A cementitious composition includes a Portland cement and at least one non-Portland hydratable cement selected from the group consisting of calcium sulfoaluminate cement, a calcium aluminosilicate cement, and calcium aluminate cement, wherein the Portland cement has a content of at least 10 percent based on the total weight of the non-Portland hydratable cement powder, wherein the cementitious composition is free of latex bonding agents, and wherein the cementitious composition is bondable to asphalt. The cementitious composition may also include an aggregate in the form of asphalt millings.

A cementitious composition includes a Portland cement and at least one non-Portland hydratable cement selected from the group consisting of calcium sulfoaluminate cement, a calcium aluminosilicate cement, and calcium aluminate cement, wherein the Portland cement has a content of at least 10 percent based on the total weight of the non-Portland hydratable cement powder, wherein the cementitious composition is free of latex bonding agents, and wherein the cementitious composition is bondable to asphalt. The cementitious composition may also include an aggregate in the form of asphalt millings.

A pavement system that avoids the need for traditional contraction joints regardless of dimension of the pavement. The concrete composite pavement, comprises (i) a gap-graded concrete first layer; (ii) a flexural-hardening fiber reinforced mortar second layer, wherein the gap-graded concrete comprises cement, water and coarse aggregate, the flexural-hardening fiber reinforced mortar comprises cement; water, fine aggregate with a maximum particle size; fiber reinforcement comprising of synthetic and/or metal fibers; wherein the total thickness of the composite pavement is selected depending on the required maximum service point load, using the following formula H=(F/100).sup.0.5×100 mm, where H is the total thickness of the composite pavement and F is maximum service point load; wherein the ratio of the thickness of flexural-hardening fiber reinforced mortar second layer to the total thickness of the composite pavement is within the range of 1:5 to 2:5.

A method for treating soil contaminated with hydrocarbons, in particular with polycyclic aromatic hydrocarbons, includes working the soil with, by weight of soil from 0.1 to 12% of activated carbon; and from 0.1 to 10% of hydraulic binder, the total content of activated carbon and of hydraulic binder in particular ranging between 0.5 and 15%.

A packaged additive for preparing a cementitious composition comprises a water-soluble paper container and at least one non-liquid additive packaged within the water-soluble paper container. A kit for preparing a hardenable cementitious composition comprises the packaged additive and a separate packaged base cementitious material. Also disclosed is a method for preparing a hardenable cementitious composition using the packaged additive and separate base cementitious material components of the kit, and a method for repairing a flaw in a cementitious structure using the hardenable cementitious composition prepared with the packaged additive and the separate base cementitious material.

A packaged additive for preparing a cementitious composition comprises a water-soluble paper container and at least one non-liquid additive packaged within the water-soluble paper container. A kit for preparing a hardenable cementitious composition comprises the packaged additive and a separate packaged base cementitious material. Also disclosed is a method for preparing a hardenable cementitious composition using the packaged additive and separate base cementitious material components of the kit, and a method for repairing a flaw in a cementitious structure using the hardenable cementitious composition prepared with the packaged additive and the separate base cementitious material.

An anti-corrosive concrete grouting material for coastal structure connection and a method for preparing the same, belonging to the technical field of anti-corrosion of coastal assembled structure connectors. The grouting material includes the following components: expansible compound cement, slag sand, fly ash (FA), polyvinyl alcohol (PVA) (containing an oxidant and a catalyst), graphene oxide (GO), a water reducer, an adjusting admixture, a defoaming agent, a mineral admixture and water. A shrinkage-free effect of the grouting material is realized through internal curing of GO-PVA hydrogel, micro-expansion of the compound cement and shrinkage reduction effect of the FA; an energy storage effect of a GO-PVA hydrogel micro-capacitor is exerted to avoid formation of a reinforcement corrosion micro-battery in a grouting material sleeve, a reinforcement corrosion self-immune effect is achieved, seawater corrosion resistance of the grouting material is improved by the slag sand, and it has huge economic and environmental protection benefits.

An anti-corrosive concrete grouting material for coastal structure connection and a method for preparing the same, belonging to the technical field of anti-corrosion of coastal assembled structure connectors. The grouting material includes the following components: expansible compound cement, slag sand, fly ash (FA), polyvinyl alcohol (PVA) (containing an oxidant and a catalyst), graphene oxide (GO), a water reducer, an adjusting admixture, a defoaming agent, a mineral admixture and water. A shrinkage-free effect of the grouting material is realized through internal curing of GO-PVA hydrogel, micro-expansion of the compound cement and shrinkage reduction effect of the FA; an energy storage effect of a GO-PVA hydrogel micro-capacitor is exerted to avoid formation of a reinforcement corrosion micro-battery in a grouting material sleeve, a reinforcement corrosion self-immune effect is achieved, seawater corrosion resistance of the grouting material is improved by the slag sand, and it has huge economic and environmental protection benefits.

A method of controlled hydration expansion of a smectite-containing day mineral (SCM) within an aqueous environment in a confined volumetric space, the method comprising the steps of: —introducing an amount of an SCM into said volumetric space via an inlet thereinto, and initiating the hydration expansion of the SCM to release SCM particles into the confined volumetric space, and increase the pressure therein; and —introducing a flow path modification to control said released SCM particles from undergoing a recompression, said modification thereby maintaining the pressure in the volumetric space.

A method of controlled hydration expansion of a smectite-containing day mineral (SCM) within an aqueous environment in a confined volumetric space, the method comprising the steps of: —introducing an amount of an SCM into said volumetric space via an inlet thereinto, and initiating the hydration expansion of the SCM to release SCM particles into the confined volumetric space, and increase the pressure therein; and —introducing a flow path modification to control said released SCM particles from undergoing a recompression, said modification thereby maintaining the pressure in the volumetric space.