专利汇可以提供Method and apparatus for making and placing lightweight concrete专利检索,专利查询,专利分析的服务。并且Immersing a lightweight porous aggregate for concrete in hot water in a container; then pumping cold water into the lower part of the container to displace the hot water so as to immerse the aggregate in cold water without exposure to the atmosphere, thus saturating the aggregate with water. Then removing the aggregate from the cold water and mixing it with cement, sand and water to make concrete, which is then pumped under pressure to a location for placement. An improvement being to provide two aggregate containers, and as the hot water is being displaced from the first container by the rising cold water, directing this hot water into the second container which contains aggregate and then back to the first container for another aggregate batch, thus conserving the hot water. A second embodiment being to immerse the aggregate in a steam atmosphere and then immersing it in cold water to saturate the aggregate which can then be mixed to make concrete and pumped under pressure.,下面是Method and apparatus for making and placing lightweight concrete专利的具体信息内容。
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