Patent
Method for the production of water-permeable porous concrete
Reads0
Chats0
TLDR
A method for the production of a water-permeable porous concrete comprising the steps of mixing a concrete mixture containing A. GRANULAR MINERAL AGGREGATES OF A UNIFORM GRAIN FRACTION in the RANGE of 3 to 30 mm with a tolerance range of 4 to 15 mm, B. HYDRAULIC CEMENT in the PRESCRIBED AMOUNT ACCORDING to the JOB SPECIFICATIONS, C. WATER in SUCH an AMOUNT that the WATER-CEMENT RATIOAbstract:
A method for the production of a water-permeable porous concrete comprising the steps of mixing a concrete mixture containing A. GRANULAR MINERAL AGGREGATES OF A UNIFORM GRAIN FRACTION IN THE RANGE OF 3 TO 30 MM WITH A TOLERANCE RANGE OF 4 TO 15 MM, B. HYDRAULIC CEMENT IN THE PRESCRIBED AMOUNT ACCORDING TO THE JOB SPECIFICATIONS, C. A MACROMOLECULAR WATER-SOLUBLE COMPOUND IN AN AMOUNT OF FROM 0.05 TO 2 PERCENT BY WEIGHT BASED ON THE CEMENT, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF PLANT GUMS, STARCH PRODUCTS, CELLULOSE ETHERS, AND SYNTHETIC POLYMERS. D. WATER IN SUCH AN AMOUNT THAT THE WATER-CEMENT RATIO IS BETWEEN 0.32 AND 0.48 WHEREBY SAID CONCRETE MIXTURE IS SPRAYABLE, AND PLACING SAID CONCRETE MIXTURE BY SPRAYING, AS WELL AS THE HARDENED CONCRETE MIXTURE.read more
Citations
More filters
Patent
Set retarded cement compositions and methods for well cementing
TL;DR: In this article, set retarded cement compositions for cementing across a zone or zones in a well having enhanced compressive strength and rapid gel strength development after placement are presented. But the authors do not provide any methods of using the set retarder.
Patent
High starch light weight gypsum wallboard
TL;DR: In this paper, gypsum-containing slurries including stucco, naphthalenesulfonate dispersant, and pregelatinized starch are described.
Patent
Composite light weight gypsum wallboard
Qiang Yu,Weixin David Song +1 more
TL;DR: In this article, a lightweight composite gypsum board including a foamed low density set (LDGS) core, a top non-foamed (or reduced foamed) bonding high density layer, and a bottom cover sheet bonded to the FDGS core by the bottom non-fused layer.
Patent
Additive for cementitious compositions
TL;DR: In this paper, an additive for cementitious compositions is provided comprised of a cellulose ether, a starch ether and a polyacrylamide, which improves the workability of the resulting cementitious composition when used as a tile grout or mortar.
Patent
Additive combination for improving the processing properties of water-containing mixtures of building materials
TL;DR: In this article, an additive combination for improving the processing properties of water-containing mixtures of building materials is proposed, which is suitable for all water-filled mixtures, in particular for plasters, mortars and fillers.