CATeCA Lightweight Concrete (CATe-con) Floatable concrete (SG 0.9) in the water CATeCA Pontoon which continue to float for over 10 years

Usage ① To reinforce of earthquake-resistance on current building [load alleviation on foundation] ・ earthquake-resistant wall ・ expansion of post and beam ② Expansion & extension of bridge floor ③ Any other Light and strong ！ CATeCA Lightweight Concrete (CATe-con) CATeCA

Delivery form ① Mainly mixed by a dual mixer Mixing ready-mixed concrete → Transport → Placement This concrete is artificial lightweight aggregate concrete mixed with alternative aggregate such as conventional Super MESALITE and G-Light that on site by using a simple mixer. ② Mixed by a flat panel mixer or a lightweight portable mixer Mixing pre-mixed concrete on site→ Placement Compressive strength Weight per unit volume Specific gravity 0.9 ・ 1.2 ・ N/mm2 CATeCA CATeCA Lightweight Concrete (CATe-con)

CATeCA Lightweight Concrete properties range Any concrete performance can be designed tailored to user’s requirements, for example, concrete with compressive strength and air-dried specific gravity of 90(ρ0.9 ）, 120(ρ1.2 ） and 140(ρ1.4 ） that can be mixed on site with a flat panel mixer, more lightweight concrete with ρ0.7 by using a dual mixer, and lightweight high-strength concrete with a compressive strength of more than 60 N/mm 2 with ρ Compressive strength N/mm 2 Lightweight Type I Lightweight Type II Lightweight 150 For structures, civil engineering works and ultra-high rise curtain walls(CWs) For Middle-to-high rise CWs Lighter and stronger Commercially-available product ALC Lightweight 80 Lightweight 150HS A Heat-insulating mortar Air-dried specific gravity(kg/l) Properties range accommodating a slab mixer CATeCA Lightweight 100

CATeCA Lightweight Concrete Doc.1 Concrete properties Physicality Floatable lightweight 80 Lightweight 100 High strength Lightweight 150 (Ref) Lightweight Type I Air-dried weight per unit volume （kg/㎥） Strength Design criterion （N/㎟） Compressive strength （N/㎟） Bending strength（N/㎟） Tensile strength（N/㎟） ●Properties of concrete mix for ready-mixed concrete plants that use a dual mixer *Using Super MESALITE coarse aggregate, G-Light fine aggregate Major application: Secondary products: Curtain walls, slope pressure receiving plates Pontoon was constructed with Lightweight 80 in 1999: Placed in a ready-mixed concrete plant → Transported after hardened Freezing and thawing resistance (cycles and relative dynamic elastic modulus) Lightweight 100: More than 95% at 300 cycles Lightweight 150: More than 98% at 300 cycles CATeCA

●“Lightweight 80” used for construction of a pontoon in 1999 CementAdmixtureFine aggregate Coarse aggregate Water-reducing admixture Admixture Early-strength cement Silica fumeG-Light Super MESALITE High-functional air-entrained (AE) Acrylic emulsion W/B (%) Amount of binder (Kg) S/A(%)Flow (cm) Weight per unit volume ×420.9 Strength development of Lightweight 80 CATeCA CATeCA Lightweight Concrete Doc days7days14days28days Material age (days) Compressive strength N/mm 2 Early-strength Blast furnace

●Durability of pontoon constructed using “Lightweight 80” An ultra-lightweight concrete pontoon (a floating bridge) used for anchoring ships at Shimabara Port, Nagasaki (1999) 3 meters wide, 12 meters long and 1.2 meters high High durability and weather resistance has been maintained for more than 10 years causing few cracks and water ingress (2010) CATeCA CATeCA Lightweight Concrete Doc.3

●Lightweight concrete used for renovation of sidewalk in Chuo-bashi, Fujiyoshida City (in July 2009) DeliveryMixed by a dual mixer at a ready-mixed concrete plant → Transported for 20 minutes → Placed after 40 minutes Target 46 N/mm 2, bending strength >46 kg/cm 2 Resultρ1.56, compressive strength: 68.3 N/mm 2, bending strength: 65 kg/cm 2 (material age: 28 days) AgitatabilityChecked by using a small slope mixer Just after agitation ρ1.48 Flow 60×55 cm Agitated ready-mixed concrete 15 minutes after shipment Weight per unit volume: Measured flow, instead of slump: 50×47cm Slump became less than 10 cm about 45 minutes after shipment A test sample taken about 45 minutes after shipment Air-dried specific gravity: ρ ＝ 1.59 (material age: 1 day)CATeCA CATeCA Lightweight Concrete Doc.4

Lightweight concrete used for renovation of sidewalk in Chuo-bashi, Fujiyoshida City (in July 2009) Concrete transported from a concrete mixer by an unicycle was placed. Finishing work of hardened concrete about 50 minutes after concrete shipment. Fabrication of 20-cm length, 10-cm OD cylinders About 45 minutes after concrete shipment Compressive strength of test sample 34.6 N/mm 2 (material age: 1 day) 68.3 N/mm2 (material age:28days) Construction CATeCA

Lightweight concrete used for renovation of sidewalk in Chuo-bashi, Fujiyoshida City (in July 2009) Compressive strength: （ ） /3=68.3 Nmm 2 The measured value in the picture below is 71 N/mm 2. It is considered that measured values varied depending on the maximum strength of mixed materials, not target strength. No explosive fracture occurred because fiber-reinforced concrete was used. Weight per unit volume: ρ=1.56 (A 20-cm length, 10-cm OD cylinder after standard underwater curing) ρ =5.9562÷4= according to the picture below. ρ =1.56, a measured value of a 20-cm length, 10-cm OD cylinder is used in this document. It is expected that ρ will be 1.55 or less after October. Bending strength: 65kg/cm 2 (Standard underwater curing) The effect of fiber reinforcement was shown. Measured value of concrete with a material age of 28 days (measured on August 12, material age of 27 days) CATeCA

Lightweight concrete used for renovation of sidewalk in Chuo-bashi, Fujiyoshida City (in July 2009) Test itemsResults Slump (cm)10.2 Weight per unit volume (kg/l)1.59 Concrete temperature ( ℃ ) 16.0 Chloride content (kg/m 3 )0.022 Mechanical properties Curing methods Material age of test samples (weeks) 1 day Compressive strength (N/mm 2 ) Standard underwater Sealed Air Young modulus (kN/mm 2 ) Standard underwater － －－ Sealed Air －－ Bending strength (N/mm 2 ) Standard underwater Sealed Air Tensile strength (N/mm 2 ) Standard underwater Sealed Air ←Table 1: Example of test results of fresh concrete for comparison ↓ Table 2: Example of strength test results (average of three test samples) CATeCA

Lightweight concrete used for renovation of sidewalk in Chuo-bashi, Fujiyoshida City (in July 2009) Material age of test samples (weeks) Fresh 1 day Average ↓ Table 3: Example of measured values of weight per unit volume ↑ Figure 1: Example of temporal changes of air- dried weight per unit volume (A 20- cm length, 10-cm OD cylinder) CATeCA

●Development of lightweight concrete for road repair works Measured values of weight per unit volume (ρ) and compressive strength N/ ㎟ ρ=1.32 ρ=1.47 ρ=1.48 ρ=1.60 CATeCA CATeCA Lightweight Concrete Doc.5