JP2016079058A5

JP2016079058A5 -

Info

Publication number: JP2016079058A5
Application number: JP2014210915A
Authority: JP
Filing date: 2014-10-15
Publication date: 2017-09-28
Anticipated expiration: 2034-10-15

Description

本発明の一態様によれば、
セメントと、
膨張材と、
増粘剤と
を含む水中不分離性コンクリート組成物であって、
前記膨張材のブレーン比表面積が４，０００ｃｍ ^２／ｇ〜７，０００ｃｍ ^２／ｇであり、前記膨張材の配合量が、単位量で１２〜２８ｋｇ／ｍ^３であり、かつ
前記増粘剤の配合量が、単位量で０．８〜３．０ｋｇ／ｍ^３
であることを特徴とする、水中不分離性コンクリート組成物が提供される。 According to one aspect of the invention,
Cement,
An expansion material;
An underwater inseparable concrete composition comprising a thickener,
The expansion material has a Blaine specific surface area of 4,000 cm ² / g to 7,000 cm ² / g , the blending amount of the expansion material is 12 to 28 kg / m ³ in a unit amount, and the viscosity increase The compounding amount of the agent is 0.8 to 3.0 kg / m ^{3 in} unit amount.
An underwater non-separable concrete composition is provided.

Claims

Cement,
An expansion material;
An underwater inseparable concrete composition comprising a thickener,
The expansion material has a Blaine specific surface area of 4,000 cm ² / g to 7,000 cm ² / g , the blending amount of the expansion material is 12 to 28 kg / m ³ in a unit amount, and the viscosity increase The compounding amount of the agent is 0.8 to 3.0 kg / m ^{3 in} unit amount.
An underwater inseparable concrete composition, characterized in that

The underwater non-separable concrete composition according to claim 1, further comprising a dispersant.

The underwater non-separable concrete according to claim 1 or 2, wherein the thickener is one or more thickeners selected from cellulosic thickeners, gum thickeners, and acrylic thickeners. Composition.

Suspension amount is 50 mg / l or less, strength ratio in water and air at 80 days of age after curing is 80% or more, and length change rate at 6 months of age is 800 × 10 ⁻⁶ or less The underwater non-separable concrete composition according to any one of claims 1 to 3, wherein the composition is an underwater inseparable concrete composition.

The underwater inseparable concrete hardening body obtained by hardening the underwater inseparable concrete composition as described in any one of Claims 1-4.