Structural element and a method for making such elements
阅读：210发布：2023-04-28
专利汇可以提供Structural element and a method for making such elements专利检索，专利查询，专利分析的服务。并且The invention relates to the providing of a novel structural element made by hydrothermal hardening of mixtures of siliceous material, lime or cement as binding agent, water and a solidifying or addition agent consisting of barium carbonate to form a compound of barium sulfate with water-soluble sulfates which be included as impurities within said siliceous material.，下面是Structural element and a method for making such elements专利的具体信息内容。
1. IN A METHOD OF MAKING STRUCTURAL ELEMENTS BY HARDENING A MIXTURE OF FILLING MATERIAL, A BINDING AGENT, AND WATER WHEREIN THE HARDENING IS CARRIED OUT IN A CONVENTIONAL MANNER IN AN AUTOCLAVE BY STEAM UNDER PRESSURE IN AXCESS OF ATMOSPHERIC PRESSURE AND AT A TEMPERATURE ABOVE 100*C, THE ADDITION OF AT LEAST ONE SOLIDIFYING AUXILIARY AGENT TO THE MIXTURE IN THE FORM OF CHEMICALLY GENERATED CORBONATE-PRODUCTS WHICH ARE INSOLUBLE OR DIFFICULTY SOLUBLE IN WATER AND WHICH AT LEAST INCLUDES BARIUM CARBONATE, THE IMPROVEMENT OF FREEZERPROOFNESS AND HIGH WET COMPRESSIVE STRENGHT COMPRISING THE ADDITION OF SAID BARIUM CARBONATE IN AN AMOUNT NECESSARY FOR CONVERSION OF ALL WATER-SOLUBLE SLFATES OF THE MIXTURE INTO WATER INSLOUBLE SULFATES, WHEREIN THE STOICHIOMETRIC EXCESS OF BARIUM CARBONATE IS 0.5 TO 2.0 PERCENT BY WEIGHT OF THE DRY FILLING MATERIAL AND AT LEAST IS 10 PERCENT THE WEIGHT OF THE AVERAGE OF WATER SOLUBLE SULFATES INCLUDED IN SAID MIXTURE.
2. A method in accordance with claim 1 wherein sAid stoichiometric excess of barium carbonate is substantially 1.25 percent by weight of the dry filling material and substantially 2.5 times the weight of the average of water soluble sulfates included in said mixture.
3. A method in accordance with claim 1 wherein the amount of barium carbonate is at least 1.5 percent by weight of the dry filling material.
4. A method in accordance with claim 1 wherein said chemically generated carbonate-products include calcium carbonate in an amount that is more than 1.0 percent by weight of the dry filling material.
5. A method in accordance with claim 4 wherein the amount of said calcium carbonate is 3.0 to 5.0 percent by weight of the dry filling material.
6. A method in accordance with claim 1 wherein the chemically generated carbonate added includes at least calcium carbonate in an amount greater than 1.0 percent by weight of the total dry filling material in addition to the stoichiometric amount of barium carbonate.
7. A method in accordance with claim 6 wherein the calcium carbonate added is in an amount that is 3.0 to 5.0 percent by weight of the total dry filling material in addition to the stoichiometric amount of barium carbonate.
8. A method in accordance with claim 1 wherein said filling material is siliceous sands from natural sources.
9. A method in accordance with claim 8 wherein said siliceous materials are substantially free from water soluble sulfates.
10. A method in accordance with claim 1 wherein the auxiliary agent consists of naturally occurring carbonate material.
11. A method in accordance with claim 10 wherein the auxiliary agent includes natural calcium carbonate raw materials.
12. A method in accordance with claim 10 wherein the auxiliary agent includes natural calcium-carbonate/magnesium-carbonate raw materials.
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