro-expansion in the plastic phase) to compensate for the subsequent drying shrinkage and produce net zero or slight positive volume change — ensuring the grout remains in tight contact with both the column base and the foundation pocket throughout the curing and service life. In the Indian construction market, the principal applications for MC-Grout Flowable are: precast column pocket foundations in industrial buildings (pockets typically 400 to 500 mm square, 500 to 600 mm deep, volume 80 to 150 litres), precast prestressed beam end bearings on bridge abutment corbels (shallow, wide bearing area, complex access from beam soffit), anchor bolt group setting in heavy machinery foundations (10 to 40 bolt groups in pockets 300 to 600 mm deep), and large honeycombs in bridge substructure elements (pile caps, pier bases) where the void volume exceeds the practical capacity of hand-trowelled repair mortars. Space Arc Engineering supplies MC-Grout Flowable for infrastructure, industrial, and building construction projects in Ghaziabad, Noida, Delhi, and Uttar Pradesh.

Applications

• Precast column pocket foundation grouting in industrial buildings and warehouses — filling the annular gap between precast RCC columns (typically 400 to 500 mm square cross-section) and the cast-in-place column pocket in the foundation (typically 500 to 600 mm square, 500 to 700 mm deep, with 50 to 100 mm gap around the column on all four sides and below the column base) in industrial warehouses, factory buildings, logistics centres, and precast industrial sheds throughout Delhi NCR, Noida Greater Noida Expressway corridor, and Hapur Road industrial areas; the flowable self-levelling consistency of MC-Grout Flowable allows it to be poured by funnel and hose (or directly from a bucket) into the 50 to 100 mm annular gap around the column from the top of the pocket, flowing downwards and around the column base under gravity without any vibration or tamping — critical because the access to the column base at the bottom of a 600 mm deep pocket is impossible for vibrator insertion; the non-shrink performance ensures the column base is in continuous, void-free contact with the grout for the full load transfer area after curing
• Precast prestressed beam end bearing on bridge abutment corbels and pier caps — grouting the bearing surface between precast prestressed concrete bridge beams (PSC T-beams, I-girders, or box beams) and their supporting elastomeric bearing pads on bridge abutment corbels and intermediate pier cap bearings on road and rail bridges in Delhi NCR, Uttar Pradesh highways, and NHAI national highway projects; the bearing surface irregularities between the precast beam soffit and the cast-in-place corbel top surface, combined with the impracticality of vibration in the shallow (50 to 100 mm) bearing pocket, makes flowable non-shrink grout the standard specified material for bearing level correction and contact surface completion; the non-shrink performance is critical because any settlement gap under the bearing pad creates a point load stress concentration that can cause cracking at the beam end
• Anchor bolt group setting in heavy industrial machinery foundations — setting groups of 8 to 40 anchor bolts (M24 to M48 diameter, 300 to 600 mm embedment depth) in pockets pre-formed in concrete machine foundations for heavy equipment installation in industrial facilities, power plants, and manufacturing plants in Ghaziabad, Noida, and Hapur industrial areas; the flowable consistency of MC-Grout Flowable fills the pocket around multiple closely spaced anchor bolts (typically 100 to 200 mm bolt spacing) without manual compaction or vibration, ensuring complete contact between the grout and each bolt shank and the pocket walls; the non-shrink performance ensures no gaps develop between the bolt and grout that would allow bolt loosening or rocking under dynamic machine loads
• Large honeycomb void repair in bridge substructure elements (pile caps, pier bases, and abutment walls) — repair of large honeycomb voids (volume 5 to 200 litres, depth 100 to 400 mm) in bridge pile caps, pier bases, and abutment walls identified during post-construction inspection of national highway bridges, flyovers, and metro viaduct structures in Delhi NCR and Uttar Pradesh; large honeycombs at these depths and volumes are impractical to repair with hand-trowelled repair mortars (which require layered application at maximum 20 to 40 mm per layer with intermediate curing) and require a flowable material that can be poured into the prepared void and flow to fill the full cavity geometry; MC-Grout Flowable is used by gravity pour through a formed entry point at the top of the prepared void, with a small vent hole at the highest point of the void to allow air to escape as the grout fills from the bottom up

Key Advantages

• Zero or slight positive volume change in the plastic phase for void-free contact with structural elements — the non-shrink admixture system in MC-Grout Flowable produces zero or slight (0.0 to 0.5 percent) positive volume change during the plastic phase before final set, compensating for the early drying shrinkage that would otherwise cause settlement and gap formation between the grout and the overlying structural element; this is verified by the standard grout volume change test (ASTM C1090 or equivalent) and is the fundamental performance requirement that distinguishes non-shrink grout from conventional sand-cement grout in structural bearing and pocket-filling applications; zero shrinkage gap is particularly critical under precast column bases and anchor bolt groups where any gap directly compromises the load transfer efficiency and structural integrity of the connection
• Flowable self-levelling consistency for complete filling of deep pockets without vibration or access difficulty — the high-flow consistency of MC-Grout Flowable (flow table spread 240 to 300 mm at working water-to-powder ratio) allows the grout to flow and completely fill deep, narrow pockets, complex pocket geometries with reinforcement obstructions, and bearing cavities with limited access from above without any vibration compaction or mechanical tamping; this eliminates the principal limitation of stiffer consistency repair mortars and conventional concrete in these applications (incomplete filling of the bottom of the pocket) and ensures 100 percent contact area for load transfer; the high flow is achieved by the MC-Bauchemie admixture system without excess water addition (w/c remains controlled for strength and durability), unlike site-workaround of adding excess water to site-batched sand-cement mixes which drastically reduces strength and causes segregation and bleeding