Lijun Mao

US Patent:

8486271, Jul 16, 2013

Filed:

Jun 11, 2010

Appl. No.:

12/814377

Inventors:

Huagang Zhang - Rancho Cucamonga CA, US
Lijun Mao - Rancho Cucamonga CA, US
Paul Owen Kramer - Rancho Cucamonga CA, US
Caidian Luo - Alta Loma CA, US
Ryan Matthew Sullivan - Chicago IL, US
John Andrew Joecken - Palm Springs CA, US
Marko Suput - Rancho Cucamonga CA, US

Assignee:

James Hardie Technology Limited - Dublin

International Classification:

C02F 1/42
G21F 9/04
C04B 7/00
C04B 9/12
C04B 28/00
C04B 28/04

US Classification:

210681, 210687, 106713

Abstract:

Described herein is a cementitious article and a method of making using a water-based manufacturing system that incorporates a closed-loop or partially closed loop water recycling system and an alkali removal process. The system, as such is environmentally friendly, saves resources, such as water and other raw materials, and reduces waste disposal. The system further provides for a cementitious article having a low alkali content. Articles prepared by one or more processes described herein have characteristics that include a low apparent density, high strength and high freeze-thaw performance as compared with an article of the same general formulation but made from a comparative manufacturing system that does not include an alkali removal process. Articles described herein are suitable for use as building products, such as siding, the underlayment panel, board, trim, fascia, roofing, decking, and fence.

US Patent:

20210114933, Apr 22, 2021

Filed:

Oct 20, 2020

Appl. No.:

17/075316

Inventors:

- Dublin 2, IE
Huagang ZHANG - Rancho Cucamonga CA, US
Jongmin KEUM - Rancho Cucamonga CA, US
Yongjun CHEN - Rancho Cucamonga CA, US
Yan LI - Rancho Cucamonga CA, US
Weiling PENG - Rancho Cucamonga CA, US
Thinh PHAM - Yucaipa CA, US
Farshad J. MOTAMEDI - Mission Viejo CA, US
Lijun MAO - Rancho Cucamonga CA, US
Thomas MUELLER - Yucaipa CA, US

International Classification:

C04B 28/04
E04C 5/07
C04B 14/06
C04B 14/08
C04B 14/18
C04B 18/24
C04B 22/06

Abstract:

A fiber cement material formulation comprising a cementitious binder, a siliceous material, fiber, alumina trihydrate and a bifunctional low density additive wherein the bifunctional low density additive comprises any one or more of diatomaceous earth, recycled autoclave fiber cement dust or cellulose dust. The fiber cement material formulation optionally further comprises a secondary low density additive which may be perlite. In some embodiments, a fiber cement article manufactured from the fiber cement material formulation comprises a density of approximately 1.1 g/cmor below.