%{tishi_zhanwei}%
内页PC端
Inner page mobile version

 

Introduction to “Concrete Formwork Block”

　　Land is a non-renewable, scarce natural resource on which human survival depends.

　　At present, China’s per capita arable land area is less than 1.7 mu, falling below the alert threshold set by the United Nations. In 1999, the State Council mandated that coastal cities and other urban areas with scarce land resources prohibit the use of solid clay bricks and, subject to feasible conditions, impose restrictions on the production and use of other clay-based building products. With strong support from the Shanghai Municipal Construction Commission, the Shanghai Housing Design Institute Co., Ltd. conducted research and development on a new type of wall material—concrete formwork block masonry units. The R&D project spanned five years, during which two national patents were granted by the State Patent Office and the company was awarded the Third Prize for Scientific and Technological Progress by the Shanghai Municipal People’s Government. Following application in more than ten pilot projects totaling 110,000 square meters of construction, significant achievements were made in materials, design, construction techniques, and quality inspection, resulting in substantial accumulated experience. The architectural design of the pilot “Huiliyuan” building in Pudong received the Third Prize for Outstanding Structural Design from the Architectural Society of China. The “Code for Architectural Design of Concrete Formwork Block Masonry Units” and the “Code for Construction and Quality Acceptance of Concrete Formwork Block Masonry Projects” were approved by the Shanghai Municipal Construction and Administration Commission as Shanghai municipal engineering construction standards and came into effect throughout the city on December 1, 2004. Furthermore, the two sets of drawings—the “Architectural Detail Drawings for External Thermal Insulation Energy-Saving Systems Using Concrete Formwork Block Masonry” and the “Structural Detail Drawings for Concrete Formwork Block Masonry”—were approved by the Shanghai Municipal Construction and Transportation Commission and have been implemented citywide since March 1, 2006. Concrete formwork block masonry units are a novel wall material featuring a unique geometric configuration. Each unit is equipped with tenons on all four sides—top, bottom, left, and right—and during masonry, no mortar is required; instead, the blocks are joined by male-and-female tenon interlocking, ensuring tight engagement between adjacent units in all directions and creating an effective interlock. At the same time, all vertical holes and horizontal grooves are filled with grouting slurry prepared in advance according to specified mix proportions, consisting of cement, fine aggregates (such as coal slag and crushed stone), mineral admixtures (including fly ash and ground granulated blast-furnace slag), chemical admixtures, and water. Due to this distinctive structural design, the product exhibits high strength, excellent technical performance, rational stress distribution, and light weight, making it an outstanding load-bearing masonry material. Moreover, it utilizes industrial waste materials and requires no firing, thereby aligning with national industrial development policies. The most significant difference between concrete formwork block masonry units and conventional small masonry units lies in:

　　① The compressive and shear strengths of modular masonry are not only significantly superior to those of small masonry units, but also superior to those of solid clay bricks and porous clay bricks.

　　② Its construction is simple, masonry and stacking are rapid, which helps ensure masonry quality and accelerates the construction schedule;

　　③ Improving work efficiency, reducing overall costs and labor intensity, and thereby enhancing economic benefits;

　　④ Excellent overall integrity and ease of multiple renovations; moreover, the use of self-insulating masonry blocks further enhances building energy efficiency, benefiting future generations.

　　⑤ Exhibits excellent basic physical and mechanical properties, meeting the requirements for wall materials. We are a Shanghai-based technology enterprise specializing in architectural design and research, fully recognizing the importance of building energy efficiency. In active response to the municipal government’s call, we are addressing energy-saving measures and technical requirements at the very source of construction projects—design—thereby ushering in a new phase in building energy-efficiency efforts.

 

1

All rights reserved: Shanghai Municipal Institute of Housing Architecture Co., Ltd.Shanghai ICP Filing No. 19041428-1Website Development:China Enterprise Dynamics

Shanghai Municipal Housing Architectural Design Institute Co., Ltd.