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1〜14 articles out of 14 articles

pH change of sea water due to immersion of hardened concrete

Port and Airport Research Institute      014-04-04

December, 1975


Hiroshi SEKI,Kazuaki ZEN,Masami ABE,Takao FUJISAWA

This paper discusses the variation of pH and the solution of CaO and SO3 in the sea water, into which the hardened concrete specim...

Relation between seismic coefhicient and ground acceleration for gravity quaywall

Port and Airport Research Institute      014-04-03

December, 1975

Subaqueous Tunnels and Pipelines Laboratory
Setsuo NODA,Tatsuo UWABE,Tadaki CHIBA

According to the present design standard for port and harbor structures, the seismic coefficients corresponding to the severity of...

Determination of consolidation constants for very soft clays

Port and Airport Research Institute      014-04-02

December, 1975


Yasufumi UMEHARA,Kouki ZEN

The conventional oedmeter test based on Terzaghi's one dimensional consolidation theory is not applicable to very soft cla...

Laboratory investigation on the overtopping rate of seawalls by irregular waves

Port and Airport Research Institute      014-04-01

December, 1975

Wave Laboratory
Yoshimi GODA,Yasuharu KISHIRA,Yutaka KAMIYAMA

Series of measurements with irregular waves were undertaken for the overtopping rate of model seawalls of vertical walls (205 case...

Rock Breaking by Microwave Radiation -effects of local heating and thermal fracture-

Port and Airport Research Institute      014-03-05

September, 1975


Taisei KOIWA,Yasuo SHIRATORI,Hidetoshi TAKAHASHI,Shigeru MATSUMOTO

In case of rock breaking by microwave radiation, thermal stress caused by local heating has a great affection. As effects of shape...

Survey of corrosion resistance of corrosion-resistant steel under marine environments

Port and Airport Research Institute      014-03-04

September, 1975


Kazuaki ZEN,Masami ABE

Survey of corrosion resistance of corrosion-resistant steel under marine environments, such as marine atmospheric zone, splash zon...

Deformation of Irregular Waves due to Depth-Controlled Wave Breaking

Port and Airport Research Institute      014-03-03

September, 1975

Wave Laboratory
Yoshimi GODA

The variation of wave heights due to wave breaking, which is an important process of wave transformation during the propagation fr...

Numerical Analysis of Wave Propagation in Harbours of Arbitrary Shape

Port and Airport Research Institute      014-03-02

September, 1975

Breakwaters Laboratory
Katsutoshi TANIMOTO,Koji KUBUNE,Kazuhiko KOMATSU

The present report shows the applicability of our numerical analysis method of wave propagation to the calculation of wave height ...

Influence of the clearance between bed and mouth sucking a solid body

Port and Airport Research Institute      014-03-01

September, 1975


Yoshikuni OKAYAMA,Tokuji YAGI,Yoshihiro SATO,Masaru SAITO

In order to investigate the influence of the clearance between sea bottom and suction mouth for lift of solid body, the room exper...

An Appraisal of Coral Reef Rock as the Base Course Material of Airport Pavements (1st Report)

Port and Airport Research Institute      014-02-05

June, 1975

Runways Laboratory
Katsuhisa SATO,Tsutomu FUKUTE,Toyoaki ASAJIMA,Hideo SHIBUYA

In this paper, the authors continue investigating the applicability of Coral Reef Rock (C・R・R・), which is a sort of limestone prod...

Control of shrinkage Cracking of Concrete Pavements on Pier Slabs

Port and Airport Research Institute      014-02-04

June, 1975

Runways Laboratory
Katsuhisa SATO,Hiraku MORIGUCHI,Toyoaki ASAJIMA,Hideo SHIBUYA

Cracks have often occurred in the conventional concrete pavements (10 cm thickness) on pier slabs. The purpose of this study is to...

A Study on the Function and Mooring Force of Floating Breakwaters with Circular Cross Section

Port and Airport Research Institute      014-02-03

June, 1975

Storm Surge and Tunami Laboratory
Tsutomu KIHARA,Takao KITATANI,Masahiko TODOROKI

The function of tightly anchored floating bodies of circular cross section as a breakwaters, and the tension imposed on the anchor...

Field Investigation of Submarine Sand Banks and Large Sand Waves

Port and Airport Research Institute      014-02-01

June, 1975


Hiroaki OZASA

This is a report of the field investigation on submarine sand banks and large sand waves at the Bisan Strait in the Seto Inland Se...

Numerical Simulation on Tidal Currents and Pollutant Dispersion due to Alternating Direction Implicit Method. -Application to Osaka Bay-

Port and Airport Research Institute      014-01

March, 1975

Marine Diffusion Laboratory
Yasuo KANEKO,Takeshi HORIE,Kazuo MURAKAMI

This paper deals with the numerical investigations on the stability of solution, Coriolis force, bottom friction, dispersion coeff...