(Sumitomo-Mitsui Quick RC Integration Method)
SQRIM is a full precast concrete method that eliminates cast-in-place (CIP) concrete on the building's main structural elements such as the columns, beams, and the beam-column joint core. In SQRIM, the beam and beam-column joint core are fabricated as a single precast element. These elements are vertically installed in the construction site. Grouted mechanical sleeves are used to join the precast elements. To emulate an RC structure, grout is injected into the joints and into the holes to rigidly connect the precast elements. The advantages of SQRIM application are: shorter construction period, high quality precast elements, elimination of formworks and temporary supports, and savings on labor. Since 2003, SQRIM has been applied to 40 building projects in Japan.
(Sumitomo-Mitsui Quick RC Integration Method - Horizontal)
Developed from SQRIM, SQRIM-H is also full precast concrete method that eliminates cast-in-place (CIP) concrete and has the same characteristics and advantages of SQRIM. Grouted mechanical sleeves are also used to connect the precast elements. In SQRIM-H, the beams can be fabricated separately from the beam-column joint core and are simply shaped compared to the SQRIM's single beam and beam-column joint core element. Thus, beams are easily installed by sliding horizontally (indicates the "H") to join with the column. The method can be applied to any building with complicated shape and structural framing. SQRIM-H has been applied to 8 building projects since 2008.
(International - Sumitomo-Mitsui Quick RC Integration Method)
The I-SQRIM is specially intended for the overseas (international) market and was applied for the first time in a petrochemical plant pipe rack in Malaysia. The original design of the pipe rack was conventional precast which still required cast-in-place (CIP) concrete to rigidly connect the precast elements. The original design was changed with the application of SQRIM method. This includes changing the original lap reinforcement to mechanical joint, L-shaped hook anchor reinforcements to mechanical end anchors, and to rigidly connect the precast elements grout injection was applied instead of CIP. Since CIP concrete is also eliminated in I-SQRIM, it achieves the same characteristics and advantages of SQRIM.
Acquisition of International Standard Evaluation Certificate of Mechanical Rebar Joint System for PC Connections
Sumitomo Mitsui Construction Co., Ltd., in collaboration with DEXTRA Manufacturing Co., Ltd., (main office: Bangkok, Thailand) has acquired an international standard evaluation certificate of the mechanical rebar joint system (grout-filled mechanical joint) used specifically for the SQRIM full precast (PC) method. The system is certified by IAPMO UES/IAPMO Uniform Evaluation Service (American evaluation service) in accordance with ICC-ES AC 133 Type 2 joints. As a result, the need for designers to guarantee the performance of mechanical rebar joints is eliminated when used overseas for SQRIM requiring seismic design, this makes its application easier. The system uses materials from international companies with global supply networks. The mechanical joints used are Groutec couplers manufactured by DEXTRA while the grout is MasterFlow 870 SQRIM manufactured by Master Builders Solutions Malaysia.
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