Takafumi Noguchi

Takafumi Noguchi
The University of Tokyo | Todai · Department of Architecture

Dr. Eng.

About

290
Publications
59,783
Reads
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3,378
Citations
Citations since 2017
79 Research Items
2154 Citations
20172018201920202021202220230100200300400
20172018201920202021202220230100200300400
20172018201920202021202220230100200300400
20172018201920202021202220230100200300400
Additional affiliations
June 1988 - present
The University of Tokyo
Position
  • Professor (Full)

Publications

Publications (290)
Article
This paper introduces two early-stage engineering applications inspired by concretion formation, a naturally occurring elemental and molecular concentration process. First, the precipitation of iron oxide from highly acidic wastewater using cement clinker and its applications to channel control were investigated. Blocking of channels by iron oxide...
Article
Full-text available
The study investigates the effects of the particle size distribution (PSD) of aggregates on the properties of calcium carbonate concrete (CCC). Fifteen different types of aggregate PSDs were designed to select the appropriate PSD for CCC, based on the experimental data. Notably, the compressive strength of the CCC depends on the aggregate PSD, fine...
Article
Although lithium nitrate is a commonly used method to mitigate the alkali-silica reaction (ASR) in conventional Portland cement systems, such kind of research has not been conducted on alkali-activated material (AAM) systems. In this study, the mitigation effect of lithium nitrate on the ASR in an AAM system was investigated for the first time. The...
Article
To provide a better understanding of the mechanism of alkali-silica reaction (ASR) in alkali-activated materials (AAMs) system, in this work, the ASR behavior of alkali-activated slag (AAS)/fly ash (AAFA) mortars were investigated, and compared with ordinary Portland cement (OPC) mortars. It is found that although the AAS mortar bars experience the...
Article
The temperature of inflow air through a window is important for the vertical temperature calculation of window spilled flame, which is believed to be the usual fire cause of façade fire. However, the temperature of inflow air differs from a large window height. With an aim to clarify the effects of the inflow air on the vertical temperature of wind...
Article
We developed a hybrid SWP with organic and inorganic heat insulating materials as the core material and verified the performance of fire resistance and mechanics during the development process. By using both inorganic and organic materials together, it exhibits better fire resistance than organic materials alone. In particular, the specifications u...
Article
Full-text available
Many fire disasters have occurred on the thermoplastic expanded polystyrene (EPS) external thermal insulation composite systems (ETICS) installed vertically on the building facade. Thus, it is important to understand the reaction-to-fire performance of EPS ETICS and the effect of sample scale, orientation, and masonry cover in fire tests. In this w...
Article
JohanssonThe cover image is based on the Original Article Development of a New Intermediate-scale Box Test on Sandwich Panel Products Compared with ISO 13784-1 Room Test and EN 13501-1 Classification System by Hideki Yoshioka et al., https://doi.org/10.1002/fam.2984.
Article
Full-text available
Countermeasures against carbon dioxide emissions are a concern in the construction field as well as in society. To solve this problem, a concept for new calcium carbonate concrete is proposed, and this concept is validated experimentally. In the proposed concept, calcium carbonate comprising Ca originating from demolished concrete or other Ca-conta...
Article
In recent years, the increasing global temperature, caused by excessive carbon dioxide emission, has put a significant threat on the earth’s environment. Therefore, the development of fast carbon dioxide sequestration technologies is urgently needed. In this study, a high-temperature carbonation technique has been proposed by using cement-based mat...
Article
With respect to the reaction to fire performance of sandwich panel products, in ISO/TC92/SC1/WG7 “Large and intermediate scale fire test methods,” ISO 13784-1 “Reaction to fire test for sandwich panel building systems—Part 1: Small room test” is specified as a method of test for determining the reaction to fire behavior of sandwich panel building s...
Article
This article presents a large eddy simulation and experimental study of cedar façade behavior exposed to a 900 kW window spilled flame. The experiments used for validation were carried out in the Building Research of Institute of Japan in Tsukuba according to JIS A 1310 method. The compartment fire was modeled by using the modified eddy dissipation...
Article
The ambient condition has a significant effect on the early strength of cement mortar, however, good curing treatment could improve the quality of surface-layer mortar. To further quantifiably study the effect, the temperature (T) and relative humidity (RH) histories in the surface layer of outdoor curing cement mortars were recorded by embedded se...
Article
In this paper we analyzed the change of void distribution and porosity in cement paste during a hydration process. In order to calculate the void distribution change, we used the analysis of the void distribution of cement particles depending on the size distribution and water-cement ratio. As a result, it became clear that, as the hydration reacti...
Article
Full-text available
The expanded polystyrene (EPS) fac¸ade has been widely used to save building energy, but it has also caused many severe facade fire accidents worldwide. Especially for aged buildings, the naturally weathered exterior surface layer can further increase the facade fire risk and the fire spread rate (FSR). In this work, a series of real-scale EPS Exte...
Article
The back cover image is based on the Research Article Experimental study of time‐averaged upward fire propagation speed of expanded polystyrene external thermal insulation composite systems masonery façade by Biao Zhou et al., https://doi.org/10.1002/fam.2923
Article
Full-text available
Based on fib Model Code 2010, a time‐dependent strength prediction model was improved by reconsidering the coefficient s for the cementitious materials with different types of cement and mix proportions. The relationship between s and mineral composition was investigated experimentally. The results indicate that the values of s show an approximatel...
Article
The rapid industrial development and global population growth of the past century have resulted in an exponential increase of resource consumption and thus caused elevated CO2 emissions that, in turn, are held responsible for global warming and associated environmental problems that require urgent solutions. Specifically, increase of cement product...
Article
The Architectural Institute of Japan published the “Japanese Architectural Maintenance Standard (JAMS-RC)” in February 2021. This standard, which consists of fi ve volumes, specifi es the series of actions for the maintenance of existing buildings, including maintenance planning, inspection, investigation and diagnosis, design for repair and rehabi...
Article
The waste carbon dioxide generated in heavy industries usually accompanies by high temperatures and vapor. To fully utilize the high temperature and improve the carbon dioxide sequestration efficiency, this study has tested and evaluated the carbonation performance of cement paste in a broad temperature range from 20 °C to 300 °C. The results indic...
Article
Full-text available
This paper presents an experimental and modeling study on the influence of curing temperature (T) and relative humidity (RH) on the development of early‐age compressive strength of cement mortars. By introducing an RH factor γRH into the age conversion factor of concrete, a modified maturity function was proposed considering both effects of T and R...
Article
Thermoplastic expanded polystyrene (EPS) external thermal insulation composite systems (ETICS) have caused serious results due to the ravages of frequent fire disasters in the world. Fire propagation of EPS ETICS was observed to be fast over exterior building wall, however, very few reports of time‐averaged fire propagation speed (FPS) is available...
Article
Full-text available
This paper presents a critical review of the main research progress and application of Shirasu concretes in Japan recently. As a kind of pyroclastic-flow deposits, Shirasu aggregate was considered as one kind of nonstandard aggregates for modern concrete industries because it usually has a low density and a high-water content rate, also contains a...
Article
Although alkali-activated cement has received worldwide attention due to its lower energy consumption and environmental impact than that of traditional ordinary Portland cement (OPC), high alkalinity activators generally used for activation may cause ASR deterioration and limit its commercial use. This paper reviews the development of knowledge on...
Article
Thermoplastic Expanded Polystyrene (EPS) External Thermal Insulation Composite Systems (ETICS) has caused serious results due to the ravages of frequent fire disasters. The fire propagation over EPS ETICS surface was observed to be very fast. High temperature threatens the safety of exterior building wall. However, vertical temperature distribution...
Article
Full-text available
In this paper, we analyze the corrosion of reinforcements as indices of processes of the super‐long‐term combined deterioration of reinforced concrete building groups with finishing materials, pre‐induced cracks, and maintenance. Specifically, we systemize specifications for finishing materials by permeability, deterioration mechanisms, and demeano...
Article
Full-text available
Volcanic deposits, which are pozzolanically reactive, have long been known to improve the durability of concrete. Nevertheless, it has also been pointed out that the use of a natural pozzolan as a supplementary cementitious material (SCM) can pose problems of low workability and slow strength development. Also, in addition, its composition and phys...
Article
Full-text available
Amorphous metallic fiber has higher tensile strength as well as corrosion and wear resistance than common, crystalline steel fibers. Its utilization as reinforcement improves the crack resistance and flexural and tensile performance of concrete. In the study at hand, the tensile behavior of thin plate amorphous metallic fiber-reinforced cementitiou...
Article
Volcanic glass powder (VGP) is manufactured from pyroclastic flow deposits. This paper reports the effect of BET surface area and replacement ratio of VGP as a supplementary cementitious material on compressive strength. The performance of VGP as a SCM was evaluated by conducting tests on mortar mixture, replacing 0% to 30% by weight of Portland ce...
Article
The correlation between dimensionless temperature and vertical position z were discussed by conducting a series of intermediate‐scale tests performed a 1.35 m (L) × 1.35 m (H) × 1.35 m (W) fire compartment, whose window‐opening size varied from 0.91 m (H) × 0.41 m (W) to 0.91 m (H) × 0.91 m (W) and heat release rate (HRR) differed from 200 to 1000...
Article
Heat transfer at void slab has been unknown in detail. In order to clear the mechanism of that, the fire performance of void slab is evaluated by calculating in this paper. The existing fireproof test report on the void slab indicates that void affect heat transfer for some reasons. In the previous study, the authors made the heat transfer calculat...
Article
Round robin test for repair methods at Hashima was performed by technical committee of Japan Concrete Institute. Reinforced concrete structures in Hashima would be the most extreme deteriorated ones in the world. Hence, round robin test for repair methods would be a good opportunity to consider their conservation of the concrete structures. The rou...
Article
While most volcanic deposits are known to be reactive, volcanic glass powder is defined in JIS A 6209 as “fine powder consisting mainly of silicate glass( volcanic glass) produced from volcanic ejecta by sorting, grading, milling, etc.” When Ito pyroclastic flow deposits in Southern Kyushu are used as the raw material, JIS-compliant mineral admixtu...
Article
The UN 17 Sustainable Development Goals (SDGs) and the 169 targets have been considered in multidisciplinary approaches worldwide. Whereas, several environmental, economic and social development concerns have been covered by the UN 2030 Agenda. The aim of this research is to investigate the complexity of the interactions between building materials...
Article
In this study, the effects of the fiber length, fiber volume fraction, and strain rate on amorphous metallic fiber-reinforced cementitious composites (AFRCCs) were investigated. The experimental results showed that the amorphous metallic fibers with a 30 mm length had excellent bonding performance with the matrix because of the rough fiber surface,...
Article
Full-text available
The significant contribution of Portland cement in the global climate change, and the common durability issues of Portland cement concrete have led to develop geopolymer cement as an alternative to traditional Portland cement for creating a concrete that's more sustainable and durable. The factors that significantly affect the strength and flowabil...
Conference Paper
This paper proposed a new equivalent age function which allowed to calculate the equivalent age at different curing conditions of temperature(T) and relative humidity (RH). Based on the experimental compressive strength of three different size specimens at different curing condition, the proposed relative humidity influence factor is formulated. Th...
Article
In this study, it was aimed to discuss a method to evaluate the reaction-to-fire performance of fire-retardant-treated wood which was used as building facades taking an aging deterioration into consideration. Accelerated weathering test method and the reaction-to-fire performance of fire-retardant treated wood were examined. As a result of the acce...
Article
We have developed an original theory of void fraction for particles with different size distributions, which is derived using a statistical method by applying the fundamental theory given by M. Suzuki. As the void fraction depends on the size distribution function, the use of this original theory enables the calculation of the void fraction of a pa...
Article
Volcanic ejecta comprises crystal mineral and pumice, sometimes weathering clay fraction in their natural condition. By focusing on the differences of physical properties between these components, high purity volcanic glass was manufactured by sorting out particles less than 2.4g/cm³. This research shows the deference between volcanic glass powder...
Article
To allow the practical use of high the cement including ground granulated blast furnace slag (GGBFS) content by weight of 60% to 70%, it is effective to increase the amount of sulfur trioxide (SO3) by adding anhydrous gypsum for the purpose of increasing early age compressive strength, suppressing shrinkage cracking due to autogeneous shrinkage, an...
Article
Corrosion process of reinforcements of RC building group based on super long-term combined deterioration is integrated into the seismic assessment and changes of human and building damage in virtual earthquakes causing one fatality at the new condition are analyzed. The number of fatalities in the group with maintenance and deterioration by the sce...
Article
Full-text available
The reaction of natural pozzolans is caused by volcanic glass composed of amorphous silicate; however, volcanic ejecta also contains crystal mineral, pumice, and sometimes weathered clay fraction in their natural conditions. By focusing on the differences of physical properties between these components, high-purity volcanic glass powder (VGP) was m...
Article
With regard to fire safety for exterior walls of a building, fire-resistance performance is considered according to the current building standard law of Japan. However, fire safety performance is not specifically regulated from the viewpoint of reaction-to-fire performance, such as fire propagation caused by combustible materials or products which...
Article
Historic buildings have significant cultural, scientific and aesthetic value, and show the accomplishments of past eras. Unfortunately, many of wooden historic buildings are destroyed by fire disasters. The reaction-to-fire performance of timber was changed after several hundred years of natural weathering. In this study, the effect of weathering o...
Article
Full-text available
In this paper, cracks of concrete proceeded from corrosion of reinforcements are analyzed as indices of super long-term combined deterioration processes of RC building groups with finishing materials, pre-induced cracks and maintenance. Specifications for finishing materials are systemized by permeability, deterioration mechanism, deterioration spe...
Article
Concrete resistivity in reinforced concrete structures is used as an indicator of durability related to the corrosion risk. This study aims to develop a quantitative analysis method of geometric effects of nearby reinforcement in the electrical resistivity measurement. The A-REM proposed in this study is a mathematical model to enable analysis of n...
Technical Report
When a coarse pore-structured fine aggregate with a large water absorption was used for concr- ete with a water-binder ratio of 0.12, unit water content of 135 kg/m3, and sand-aggregate ratio of 55%, the mobility, strength, and elastic modulus of concrete increased, with the autogenous shrinkage becoming extr- emely low. The authors attributed the...
Article
Full-text available
Using ground granulated blast-furnace slag (GGBS) under different alkaline conditions, we studied the mechanisms and extents of Cr(VI) reduction and sorption and compared them to reactions with Portland cement (PC). We also investigated the effects of mixing PC/GGBS ratios on Cr(VI) dissolution after carbonating the substrates. We observed a comple...
Article
External thermal insulation composite systems (ETICS) consisting of insulation core and decorative surface materials, are quite common in new construction and refurbishment buildings. Expanded polystyrene (EPS) ETICS are widely used. EPS ETICS consist of three distinct layers of varying composition and physical structure. The mass loss rate (MLR) a...
Article
Full-text available
External thermal insulation composite systems (ETICS) are quite common in constructions. However, the combustible insulation core induces serious fire disasters, especially considering thermoplastic expanded polystyrene (EPS) has been widely used as insulation core. Most of EPS ETICS building fire is caused by window spreading fire. The window open...
Article
軍艦島のRC 構造物群は文化財・観光資源として注目されており,今後の保存・補修の可能性を含めた活用方法に関して様々な検討が行われているが,軍艦島における劣化損傷の程度やメカニズムなどについてはまだ明らかになっていない点も多い.そこで本研究では,軍艦島における鉄筋腐食調査および腐食生成物の分析を行い,腐食の進展のメカニズムについて検討した.その結果,軍艦島における鉄筋の腐食は塩化物イオンの侵入が起点となって生じたが,その後の乾湿繰り返しにより腐食が進展したことが分かった.また,腐食が進展する過程で保護性さびが形成し,すでに腐食の進展が抑制されている箇所があることも明らかになった.
Article
Full-text available
“Shirasu” is a whitish sand found in pyroclastic flow deposits that includes a crystal mineral and an amorphous silicate. It has the properties of both a fine aggregate and a mineral admixture owing to its pozzolanic reaction. To utilize Shirasu as industrial resource, separation of the amorphous silicate and the crystal mineral is required. It is...
Article
Heat transfer at void slab under fireproofing performance was unknown in detail. To clear the mechanism of that makes us evaluate the fire performance of void slab by calculating. At the existing fireproof test report about void slab, it indicates that void affect heat transfer for some reason. To reveal the heat transfer mechanism of void slab, au...
Article
Full-text available
In this study, combined deterioration mechanism in reinforced concrete with CO2, flying salt, acid rain is reconstituted by transient reaction-diffusion equation and super long-term deterioration process is analyzed in RCP scenario. This method is confirmed to be consistent with research of the past about carbonation and to be suitable for complex...
Article
Full-text available
The aim of this work is to know clearly the effects of temperature in response to curing condition, hydration heat, and outside weather conditions on the strength development of high-performance concrete. The concrete walls were designed using three different sizes and three different types of concrete. The experiments were conducted under typical...
Article
The purpose of this research is to propose the intermediate-scale method of free-standing box test that could evaluate the fire safety performance of sandwich panel systems. ISO13784-1 (free-standing room corner test) and three types of free-standing box tests were performed. It was found that there is some correlation between ISO13784-1 and free-s...
Article
Current Building Standard Law of Japan estimates fire toxicity of building material in case of fire by gas toxicity test using mice. Because it is an animal test, some problems are identified such as the impossibility of quantitative analysis, and from ethical viewpoints. Gas analysis method is needed as an alternative. In this research, authors re...
Article
This paper aimed to indicate clearly that the physical properties such as dispersibility and filling ability of binder materials had a great effect on the mixing performance of not only cement paste with low water-to-binder ratio but also ultra-high-strength concrete. So, the verification tests were conducted to clarify the influence of constituent...
Article
Volcanic silicate powder(VSP)is manufactured through dry gravity classification and pulverization from Ito-Shirasu, one of the biggest pyroclastic flow deposit, which includes crystal mineral, pumice, etc. in natural condition, and its properties are variable in area. But, basic properties of VSP, chemical composition, mineral composition and parti...
Article
The Architectural Institute of Japan published “Recommendation for Design and Practice of Reinforced Concrete Building with Portland Blast-Furnace Slag Cement or Ground Granulated Blast-Furnace Slag”. This Recommendation newly adds eco friendliness as one of the required performance parameters of buildings (classification by CO2 emissions reduction...
Article
The relationship between compressive strength and cement hydration reaction was investigated to clarify the strength evolution mechanism of ultra-high-strength concrete with silica fume and fly ash. Compressive strength of concrete and pore volume of cement paste were measured. In addition, an index of C-S-H volume was estimated based on XRD/Rietve...
Article
Existing reinforced concrete structures in Gunkan Island began to construct since 1916, it was said to be the oldest class of RC highrise apartment buildings in Japan. In the RC structures, the integrity evaluation of exterior wall finishing materials and analyses of various bricks in the wall were investigated. Most of the buildings had the peelin...
Article
There exists 100-years-old Jyurinkan-Warehouse located in Komagome. This house is a historical hybrid structure consisted from reinforced concrete foundations/walls and timber beams. Condition assessment of the building system was performed with minor/nondestructive manners from the viewpoints of condition of concrete, re-bars and fire damaged timb...