US 9,834,476 B2Granted

Concrete composition and process

AssigneeSpace Coatings Inc.

InventorsSean Peishen Feng, Kathleen Marie Rai

Life of this patent

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Abstract

A concrete comprises in relative parts by weight: 100 of Portland cement; 0.25 to 9 of a defoamer; 0.001 to 6 of a surfactant; 0 to 230 of coarse gravel and/or fine gravel and/or shear enhancers; 0 to 85 of sand; 0 to 60 of a particulate pozzolanic or non-pozzolanic material or a mixture thereof having a mean particle size less than 15 micrometers; 0 to 80 of a particulate pozzolanic or non-pozzolanic material or a mixture thereof having a mean particle size between 15 to 88 micrometers; 0.3 to 18 of a water-reducing superplasticizer; 0 to 14 of polyethylene fibers; and 5 to 40 of water. An air mixing process using a tightly sealed mixing tool is used to thoroughly mix the constituents of the concrete before adding the water for curing. By adjusting relative parts in the composition, concretes of high and ultrahigh performance can be achieved efficiently.

Claims8

Dependent claims

A composition comprising in relative parts by weight:

100 parts by weight of Portland cement;
0.25 to 9 parts by weight of a defoamer in either powder or liquid form;
0.001 to 6 parts by weight of a surfactant, said surfactant being different from said defoamer;
10 to 230 parts by weight of at least one or a combination of gravel and shear enhancers, said shear enhancers being selected from a group consisting of polished stones, metal balls and concrete-casted balls;
0 to 85 parts by weight of sand;
0 to 60 parts by weight of a particulate pozzolanic or non-pozzolanic material or a mixture thereof having a mean particle size less than 15 micrometers;
0 to 80 parts by weight of a particulate pozzolanic or non-pozzolanic material or a mixture thereof having a mean particle size in a range between 15 micrometers and 88 micrometers;
0.3 to 18 parts by weight of a water-reducing superplasticizer;
and
0.001 to 14 parts by weight of polyethylene fibers.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 15/206,552Filed 11 Jul 2016 · division
Priority: 14 Aug 2014
Published: US 2016/0046527 A13 Nov 2016
Granted: 5 Dec 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification14 codes

C04B 16/0625
From polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds: polyalkenes, e.g. polyethylene
B01F 23/60
Mixing according to the phases to be mixed, e.g. dispersing or emulsifying: mixing solids with solids
B01F 33/251
Mixers with loose mixing elements, e.g. loose balls in a receptacle: using balls as loose mixing element
B28C 5/003
Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions: methods for…

Family

Application14/459,326Parent of this division · filed 14 Aug 2014
US 2016/0318799 A1Pre-grant publication · published 3 Nov 2016
US 9,428,420 B2Parent of this division
US 2016/0046527 A1Published application
US 9,834,476 B2This patent

From the US filing history. Foreign family members aren’t listed.