Provided here are hemp-based concrete compositions and methods of production of these compositions. These compositions contain an aggregate containing coarse hemp hurd and an alkali-activated binder including a hemp powder derived from a woody core of a hemp plant.

Provided here are hemp-based concrete compositions and methods of production of these compositions. These compositions contain an aggregate containing coarse hemp hurd and an alkali-activated binder including a hemp powder derived from a woody core of a hemp plant.

A mortar composition, which includes (i) a treated palm oil fuel ash, wherein the treated palm oil fuel ash is the only binder present, (ii) a fine aggregate, (iii) an alkali activator containing an aqueous solution of sodium hydroxide and sodium silicate, and (iv) aluminum hydroxide as a strength enhancer. A cured mortar made from the mortar composition is also disclosed with advantageous compressive strength properties.

A mortar composition, which includes (i) a treated palm oil fuel ash, wherein the treated palm oil fuel ash is the only binder present, (ii) a fine aggregate, (iii) an alkali activator containing an aqueous solution of sodium hydroxide and sodium silicate, and (iv) aluminum hydroxide as a strength enhancer. A cured mortar made from the mortar composition is also disclosed with advantageous compressive strength properties.

The present invention is a method for producing a powder dispersant composition for hydraulic compositions including, drying a mixture containing a copolymer having constituent unit (1) represented by the following formula (1) and constituent unit (2) represented by the following formula (2) and water to produce a powder containing the copolymer, wherein: when the copolymer is a copolymer whose n in constituent unit (2) is less than 40, the mixture is dried by a thin film drying method or a spray drying method with a pH of 11 or more and 14 or less; when the copolymer is a copolymer whose n in constituent unit (2) is 40 or more and less than 80, the mixture is dried by a thin film drying method or a spray drying method with a pH of 9 or more and 14 or less; and when the copolymer is a copolymer whose n in constituent unit (2) is 80 or more, the mixture is dried by a thin film drying method or a spray drying method with a pH of 7 or more and 14 or less,

##STR00001## wherein R.sup.1 and R.sup.3 are the same or different and individually represent a hydrogen atom or a methyl group; R.sup.2 and R.sup.4 are the same or different and individually represent a hydrogen atom or an alkyl group with 1 or more and 3 or less carbons; M represents a hydrogen atom, an alkali metal, an alkaline-earth metal, ammonium or an organic ammonium; p represents a number of 0 or more and 2 or less; q represents a number of 0 or 1; and n represents an average number of added moles and a number of 5 or more and 150 or less.

The present invention is a method for producing a powder dispersant composition for hydraulic compositions including, drying a mixture containing a copolymer having constituent unit (1) represented by the following formula (1) and constituent unit (2) represented by the following formula (2) and water to produce a powder containing the copolymer, wherein: when the copolymer is a copolymer whose n in constituent unit (2) is less than 40, the mixture is dried by a thin film drying method or a spray drying method with a pH of 11 or more and 14 or less; when the copolymer is a copolymer whose n in constituent unit (2) is 40 or more and less than 80, the mixture is dried by a thin film drying method or a spray drying method with a pH of 9 or more and 14 or less; and when the copolymer is a copolymer whose n in constituent unit (2) is 80 or more, the mixture is dried by a thin film drying method or a spray drying method with a pH of 7 or more and 14 or less,

##STR00001## wherein R.sup.1 and R.sup.3 are the same or different and individually represent a hydrogen atom or a methyl group; R.sup.2 and R.sup.4 are the same or different and individually represent a hydrogen atom or an alkyl group with 1 or more and 3 or less carbons; M represents a hydrogen atom, an alkali metal, an alkaline-earth metal, ammonium or an organic ammonium; p represents a number of 0 or more and 2 or less; q represents a number of 0 or 1; and n represents an average number of added moles and a number of 5 or more and 150 or less.

This geopolymer molding production method comprises: a mixing step (S1) for mixing a first material containing aluminum and silicon with a hydrate of an alkali stimulant containing a hydrate of an alkaline hydroxide and/or a hydrate of an alkaline silicate; a compaction step (S2) for compacting the mixture obtained in the mixing step (S1) into a compacted mixture; and a curing step (S3) for curing the compacted mixture.

This geopolymer molding production method comprises: a mixing step (S1) for mixing a first material containing aluminum and silicon with a hydrate of an alkali stimulant containing a hydrate of an alkaline hydroxide and/or a hydrate of an alkaline silicate; a compaction step (S2) for compacting the mixture obtained in the mixing step (S1) into a compacted mixture; and a curing step (S3) for curing the compacted mixture.

The present invention relates to a bituminous composition comprising a mixture: a bitumen base, which represents at least 50% by weight, and preferably at least 80% by weight, and preferentially at least 90% by weight, of the total weight of the composition, and a hydroxide XOH with X=Na or K, which represents from 0.001 to 1% by weight of the total weight of the composition,
said bitumen base having an intrinsic stability S from 1 to 2.5 and/or a peptisation level Sa from 0 to 0.6, said values S and Sa being measured according to standard ASTM D 7157-12,
as well as the method of preparation and uses thereof, particularly in the field of road construction.

The present invention relates to a bituminous composition comprising a mixture: a bitumen base, which represents at least 50% by weight, and preferably at least 80% by weight, and preferentially at least 90% by weight, of the total weight of the composition, and a hydroxide XOH with X=Na or K, which represents from 0.001 to 1% by weight of the total weight of the composition,
said bitumen base having an intrinsic stability S from 1 to 2.5 and/or a peptisation level Sa from 0 to 0.6, said values S and Sa being measured according to standard ASTM D 7157-12,
as well as the method of preparation and uses thereof, particularly in the field of road construction.