天津加快使用承重砌块替代粘土砖步伐天津市为了加大限制粘土砖生产使用的力度，决定将发展砼承重砌块建筑做为墙改重点，特邀美国专家到天津做砌块建筑设计、施工技术方面科学讲座，以推动天津“三个方位”一起抓步骤的实施。根据目前天津市墙改工作的进展状况，市墙改办... Tianjin Accelerates the Use of Load-bearing Building Blocks to Replace Clay Bricks In order to increase the restrictions on the production and use of clay bricks in Tianjin, Tianjin decided to make development of concrete block-bearing blocks as the key to wall reform. Specially invited American experts to Tianjin to do block building design and construction. Technical lectures on science and technology to promote the implementation of the three steps in Tianjin. According to the progress of the current wall renovation work in Tianjin, the city wall has been changed...